Instruction Manual

ANALYTICAL Standard

Electronic Balances

AS Series

Ohaus Corporation

29 Hanover Road

Florham Park NJ

07932-0900
2

NOTE: THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH

THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF

THE FCC RULES.

THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION

AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED

IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES,

AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED

AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE

HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPERATION OF

THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL

INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.

THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR

RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS SET OUT IN THE

INTERFERENCE-CAUSING EQUIPMENT STANDARD ENTITLED “DIGITAL APPARATUS”, ICES-003 OF THE DEPARTMENT OF COMMUNICATIONS.

CET APPAREIL NUMERIQUE RESPECTE LES LIMITES DE BRUITS

RADIOELECTRIQUES APPLICABLES AUX APPAREILS NUMERIQUES DE

CLASSE A PRESCRITES DANS LA NORME SUR LE MATERIEL BROUILLEUR :

“APPAREILS NUMERIQUES”, NMB-003 EDICTEE PAR LE MINISTRE DES COMMUNICATIONS.

Unauthorized changes or modifications to this equipment are not permitted.
3

TABLE OF CONTENTS

INTRODUCTION .................................................................................................. 5

DESCRIPTION ..................................................................................................... 5

UNPACKING ........................................................................................................ 6

INSTALLATION .................................................................................................... 7

Environment .................................................................................................. 7

Draft Shield and Spill Ring ............................................................................ 7

Pan ................................................................................................................ 8

AC Adapter .................................................................................................... 8

Leveling the Balance ..................................................................................... 8

OPERATION ........................................................................................................ 9

Turning the Balance ON ................................................................................ 9

Warm Up ....................................................................................................... 9

Moveable FineRange TM Model (AS260D) ...................................................... 9

Checking Calibration ................................................................................... 10

Weighing .................................................................................................... 10

Zero/Tare .................................................................................................... 11

USING MENUS TO CONFIGURE THE BALANCE ........................................... 12

CALIBRATION MENU ........................................................................................ 13

Calibration Menu Protection ........................................................................ 13

Calibration Weights ..................................................................................... 13

Span Calibration .......................................................................................... 14

Linearity Calibration .................................................................................... 15

End .............................................................................................................. 16

USER MENU ...................................................................................................... 17

User Menu Protection ................................................................................. 17

Reset to Factory Defaults ............................................................................ 18

Averaging Level .......................................................................................... 19

Stability Range ............................................................................................ 20

Auto-Zero .................................................................................................... 20

 End ............................................................................................................. 21
4

SETUP MENU .................................................................................................... 22

Setup Menu Protection ................................................................................ 22

Type Approved Balance .............................................................................. 23

Lockswitch ................................................................................................... 24

End .............................................................................................................. 25

MENU LOCK-OUT PROTECTION ..................................................................... 26

TYPE APPROVED BALANCE SEALING ........................................................... 27

CARE AND MAINTENANCE .............................................................................. 28

TROUBLESHOOTING ....................................................................................... 28

Error Codes ................................................................................................. 29

SERVICE INFORMATION ................................................................................. 30

SPECIFICATIONS ............................................................................................. 31

PARTS INFORMATION ..................................................................................... 32

REPLACEMENT PARTS ................................................................................... 32

LIMITED WARRANTY ........................................................................................ 33
5

INTRODUCTION

This manual covers installation, operation and troubleshooting for the Ohaus

Analytical Standard balances, Models AS60, AS120, AS200 and AS260D. Type

approved Analytical Standard balances, Models AS60E, AS120E and AS200E are

setup to conform to OIML, EC and U.S. regulations. To insure proper operation of the

balance, please read this manual completely.

DESCRIPTION

Ohaus Analytical Standard series balances are precision weighing instruments,

designed to provide years of service with virtually no maintenance. The Analytical

Standard series is constructed using a die-cast aluminum base finished with a durable

epoxy powder paint which is resistant to commonly used acids, contains a one piece

solid-state precision electronics PC board and a seven digit LCD display which is 0.6

inches in height. All Analytical Standard series electronic balances are factory set to

measure in grams. To prevent measurements from being affected by air currents, a

draft shield is mounted to the balance. A stainless-steel spill ring is removable for

cleaning in the event of accidental spills. Power is supplied through an AC Adapter

which is available in five configurations for world-wide usage. Accessories include: an

RS232 interface kit which allows printing of results through an external computer, an

RS232 interface cable with a print switch, a security device and calibration weights.

ANALYTICAL STANDARD Balance
6

UNPACKING

Your Analytical Standard balance was shipped with the following items:

• a pan

• an AC power adapter

• a draft shield and spill ring

• this instruction manual

• your warranty card

It is recommended to save the carton and packing material for storing, transporting the

balance or returning it for service.

Draft Shield and

Spill Ring

Analytical Standard

Balance

AC Adapter

Pan
7

INSTALLATION

Environment Environment

The balance should always be used in an environment which is free from excessive air

currents, corrosives, vibration, and temperature or humidity extremes. These factors

will affect displayed weight readings.

DO NOT install the balance:

• Next to open windows or doors causing drafts or rapid temperature changes.

• Near air conditioning or heat vents.

• Near vibrating, rotating or reciprocating equipment.

• Near magnetic fields or equipment that generates magnetic fields.

• On an unlevel work surface.

Draft Shield and Spill Ring

To install the draft shield and spill ring:

1. Position the draft shield on top of the

balance as shown (approximately 30

degrees counterclockwise from the

base of the balance).

2. Looking down through the top of the

shield, line up the hole in the bottom

of the shield with the hole in the balance weighing mechanism.

3. Put the draft shield down, fitting the

holes, and turn the shield clockwise

until it locks into place.

4. Make sure that the draft shield is

firmly locked in place.

5. Install the stainless steel spill ring

inside of the draft shield with the

raised surface facing up and correctly oriented.

CAUTION:

Never remove the draft shield with

the pan in place.
8

Pan

Place the pan into the hole in the weighing

mechanism.

AC ADAPTER

RECEPTACLE

PAN

AC Adapter

Plug the molded connector of the AC

Adapter into the receptacle at the rear of

the balance. Plug the AC Adapter into a

convenient ac outlet. When power is applied to the balance, it will begin a 60

second self test cycle. During this time, if

the balance is turned ON, the display will

count down from 60 and display the word

CHEC.

Leveling the Balance

The balance is equipped with a level

indicator on the rear and two adjustable

leveling feet. Adjust the leveling feet

until the bubble appears in the center

circle of the indicator.

SPILL RING

LEVEL INDICATOR

LEVELING FEET (2)
9

 Moveable FineRange Model (AS260D) Model (AS260D)

The AS260D offers both a fine range (lower capacity/higher readability) and a coarse

range (higher capacity/lower readability). When first turned on, the balance is in the fine

range. It remains in this range until the weight on the pan exceeds the fine range

capacity. When weight on the pan is greater than the fine range capacity, the balance

switches to the coarse range.

For balance with Moveable FineRange, please note:

If the weight of the object on the platform exceeds the limit of the Moveable

FineRange, the balance will automatically change to the coarse range until either:

1. The load (excluding tare) is reduced to below the limit of the fine range.

-OR2. is momentarily pressed, which tares the balance and reactivates the fine

range.

OPERATION

Turning the Balance ON

With no load on the pan, switch the balance ON by pressing . When first

switched ON, all segments of the display

should be on as shown in the illustration.

This display check will be displayed briefly,

then the model number of the balance

followed by a software revision number.

Warm Up

Before initally using the balance, allow

time for it to adjust to changes in environment. The balance need only be plugged

in to warm up. Recommended warm up

period is 30 minutes.
10

Checking Calibration

Before using the balance, it should be

calibrated. The balance has been calibrated before shipment, however, calibration is influenced by factors such as:

• Variations in the earths gravitational

field at different latitudes of the world.

• Rough handling.

• Changes in work location.

• Height above sea level.

• Environmental conditions.

To check the balance’s calibration, place

a known mass on the center of the pan and

read the displayed weight.

If the displayed weight differs from the

known mass by more than acceptable

limits, refer to the Calibration Menu and

the Specifications at the rear of the manual.

Weighing

1. Press to zero the display.

2. Place the object(s) or material to be

weighed on the pan.

3. Wait for the stability indicator to appear before reading the weight.

STABILITY

INDICATOR
11

Zero/Tare Zero/Tare 

When weighing material or objects that

must be held in a container, O/T enables

you to store the container weight in the

balance’s memory, separate from the

weight of the material in the container.

1. Place an empty container on the pan.

Its weight will be displayed.

2. Press .

The display will show zero and the

container’s weight will be stored in

memory.

3. Add material to the container. As material is added, its net weight will be

displayed.

4. Removing the container and material

from the pan will cause the balance to

display the container’s weight as a

negative number.

The weight remains in balance memory

until is pressed again.

MODE
12

USER

RESET

Yes, No

AL

0, 1, 2, 3

STB

.5d, 1d, 2d, 5d

AUTO-0

OFF , .5d , 1d, 3d

END

SETUP

LFT

On, Off

 LOCSW

Calibration

User

Setup

Print

End

END

CAL

SPAN

LIN

END

PRINT

USING MENUS TO CONFIGURE THE BALANCE

Analytical Standard balances contain four display menus which enable you to calibrate

and configure the balance for your specific operating requirements.

Calibration Menu: Used to calibrate the balance for span or linearity.

User Menu: Used to adapt the balance to environmental conditions.

Setup Menu: Used to enable or disable different balance features.

Print Menu: Used to configure the RS232 Interface.

Functions not allowed on verified balances have shaded backgrounds.

NOTE:

PRINT menu appears only

when RS232 option is installed.

next selection select

 displayed item

To access a menu, press and hold until desired menu appears, then release it.

Original factory default settings are shown in boldface type.

Use these buttons to step through menus and select submenus:
13

CALIBRATION MENU

Analytical Standard balances can be calibrated in two ways: Span calibration or

Linearity calibration. Span calibration resets the balance’s weighing range using two

weight values: zero and a weight value at or near the balance’s capacity. Linearity

calibration minimizes deviation between actual and displayed weights within the

balance’s weighing range. Three weight values are used: zero, a weight value within

the balances weighing range, and a weight value at or near the balance’s specified

capacity. The following table shows the sequence in which submenus appear on the

Calibration menu.

CALIBRATION MENU TABLE

Selects span calibration.

Selects linearity calibration.

Used to exit the Calibration menu.

Calibration Menu Protection

Calibration may be locked out to prevent

unauthorized personnel from changing

calibration. To lock out calibration menu,

refer to the section titled Menu Lock-Out

Protection.

NOTE: If calibration has been locked out,

you will not be able to access it.

Calibration Masses

Before beginning calibration, make sure

masses are on hand. If you begin calibration and realize masses are not available,

either turn the balance off, or go through

the procedure without masses. The balance will use previously stored calibration

data. Calibration should be performed as

necessary to ensure accurate weighing.

Masses required to perform the procedures are listed in the adjacent table.

CALIBRATION MASSES

LINEARITY SPAN ONLY

MODEL MASSES MASS

AS60 20g, 50g 50g

AS120 50g, 100g 100g

AS260D 100g, 200g 200g

AS200 100g, 200g 200g

Masses must meet or exceed ASTM Class 1

Tolerance. Calibration masses are available as

accessories.
14

Span Calibration

1. Press and hold until CAL is

displayed, then release it. Balance

will display SPAN.

2. Press to start the Span calibration procedure.

3. When is released, C 0g will

be displayed indicating that no weight

should be on the pan.

4. Press . The display will show

-C- momentarily, followed by the value of the weight which must be placed

on the pan. Do not disturb the balance when -C- is displayed. Disturbances will result in improper calibration.

5. Place the required weight on the pan

and press . The display will

show -C- momentarily while the balance recalibrates.

6. When the weight on the pan is displayed along with the current unit

indicator, the balance is recalibrated.
15

Linearity Calibration

1. Press and hold until CAL is

displayed, then release it. Balance

will display SPAN.

2. Press and the display will

show LIN.

3. Press to start the Linearity

Calibration Procedure.

4. When is released, C 0g will be

displayed, indicating that no weight

should be in the pan.

5. Press . The display will show

-C- momentarily, followed by the value of the weight which must be placed

on the pan. Do not disturb the balance when -C- is displayed. Disturbances will result in improper calibration.

6. Place the required weight on the pan.
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End

If you have entered the Calibration menu

and do not wish to calibrate the balance,

use END to return to normal weighing

operations.

Repeately press until End is displayed.

Press , when released, the balance

will returned to normal weighing operations.

7. Press . The display will show

-C- momentarily, then C followed by

the next weight to be placed on the

pan.

8. Place the required weight on the pan,

then press . The display will

show -C- momentarily, while the balance recalibrates.

9. When the weight on the pan is displayed along with the current indicator, the balance is recalibrated.
17

USER MENU

The User menu is used to adapt the balance to environmental conditions. It contains

submenus which enable you to reset the balance to factory default settings or to select

specific range settings. Access to the User menu can be disabled using the Lock out

switch. The following table shows the sequence in which submenus appear on the

User menu.

USER MENU TABLE

Sets all submenus below to original

factory default settings. Reset does not

appear if menu has been locked out.

Specifies the averaging level.

Specifies the desired stability range.

Sets Auto-Zero threshold.

Used to exit the Setup menu and store

your selections.

User Menu Protection

The User menu may be locked out to

prevent unauthorized personnel from

changing the settings. To lock out the

User menu, refer to the section titled Menu

Lock-Out Protection.

NOTE: If -SAFE- is displayed, the User

menu has been locked out. Settings may

be viewed but not changed. See the Menu

Lock-Out Protection section to enable it

for making changes.

To access the User menu, press and hold

 until USER is displayed, then release it.
18

Reset to Factory Defaults

This submenu enables you to reset all

User menu selections to the factory default settings outlined in the adjacent table.

To reset to factory defaults:

1. Access the RESET submenu.

2. Press to change the setting.

3. Select YES to reset settings or,

no to leave current settings.

4. Press to accept the displayed

setting.

To access a submenu:

1. Repeatedly press until the desired submenu is displayed.

2. Press to select the displayed

submenu.

NOTE: You must use END to store any

changes you make to the User menu.

The following sections describe each item

on the User menu in detail.

USER MENU

FACTORY DEFAULTS

Averaging Level AL 1

Stability Range 1d

Auto-Zero Tracking .5d
19

Averaging Level Averaging Level

Averaging level compensates for vibration or excessive air currents. During operation, the balance continually takes

weight readings from the weighing cell.

Successive readings are then digitally processed to achieve a stabilized display.

Use this submenu to specify how much

processing you need to obtain stable results.

NOTE: Averaging level does not affect

balance accuracy.

Select one of four averaging levels using

the adjacent table as a guide.

To view or change the averaging level:

1. Access the AL submenu to display

the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

4. When is released, AL will be

displayed again and the Setup menu

will be returned.

AVERAGING LEVEL

AL 0 reduced stability, fastest

stabilization time

AL 1 normal stability, normal 1 normal stability, normal

stabilization time

AL 2 more stability, slow stabilization time

AL 3 maximum stability, slowest stabilization time
20

Stability Range

The stability range specifies how much a

displayed weight may change while the

stability indicator remains ON. When displayed weight changes beyond the allowable range, the stability indicator turns

OFF indicating an unstable condition.

Analytical Standard balances permit you

to select one of four stability ranges (in

divisions) as shown in the table.

When the RS232 interface is configured

to print stable data only, the stability range

also governs data output. Displayed data

will only be output if it is within the selected

stability range.

To view or change the stability range:

1. Access the Stb submenu to display

the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

4. When is released, Stb will be

displayed again and the Setup menu

will be returned.

STABILITY RANGE

.5d smallest range: stability indicator is ON only when displayed weight is within .5 divisions

1d reduced range

2d normal range

5d largest range: stability indicator is ON even though displayed weight changes

slightly

Auto-Zero

Auto-Zero minimizes the effects of temperature changes and shift on the zero

reading. By defining a threshold level in

divisions, the balance maintains the zero

display until the threshold is exceeded.

This submenu permits you to select one

of three threshold levels, or turn the feature OFF. Auto-Zero only functions when

the display reads zero.
21

To view or change the Auto-Zero setting:

1. Access the Auto-0 submenu to display the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

4. When is released, Auto-0 will

be displayed again and the User menu

will be returned.

End

You must use END to exit the User menu.

Changes you make in the User menu

are only stored in memory if you use

END.

1. To exit the User menu and store your

settings, press when End is

displayed.

2. When is released, the balance

will be returned to normal weighing

operations.

AUTO ZERO

OFF turns Auto-Zero OFF

.5d sets threshold to .5 divisions

1d sets threshold to 1 division

3d sets threshold to 3 divisions
22

Setup Menu Protection

The Setup menu may be locked out to

prevent unauthorized personnel from

changing settings. To lock out the Setup

menu, refer to the section titled Menu

Lock-Out Protection.

NOTE: If -SAFE- is displayed, the Setup

menu has been locked out. Settings may

be viewed but not changed. See the Menu

Lock-Out Protection section to enable it

for making changes.

Sets balance for type approved operation.

Enables individual or all menus to be

locked out.

Used to exit the Setup menu and

store your selections.

SETUP MENU

The Setup menu enables you to retain program balance parameters once they have

been set. Access to the Setup menu can be disabled using the Lock out switch. The

following table shows the sequence in which submenus appear on the Setup menu.

 SETUP MENU TABLE

To access the Setup menu, press and

hold until SETUP is displayed, then

release it.
23

Type Approved Balance

This parameter can be set to ON or OFF.

Selecting ON automatically sets certain

parameters for type approved requirements.

1. Access the LFT submenu.

2. The display will show the current

status (ON/OFF). If ON is selected,

Auto-Zero Tracking will be limited to

0.5d or OFF and Lock switch default

becomes Setup.

3. Press to change the status.

4. Press to accept the status.

5. When is released, the display

will show LFT.

To access a submenu:

1. Repeatedly press until the

desired submenu is displayed.

2. Press to select the displayed

submenu.

NOTE: You must use END to store any

changes you make to the Setup menu.

The following sections describe each item

on the Setup menu in detail.
24

Lockswitch

Lockswitch enables you to lock out one or

more menu selections. Each menu can

be individually locked YES, or unlocked

NO. Set the appropriate balance functions, and then decide which functions of

the balance are to be locked. The Calibration, User, and Setup menus can be

individually locked by selecting YES for

the appropriate menu, and then locked by

the switch located under the right hand

side of the control panel.

1. Access the LOCSW submenu. When

 is released, the LOCSW

submenu is displayed.

2. To access one or more menus, press

 to select the calibration menu,

-CAL- is displayed.

NOTE: Pressing changes the

selection to the other menus.

3. To select a YES or NO, press .

NOTE: The switch acts as a

toggle and can select either YES or

NO.

4. To confirm your selection,

press again. The display indicates the last menu you were in.
25

End

You must use END to exit the Setup

menu. Changes you make in the Setup

menu are only stored in memory if you

use END. use END.

1. To exit the Setup menu and store

your settings, press when END

is displayed.

2. When is released, the balance

will be returned to normal weighing

operations.

5. To lock out the other menus, press

 and repeat the procedure in

steps 3 and 4.
26

Access to the Calibration, User, and Setup

menus, can be disabled using the lock out

switch located under the right side of the

balance, near the display.

1. Turn the display off and unplug the

power cord.

2. Slide the balance toward you, with

the front over the edge of a table.

(You can also turn the balance on its

left side, but if you do, you MUST

remove the pan and spill ring first!)

3. Locate hole under display where

switch is located.

4. Using a small screwdriver, slide the

switch forward for LOCKED or back

for UNLOCKED.

5. Plug in the power cord and turn on

the balance.

LOCK OUT

SWITCH

UNLOCK

LOCK

MENU LOCK-OUT PROTECTION
27

BASE OF BALANCE

LEAD AND WIRE SEAL BRACKET

SECURITY SCREW

TYPE APPROVED BALANCE SEALING

Analytical Standard Balances, Models AS60E, AS120E and AS200E may be sealed

for type approved applications. Factory sealed balances include a bracket, lead seal

and wire and security screw as shown in the figure below.

Type approved balances are Class I devices, consult local Weights and Measures

officials to determine scaling requirements. If the balance needs to be sealed in the

field, a wrench has been provided.

After the balance has been set up properly and the menus are locked out (LFT menu

selection set ON), proceed as follows to seal the balance:

1. Turn OFF and unplug the balance. Remove the Draft Shield, Spill Ring and Pan.

2. Turn the balance over and locate the access hole to the lock out switch.

3. Remove the existing screw next to the access hole and discard.

4. Place the Bracket supplied over the access hole and secure with the Security

Screw supplied. Tighten with the Wrench supplied.

5. Obtain the Lead Seal and wire. Pass the wire through the Security Screw and

the eyelet on the Bracket as shown in the illustration.

6. Crimp the lead seal tightly. Turn the balance over and reinstall items removed.
28

TROUBLESHOOTING

CARE AND MAINTENANCE

To keep the balance operating properly, the housing, spill pan and pan should be kept

clean and free from foreign material. If necessary, a cloth dampened with a mild

detergent may be used. Keep calibration weights in a safe dry place.

REMEDY

Check power adapter

connections.

Press with no weight

on the pan, then weigh item.

Recalibrate correctly.

You MUST use END to exit

menus and save settings.

Verify interface settings in Print

menu correspond to those of

peripheral device.

Check cable connections.

Unplug the power cord, then

replug again. If condition

persists, unit must be serviced.

Set Lock switch to OFF.

Set LFT OFF, in LFT

applications, seal will be

broken. Breaking the seal will

nullify the legal application.

Place balance on a stable

surface or change averaging

level.

See Error Codes Table.

PROBABLE CAUSE(S)

Power adapter not plugged in

or properly connected to

balance.

Balance was not zeroed before

weighing.

Balance not properly calibrated.

END not being used to exit

menus.

Print menu settings not

properly set up.

Cable connections.

Microprocessor lock-up.

Lock switch set ON.

LFT set ON.

Vibration on table

surface.

SYMPTOM

Unit will not turn on.

Incorrect weight reading.

Unable to store menu settings/

changes.

RS232 interface not working

(when installed).

Random segments displayed

or display locks up.

Unable to change settings.

Unstable readings.

Error message display.
29

Error Codes

The following list describes the various error codes and which can appear on the

display and the suggested remedy.

Data Errors

0.0 Transient error (hardware error, probably static discharge). If error persists,

the balance must be serviced.

Zero/Tare Errors

2.0 Balance is unable to stabilize within time limit after zero/taring. Environment is

too hostile or balance needs recalibration.

Calibration Errors

3.0 Incorrect or no calibration weight used for calibration. Recalibrate with correct

weights.

RS232 Errors

4.0 Bad RS232 frame. Check RS232 menu parameters and correct.

4.4 RS232 buffer is full (if installed). May occur if no printer or computer is

connected to the interface. To clear buffer, turn balance off or enter Print menu

and select END.

4.5 Function is disabled by the Lock switch.

User Errors

7.2 Number outside of display capacity.

Over-Under Load Errors

8.0 Hardware error causing an internal weight signal which is too low. Check if pan

or pan support is off. If not, the balance must be serviced.

8.1 Hardware error caused by an internal weight signal which is too high. Check

load on the platform which may be excessive. If error persists, the balance

must be serviced.

8.2 Power-on load out of specification: Balance was turned on with load on pan or

pan off balance. No load may be on pan when turned on and pan must be in

place.

8.3 Rated capacity exceeded. Remove excessive weight from pan.

8.4 Underload condition on balance. Check that the proper pan and pan support

are installed.
30

Error Codes (Cont.) Error Codes (Cont.)

CheckSum Errors

9.0 Bad factory checksum. If error persists, have the balance serviced.

9.5 Bad factory calibration checksum. If error persists, have the balance serviced.

9.6 Bad mode checksum. Turn the balance off using the front panel controls. If

the error persists, have the balance serviced.

9.7 Invalid setup data checksum. Check Setup, User and Print menu (when

RS232 is installed) settings. If possible, try to enter menus and exit using END

to restore menu settings. May be caused by a faulty component, or in rare

cases, a severe static charge. If error persists, balance must be serviced.

9.8 Hardware error causing invalid calibration data checksum. Balance may need

recalibration - particularly linearity calibration. If error persists, balance must be

serviced.

9.9 Invalid temperature compensation checksum. Balance will work with default

temperature compensation data, however, error will occur each time balance

is turned on. Have balance serviced.

SERVICE INFORMATION

If the Troubleshooting section does not resolve or describe your problem, you will

need to contact an authorized Ohaus Service Agent. For Service assistance in the

United States, please call Ohaus Corporation toll-free at (800) 526-0659. An Ohaus

Product Service Specialist will be available to help you.
31

MODEL AS60 AS120 AS260D AS200

Capacity (g) 62 122 62/202 202

Readability (mg) 0.1 0.1 0.1/1 0.1

Weighing mode grams

Repeatabilty (std. dev.) (mg) 0.1 0.1 0.1 0.1

Linearity (mg) + 0.2 + 0.2 + 0.2 + 0.2

Tare range To capacity by subtraction

Stabilization time 4 seconds

Sensitivity Drift (10° to 30°C) 2ppm/ °C

Operating temperature 41° to 104°F/5 ° to 40°C (Non type approved)

64° to 73°F/17.5 ° to 22.5°C (Type approved)

Calibration Auto-calibration

Display (in/cm) LCD (0.6/1.5 high)

Power requirements AC Adapter - 100, 120, 220, 240 V ac, 50/60 Hz

Platform size (in/cm) 3.5/9.0 diameter

Free height above

Platform (in/cm) 9.3/23.6

Dimensions

(WxHxD) (in/cm) 8.3 x 14.5 x 14.5/21.1 x 36.8 x 36.8

Net Weight (lb/kg) 15/6.8

Shipping weight (lb/kg) 25/11.4

SPECIFICATIONS

NOTE: Models AS60E, AS120E and AS200E are type approved. The E designation

after the model number signifies type approved.
32

PARTS INFORMATION

If you require replacement parts or would like to purchase accessories, please call

Ohaus Corporation toll-free at (800) 526-0659. An Ohaus Product Parts Specialist

will be available to help you.

REPLACEMENT PARTS

Description OHAUS Part No.

AC Adapters:

100 V ac 90524-11

120 V ac 90524-10

220 V ac 90524-13

240 V ac 90524-14

240 V ac Australia 90524-15

Platform - 3.5” dia. 77495-01

Draft Shield 77537-01

ACCESSORIES

Description OHAUS Part No.

RS232 Interface Kit 77018-01

Cable for RS232 Interface with 9 pin balance connector AS017-20

Cable for RS232 Interface with PRINT switch and 9 pin balance

connector AS017-25

Security Device 76288-00

Dust Cover 78121-01

Calibration Masses - ASTM Class 1 Tolerance:

20g 49024-11

50g 49054-11

100g 49015-11

200g 49025-11
33

LIMITED WARRANTY

Ohaus products are warranted against defects in materials and

workmanship from the date of delivery through the duration of the

warranty period. During the warranty period Ohaus will repair, or, at

its option, replace any component(s) that proves to be defective at no

charge, provided that the product is returned, freight prepaid, to

Ohaus.

This warranty does not apply if the product has been damaged by

accident or misuse, exposed to radioactive or corrosive materials,

has foreign material penetrating to the inside of the product, or as a

result of service or modification by other than Ohaus. In lieu of a

properly returned warranty registration card, the warranty period shall

begin on the date of shipment to the authorized dealer. No other

express or implied warranty is given by Ohaus Corporation. Ohaus

Corporation shall not be liable for any consequential damages.

As warranty legislation differs from state to state and country to

country, please contact Ohaus or your local Ohaus dealer for further

details.
34

Ohaus Corporation

29 Hanover Road,

Florham Park, NJ 07932, USA

Tel: (973) 377-9000,

Fax: (973) 593-0359

With offices worldwide.

P/N 77810-02 R1295 © Ohaus Corporation 1993, 1995, all rights reserved.
Instruction Manual

ANALYTICAL Standard

Electronic Balance

Model AS60C

Ohaus Corporation

29 Hanover Road

Florham Park NJ

07932-0900
2

NOTE: THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH

THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF

THE FCC RULES.

THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION

AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED

IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES,

AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED

AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE

HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPERATION OF

THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL

INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.

THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR

RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS SET OUT IN THE

INTERFERENCE-CAUSING EQUIPMENT STANDARD ENTITLED "DIGITAL APPARATUS", ICES-003 OF THE DEPARTMENT OF COMMUNICATIONS.

CET APPAREIL NUMÉRIQUE RESPECTE LES LIMITES DE BRUITS

RADIOÉLECTRIQUES APPLICABLES AUX APPAREILS NUMÉRIQUES DE

CLASSE A PRESCRITES DANS LA NORMA SUR LE MATÉRIAL BROUILLEUR :

"APPAREILS NUMÉRIQUES", NMB-003 ÉDICTÉE PAR LE MINISTRE DES COMMUNICATIONS.

Unauthorized changes or modifications to this equipment are not permitted.
3

TABLE OF CONTENTS

INTRODUCTION .................................................................................................. 5

DESCRIPTION ..................................................................................................... 5

UNPACKING ........................................................................................................ 6

INSTALLATION .................................................................................................... 7

Environment .................................................................................................. 7

Draft Shield and Spill Ring ............................................................................ 7

Pan ................................................................................................................ 8

AC Adapter .................................................................................................... 8

Leveling the Balance ..................................................................................... 8

OPERATION ........................................................................................................ 9

Turning the Balance ON ................................................................................ 9

Warm Up ....................................................................................................... 9

Checking Calibration ................................................................................... 10

Weighing .................................................................................................... 10

Zero/Tare .................................................................................................... 11

USING MENUS TO CONFIGURE THE BALANCE ........................................... 12

CALIBRATION MENU ........................................................................................ 13

Calibration Menu Protection ........................................................................ 13

Calibration Weights ..................................................................................... 13

Span Calibration .......................................................................................... 14

Linearity Calibration .................................................................................... 15

End .............................................................................................................. 16

USER MENU ...................................................................................................... 17

User Menu Protection ................................................................................. 17

Reset to Factory Defaults ............................................................................ 18

Averaging Level .......................................................................................... 19

Stability Range ............................................................................................ 20

Auto-Zero .................................................................................................... 20

 End ............................................................................................................. 21
4

SETUP MENU ............................................................................................. 22

Setup Menu Protection ................................................................................ 22

Type Approved Balance .............................................................................. 23

Unit Selection .............................................................................................. 24

Taels ........................................................................................................... 24

Lock Switch ................................................................................................. 25

End .............................................................................................................. 26

MENU LOCK-OUT PROTECTION ..................................................................... 27

TYPE APPROVED BALANCE SEALING ........................................................... 28

CARE AND MAINTENANCE .............................................................................. 29

TROUBLESHOOTING ....................................................................................... 29

Error Codes ................................................................................................. 30

SERVICE INFORMATION ................................................................................. 31

SPECIFICATIONS ............................................................................................. 32

PARTS INFORMATION ..................................................................................... 33

REPLACEMENT PARTS ................................................................................... 33

ACCESSORIES ................................................................................................. 33

NOTES ............................................................................................................... 34

LIMITED WARRANTY ........................................................................................ 35
5

INTRODUCTION

This manual covers installation, operation and troubleshooting for the Ohaus Analytical

Standard balance Model AS60C. The type approved Analytical Standard balance is

setup to conform to OIML, EC and U.S. regulations. To insure proper operation of the

balance, please read this manual completely.

DESCRIPTION

The Ohaus Analytical Standard Model AS60C balance is a precision weighing

instrument, designed to provide years of service with virtually no maintenance. The

Analytical Standard is constructed using a die-cast aluminum base finished with a

durable epoxy powder paint which is resistant to commonly used acids, contains a one

piece solid-state precision electronics PC board and a seven digit LCD display which

is 0.6 inches in height. The Analytical Standard electronic balance is factory set to

measure in grams or carats. A software menu allows measurements in grams (g), troy

ounces (oz t), pennyweight (dwt), mommes (:), carats (ct), and taels for Hong Kong,

Singapore and Taiwan. To prevent measurements from being affected by air currents,

a draft shield is mounted to the balance. A stainless-steel spill ring is removable for

cleaning in the event of accidental spills. Power is supplied through an AC adapter

which is available in five voltages for world-wide usage. Accessories include: an

RS232 interface kit which allows printing of results through an external computer, an

RS232 interface cable with a print switch, a security device and calibration weights.

ANALYTICAL STANDARD Balance
6

UNPACKING

The Analytical Standard balance is shipped with the following items:

• a pan

• an AC power adapter

• a draft shield and spill ring

• a scoop

• an instruction manual

• a warranty card

It is recommended to save the carton and packing material for storing, transporting the

balance or returning it for service.

Draft Shield and

Spill Ring

Analytical Standard

Balance

AC Adapter

Pan

Scoop
7

INSTALLATION

Environment Environment

The balance should always be used in an environment which is free from excessive air

currents, corrosives, vibration, and temperature or humidity extremes. These factors

will affect displayed weight readings.

DO NOT install the balance:

• Next to open windows or doors causing drafts or rapid temperature changes.

• Near air conditioning or heat vents.

• Near vibrating, rotating or reciprocating equipment.

• Near magnetic fields or equipment that generates magnetic fields.

• On an unlevel work surface.

Draft Shield and Spill Ring

To install the draft shield and spill ring:

1. Position the draft shield on top of the

balance as shown (approximately 30

degrees counterclockwise from the

base of the balance).

2. Looking down through the top of the

shield, line up the hole in the bottom

of the shield with the hole in the balance weighing mechanism.

3. Put the draft shield down, fitting the

holes, and turn the shield clockwise

until it locks into place.

4. Make sure that the draft shield is

firmly locked in place.

5. Install the stainless steel spill ring

inside of the draft shield with the

raised surface facing up and correctly oriented.

CAUTION:

Never remove the draft shield with

the pan in place.
8

Pan

Place the pan into the hole in the weighing

mechanism.

AC ADAPTER

RECEPTACLE

PAN

SPILL RING

LEVEL INDICATOR

LEVELING FEET (2)

AC Adapter

Plug the molded connector of the AC

Adapter into the receptacle at the rear of

the balance. Plug the AC Adapter into a

convenient ac outlet. When power is

applied to the balance, it will begin a 60

second self test cycle. During this time, if

the balance is turned ON, the display will

count down from 60 and display the word

CHEC.

Leveling the Balance

The balance is equipped with a level

indicator on the rear and two adjustable leveling feet. Adjust the leveling feet until the bubble appears in

the center circle of the indicator.
9

OPERATION

Turning the Balance ON

With no load on the pan, switch the balance ON by pressing . When first

switched ON, all segments of the display

should be on as shown in the illustration.

This display check will be displayed briefly,

then the model number of the balance

followed by a software revision number.

Warm Up

Before initally using the balance, allow

time for it to adjust to changes in environment. The balance need only be plugged

in to warm up. Recommended warm up

period is 30 minutes.
10

Checking Calibration

Before using the balance, it should be

calibrated. The balance has been calibrated before shipment, however, calibration is influenced by factors such as:

• Variations in the earths gravitational

field at different latitudes of the world.

• Rough handling.

• Changes in work location.

• Height above sea level.

• Environmental conditions.

To check the balance’s calibration, place

a known mass on the center of the pan and

read the displayed weight.

If the displayed weight differs from the

known mass by more than acceptable

limits, refer to the Calibration Menu and

the Specifications at the rear of the manual.

Weighing

1. Press to zero the display.

2. Place the object(s) or material to be

weighed on the pan.

3. Wait for the stability indicator to appear before reading the weight.

STABILITY

INDICATOR
11

Zero/Tare Zero/Tare 

When weighing material or objects that

must be held in a container, O/T enables

you to store the container weight in the

balance’s memory, separate from the

weight of the material in the container.

1. Place an empty container on the pan.

Its weight will be displayed.

2. Press .

The display will show zero and the

container’s weight will be stored in

memory.

3. Add material to the container. As material is added, its net weight will be

displayed.

4. Removing the container and material

from the pan will cause the balance to

display the container’s weight as a

negative number.

The weight remains in balance memory

until is pressed again.

MODE
12

SETUP

LFT

On, Off

SEL

g, dwt , ct, oz t ,

mommes,taels 1,2,3

 LOCSW

Calibration

User

Setup

Print

End

END

USER

RESET

Yes, No

AL

0, 1, 2, 3

STB

.5d, 1d, 2d,

 5d

AUTO-0

OFF , .5d ,

1d , 3d

END

CAL Print

SPAN

LIN

END

USING MENUS TO CONFIGURE THE BALANCE

The Model AS60C Analytical Standard balance contains four display menus which

enable you to calibrate and configure the balance for your specific operating requirements.

Calibration Menu: Used to calibrate the balance for span or linearity.

User Menu: Used to adapt the balance to environmental conditions.

Setup Menu: Used to enable or disable different balance features.

Print Menu: Used to configure the RS232 Interface.

Functions not allowed on verified balances have shaded backgrounds.

NOTE:

PRINT menu appears only

when RS232 option is installed.

To access a menu, press and hold until desired menu appears, then release it.

Original factory default settings are shown in plain boldface type.

Use these buttons to step through menus and select submenus:

next selection select

 displayed item
13

CALIBRATION MENU

The Model AS60C Analytical Standard balance can be calibrated in two ways: Span

calibration or Linearity calibration. Span calibration resets the balance’s weighing

range using two weight values: zero and a weight value at or near the balance’s

capacity. Linearity calibration minimizes deviation between actual and displayed

weights within the balance’s weighing range. Three weight values are used: zero, a

weight value within the balances weighing range, and a weight value at or near the

balance’s specified capacity. The following table shows the sequence in which

submenus appear on the Calibration menu.

CALIBRATION MENU TABLE

Selects span calibration.

Selects linearity calibration.

Used to exit the Calibration menu.

Calibration Menu Protection

Calibration may be locked out to prevent

unauthorized personnel from changing

calibration. To lock out calibration menu,

refer to the section titled Menu Lock-Out

Protection.

NOTE: If calibration has been locked out,

you will not be able to access it.

Calibration Masses

Before beginning calibration, make sure

masses are on hand. If you begin calibration and realize masses are not available,

either turn the balance off, or go through

the procedure without masses. The balance will use previously stored calibration

data. Calibration should be performed as

necessary to ensure accurate weighing.

Masses required to perform the procedures are listed in the adjacent table.

CALIBRATION MASSES

LINEARITY SPAN ONLY

MODEL MASS MASS

AS60C 20g, 50g 50g

Masses must meet or exceed ASTM Class 1

Tolerance. Calibration masses are available

as accessories.
14

Span Calibration

1. Press and hold until CAL is

displayed, then release it. Balance

will display SPAN.

2. Press to start the Span Calibration Procedure.

3. When is released C 0g will be

displayed indicating that no weight

should be on the pan.

4. Press . The display will show

-C- momentarily, followed by the value of the weight which must be placed

on the pan. Do not disturb the balance when -C- is displayed. Disturbances will result in improper calibration.

5. Place the required weight on the pan

and press . The display will

show -C- momentarily while the balance recalibrates.

6. When the weight on the pan is displayed along with the current unit

indicator, the balance is recalibrated.
15

Linearity Calibration

1. Press and hold until CAL is

displayed, then release it. Balance

will display SPAN.

2. Press and the display will show

LIN.

3. Press to start the Linearity

Calibration Procedure.

4. When is released, C 0g will be

displayed, indicating that no weight

should be on the pan.

5. Press . The display will show

-C- momentarily, followed by the value of the weight which must be placed

on the pan. Do not disturb the balance when -C- is displayed. Disturbances will result in improper calibration.

6. Place the required weight on the pan.
16

End

If you have entered the Calibration menu

and do not wish to calibrate the balance,

use END to return to normal weighing

operations.

Repeately press until End is displayed.

Press , when released, the balance

will returned to normal weighing operations.

7. Press . The display will show

-C- momentarily, then C followed by

the next weight to be placed on the

pan.

8. Place the required weight on the pan,

then press . The display will

show -C- momentarily, while the balance recalibrates.

9. When the weight on the pan is displayed along with the current indicator, the balance is recalibrated.
17

USER MENU

The User menu is used to adapt the balance to environmental condtions. It contains

submenus which enable you to reset the balance to factory default settings or to select

specific range settings. Access to the User menu can be disabled using the Lock out

switch. The following table shows the sequence in which submenus appear on the

User menu.

USER MENU TABLE

Sets all submenus below to original

factory default settings. Reset does not

appear if menu has been locked out.

Specifies the averaging level.

Specifies the desired stability range.

Sets Auto-Zero threshold.

Used to exit the Setup menu and store

your selections.

User Menu Protection

The User menu may be locked out to

prevent unauthorized personnel from

changing the settings. To lock out the

User menu, refer to the section titled

Menu Lock-Out Protection.

NOTE: If -SAFE- is displayed, the User

menu has been locked out. Settings may

be viewed but not changed. See the

Menu Lock-Out Protection section to enable it for making changes.

To access the User menu press and hold

 until USER is displayed, then release it.
18

Reset to Factory Defaults

This submenu enables you to reset all

User menu selections to the factory default settings outlined in the adjacent table.

To reset to factory defaults:

1. Access the RESET submenu.

2. Press to change the setting.

3. Select YES to reset settings or,

no to leave current settings.

4. Press to accept the displayed

setting.

To access a submenu:

1. Repeatedly press until the desired submenu is displayed.

2. Press to select the displayed

submenu.

NOTE: You must use END to store any

changes you make to the User menu.

The following sections describe each item

on the User menu in detail.

USER MENU

FACTORY DEFAULTS

Averaging Level AL 1

Stability Range 1d

Auto-Zero Tracking .5d
19

Averaging Level Averaging Level

Averaging level compensates for vibration or excessive air currents. During

operation, the balance continually takes

weight readings from the weighing cell.

Successive readings are then digitally processed to achieve a stabilized display.

Use this submenu to specify how much

processing you need to obtain stable results.

NOTE: Averaging level does not affect

balance accuracy.

Select one of four averaging levels using

the adjacent table as a guide.

To view or change the averaging level:

1. Access the AL submenu to display

the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

4. When is released, AL will be

displayed again and the Setup menu

will be returned.

AVERAGING LEVEL

AL 0 reduced stability, fastest

stabilization time

AL 1 normal stability, normal 1 normal stability, normal

stabilization time

AL 2 more stability, slow stabilization time

AL 3 maximum stability, slowest stabilization time
20

Stability Range

The stability range specifies how much a

displayed weight may change while the

stability indicator remains ON. When displayed weight changes beyond the allowable range, the stability indicator turns

OFF indicating an unstable condition. The

Model AS60C Analytical Standard balance allows the selection of one of four

stability ranges (in divisions) as shown in

the table.

When the RS232 interface is configured to

print stable data only, the stability range

also governs data output. Displayed data

will only be output if it is within the selected

stability range.

To view or change the stability range:

1. Access the Stb submenu to display

the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

4. When is released, Stb will be

displayed again and the Setup menu

will be returned.

STABILITY RANGE

.5d smallest range: stability indicator is ON only when displayed weight is within .5 divisions

1d reduced range

2d normal range

5d largest range: stability indicator is ON even though displayed weight changes

slightly

Auto-Zero

Auto-Zero minimizes the effects of temperature changes and shift on the zero

reading. By defining a threshold level in

divisions, the balance maintains the zero

display until the threshold is exceeded.

This submenu permits you to select one of

three threshold levels, or turn the feature

OFF. Auto-Zero only functions when the

display reads zero.
21

To view or change the Auto-Zero setting:

1. Access the Auto-0 submenu to display the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

4. When is released, Auto-0 will

be displayed again and the User menu

will be returned.

End

You must use END to exit the User menu.

Changes you make in the User menu

are only stored in memory if you use

END.

1. To exit the User menu and store your

settings, press when End is

displayed.

2. When is released, the balance

will be returned to normal weighing

operations.

AUTO ZERO

OFF turns Auto-Zero OFF

.5d sets threshold to .5 divisions

1d sets threshold to 1 division

3d sets threshold to 3 divisions
22

Setup Menu Protection

The Setup menu may be locked out to

prevent unauthorized personnel from

changing settings. To lock out the Setup

menu, refer to the section titled Menu

Lock-Out Protection.

NOTE: If -SAFE- is displayed, the Setup

menu has been locked out. Settings may

be viewed but not changed. See the Menu

Lock-Out Protection section to enable it

for making changes.

Sets balance for type approved operation.

Specifies which weighing units and

operating modes will be available for

operation.

Enables individual or all menus to be

locked out.

Used to exit the Setup menu and

store your selections.

SETUP MENU

The Setup menu enables you to retain program balance parameters once they have

been set. Access to the Setup menu can be disabled using the Lock out switch. The

following table shows the sequence in which submenus appear on the Setup menu.

 SETUP MENU TABLE

To access the Setup menu, press and

hold until SETUP is displayed, then

release it.
23

Type Approved Balance

This parameter can be set to ON or OFF.

Selecting ON automatically sets certain

parameters for type approved requirements. Before setting LFT ON, the balance must be calibrated. See Calibration

Menu for details. For sealing method,

refer to Type Approved Balance Sealing

section.

1. Access the LFT submenu.

2. The display will show the current status (ON/OFF). If ON is selected,

Auto-Zero Tracking will be locked on

to 0.5d. and Lock Switch default becomes Setup.

3. Press to change the status.

4. Press to accept the status.

5. When is released, the display

will show LFT.

To access a submenu:

1. Repeatedly press until the desired submenu is displayed.

2. Press to select the displayed

submenu.

NOTE: You must use END to store any

changes you make to the Setup menu.

The following sections describe each item

on the Setup menu in detail.
24

Unit Selection

Unit selection permits you to specify which

weighing units will be enabled for use

during operation. The adjacent table lists

the units available.

To enable or disable the various weighing

units, use the following procedure:

1. Access the SEL menu.

2. The display will show the grams unit

indicator (g) along with the current

status (ON/OFF).

3. Press to change the status.

4. Press to accept the displayed

status. When is released, the

display will show the next unit indicator with the current status.

Weighing Units

g grams : mommes

dwt pennyweight ct carats

oz t troy ounces t taels

(Hong Kong)

(Singapore)

(Taiwan)

5. Set each unit ON or OFF as in step 3.

Taels

If taels are enabled, you will be required to

choose one of three different taels: Hong

Kong, Singapore, or Taiwan.

When the display shows TAEL 1, press

 to change to another tael, press

 to accept the displayed tael.

When the last weighing unit has been set,

the display will show SEL again and the

Setup menu will be returned.
25

Lock Switch

Lock switch enables you to lock out one or

more menu selections. Each menu can be

individually locked YES, or unlocked

NO.Set the appropriate balance functions,

and then decide which functions of the

balance are to be locked. The Calibration,

User, and Setup menus can be individually locked by selecting YES for the appropriate menu, and then locked by the switch

located under the right hand side of the

control panel.

1. Access the LOCSW submenu.

When is released, the LOCSW

submenu is displayed.

2. To access one or more menus, press

 to select the calibration menu,

-CAL- is displayed.

NOTE: Pressing changes the

selection to the other menus.

3. To select a YES or NO, press 

NOTE: The switch acts as a

toggle and can select either YES or

NO.

4. To confirm your selection, press

 again. The display indicates

the last menu you were in.
26

End

You must use END to exit the Setup menu.

Changes you make in the Setup menu

are only stored in memory if you use

END.

To exit the Setup menu and store your

settings, press when END is displayed.

When is released, the balance will

be returned to normal weighing operations.

5. To lock out the other menus, press

 and repeat the procedure in

steps 3 and 4.
27

Access to the Calibration, User, and Setup

menus, can be disabled using the lock out

switch located under the right side of the

balance, near the display.

1. Turn the display off and unplug the

power cord.

2. Slide the balance toward you, with

the front over the edge of a table.

(You can also turn the balance on its

left side, but if you do, you MUST

remove the pan and spill ring first!)

3. Locate hole under display where

switch is located.

4. Using a small screwdriver, slide the

switch forward for LOCKED or back

for UNLOCKED.

5. Plug in the power cord and turn on the

balance.

MENU LOCK-OUT PROTECTION

LOCK OUT

SWITCH

LOCK

UNLOCK
28

TYPE APPROVED BALANCE SEALING

The AS60C balance contains parts used by local Weights and Measures officials for

type approved sealing. Parts include a bracket, lead seal and wire, wrench and a

security screw.

After the balance has been set up properly and the menus are locked out (LFT menu

selection set ON), proceed as follows to seal the balance:

1. Turn OFF and unplug the balance. Remove the Draft Shield, Spill Ring and Pan.

2. Turn the balance over and locate the access hole to the lock out switch.

3. Remove the existing screw next to the access hole and discard.

4. Place the Bracket supplied over the access hole and secure with the Security

Screw supplied. Tighten with the Wrench supplied.

5. Obtain the Lead Seal and wire. Pass the wire through the Security Screw and

the eyelet on the Bracket as shown in the illustration.

6. Crimp the lead seal tightly. Turn the balance over and reinstall items removed.

BASE OF BALANCE

BRACKET

SECURITY SCREW LEAD AND WIRE SEAL
29

REMEDY

Check power adapter

connections.

Press with no weight

on the pan, then weigh item.

Recalibrate correctly.

You MUST use END to exit

menus and save settings.

Verify interface settings in

Print menu correspond to

those of peripheral device.

Check cable connections.

Unplug the power cord, then

replug again. If condition

persists, unit must be

serviced.

Set Lock switch to OFF.

Set LFT OFF, in LFT

applications, seal will be

broken. Breaking the seal will

nullify the legal application.

Place balance on a stable

surface or change averaging

level.

See Error Codes Table.

PROBABLE CAUSE(S)

Power adapter not plugged in

or properly connected to

balance.

Balance was not zeroed

before weighing.

Balance not properly

calibrated.

END not being used to exit

menus.

Print menu settings not

properly set up.

Cable connections.

Microprocessor lock-up.

Lock switch set ON.

LFT set ON.

Vibration on table

surface.

TROUBLESHOOTING

CARE AND MAINTENANCE

To keep the balance operating properly, the housing, spill pan and pan should be kept

clean and free from foreign material. If necessary, a cloth dampened with a mild

detergent may be used. Keep calibration weights in a safe dry place.

SYMPTOM

Unit will not turn on.

Incorrect weight reading.

Unable to store menu settings/

changes.

RS232 interface not working

(when installed).

Random segments displayed

or display locks up.

Unable to change settings.

Unstable readings.

Error message display.
30

Error Codes

The following list describes the various error codes and which can appear on the

display and the suggested remedy.

Data Errors

0.0 Transient error (hardware error, probably static discharge). If error persists,

the balance must be serviced.

Zero/Tare Errors

2.0 Balance is unable to stabilize within time limit after zero/taring. Environment is

too hostile or balance needs recalibration.

Calibration Errors

3.0 Incorrect or no calibration weight used for calibration. Recalibrate with correct

weights.

RS232 Errors

4.0 Bad RS232 frame. Check RS232 menu parameters and correct.

4.4 RS232 buffer is full (if installed). May occur if no printer or computer is

connected to the interface. To clear buffer, turn balance off or enter Print menu

and select END.

4.5 Function is disabled by the Lock switch.

User Errors

7.2 Number outside of display capacity.

Over-Under Load Errors

8.0 Hardware error causing an internal weight signal which is too low. Check if pan

or pan support is off. If not, the balance must be serviced.

8.1 Hardware error caused by an internal weight signal which is too high. Check

load on the platform which may be excessive. If error persists, the balance must

be serviced.

8.2 Power-on load out of specification: Balance was turned on with load on pan or

pan off balance. No load may be on pan when turned on and pan must be in

place.

8.3 Rated capacity exceeded. Remove excessive weight from pan.

8.4 Underload condition on balance. Check that the proper pan and pan support are

installed.
31

Error Codes (Cont.) Error Codes (Cont.)

CheckSum Errors

9.0 Bad factory checksum. If error persists, have the balance serviced.

9.5 Bad factory calibration checksum. If error persists, have the balance serviced.

9.6 Bad mode checksum. Turn the balance off using the front panel controls. If the

error persists, have the balance serviced.

9.7 Invalid setup data checksum. Check Setup, User and Print menu (when RS232

is installed) settings. If possible, try to enter menus and exit using END to restore

menu settings. May be caused by a faulty component, or in rare cases, a severe

static charge. If error persists, balance must be serviced.

9.8 Hardware error causing invalid calibration data checksum. Balance may need

recalibration - particularly linearity calibration. If error persists, balance must be

serviced.

9.9 Invalid temperature compensation checksum. Balance will work with default

temperature compensation data, however, error will occur each time balance is

turned on. Have balance serviced.

SERVICE INFORMATION

If the Troubleshooting section does not resolve or describe your problem, you will need

to contact an authorized Ohaus Service Agent. For Service assistance in the United

States, please call Ohaus Corporation toll-free at (800) 526-0659. An Ohaus Product

Service Specialist will be available to help you.
32

MODEL AS60C

Capacity 62 g

310 ct

2 oz t

39.8 dwt

16.53 mommes (:)

1.66 t Hong Kong

1.65 t Taiwan

1.64 t Singapore

Readability 1 mg

0.001 ct

0.00001 oz t

0.0001 dwt

0.0001 mommes (:)

0.00001 t

Weighing modes g, ct, oz t, dwt, :, t

Repeatabilty (std. dev.) (mg) 0.1

Linearity + 1 mg/0.002 ct

Tare range To capacity by subtraction

Stabilization time 4 seconds

Sensitivity drift (10 ° to 30°C) 2ppm/ °C

Operating temperature 41° to 104°F/5° to 40°C (Non type approved)

 59° to 86F° /15° to 30°C (Type approved)

Calibration Auto-calibration

Display (in/cm) LCD (0.6/1.5 high)

Power requirements AC Adapter - 100, 120, 220, 240 V ac, 50/60 Hz

Platform size (in/cm) 3.5/9.0 diameter

Free height above

Platform (in/cm) 9.3/23.6

Dimensions

(WxHxD) (in/cm) 8.3 x 14.5 x 14.5/21.1 x 36.8 x 36.8

Net Weight (lb/kg) 15/6.8

Shipping weight (lb/kg) 25/11.4

SPECIFICATIONS
33

PARTS INFORMATION

If you require replacement parts or would like to purchase accessories, please call

Ohaus Corporation toll-free at (800) 526-0659. An Ohaus Product Parts Specialist will

be available to help you.

REPLACEMENT PARTS

Description OHAUS Part No.

AC Adapters:

100 V ac 90524-11

120 V ac 90524-10

220 V ac 90524-13

240 V ac 90524-14

240 V ac Australia 90524-15

Platform - 3.5” dia. 77495-01

Draft Shield 77537-01

ACCESSORIES

Description OHAUS Part No.

RS232 Interface Kit 77018-01

Cable for RS232 Interface AS017-20

Cable for RS232 Interface with PRINT switch AS017-25

Dust Cover 78121-01

Security Device 76288-00

Calibration Masses - ASTM Class 1 Tolerance:

20g 49024-11

50g 49054-11
34

LIMITED WARRANTY

Ohaus products are warranted against defects in materials and

workmanship from the date of delivery through the duration of the

warranty period. During the warranty period Ohaus will repair, or, at its

option, replace any component(s) that proves to be defective at no

charge, provided that the product is returned, freight prepaid, to

Ohaus.

This warranty does not apply if the product has been damaged by

accident or misuse, exposed to radioactive or corrosive materials, has

foreign material penetrating to the inside of the product, or as a result

of service or modification by other than Ohaus. In lieu of a properly

returned warranty registration card, the warranty period shall begin on

the date of shipment to the authorized dealer. No other express or

implied warranty is given by Ohaus Corporation. Ohaus Corporation

shall not be liable for any consequential damages.

As warranty legislation differs from state to state and country to

country, please contact Ohaus or your local Ohaus dealer for further

details.
35

Ohaus Corporation

29 Hanover Road,

Florham Park, NJ 07932, USA

Tel: (201) 377-9000,

Fax: (201) 593-0359

With offices worldwide.

P/N 77811-01 R0496 © Ohaus Corporation 1995, 1996 all rights reserved.
1

Instruction Manual

RS232 INTERFACE ACCESSORY

Part Number 77018-01

For

ANALYTICAL Standard Series

and

PRECISION Standard Balance Series

Ohaus Corporation

29 Hanover Road

Florham Park NJ

07932-0900
2

NOTICE: THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO

COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES.

THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE

EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT.

THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO

FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE

HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY

TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER

WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS

OWN EXPENSE.

THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS

SET OUT IN THE INTERFERENCE-CAUSING EQUIPMENT STANDARD ENTITLED “DIGITAL APPARATUS”, ICES-003 OF THE

DEPARTMENT OF COMMUNICATIONS.

CET APPAREIL NUMERIQUE RESPECTE LES LIMITES DE BRUITS

RADIOELECTRIQUES APPLICABLES AUX APPAREILS NUMERIQUES

DE CLASSE A PRESCRITES DANS LA NORME SUR LE MATERIEL

BROUILLEUR : “APPAREILS NUMERIQUES”, NMB-003 EDICTEE PAR

LE MINISTRE DES COMMUNICATIONS.

Unauthorized changes or modifications to this equipment are not

permitted.
3

TABLE OF CONTENTS

INTRODUCTION .................................................................................................. 4

INSTALLATION .................................................................................................... 4

USING MENUS TO CONFIGURE THE BALANCE ............................................. 6

PRINT MENU ....................................................................................................... 7

Print Menu Protection .................................................................................... 7

Reset to Factory Defaults .............................................................................. 8

Baud Rate ..................................................................................................... 9

Data Bits ........................................................................................................ 9

Parity ........................................................................................................... 10

Stop Bits ...................................................................................................... 10

Auto Print Feature ....................................................................................... 11

Print Stable Data Only ................................................................................. 11

Print Numeric Data Only ............................................................................. 12

End .............................................................................................................. 12

MENU LOCK-OUT PROTECTION ..................................................................... 13

USING THE INTERFACE .................................................................................. 14

Hardware ..................................................................................................... 14

RS232 Commands ...................................................................................... 14

CARE AND MAINTENANCE .............................................................................. 17

TROUBLESHOOTING ....................................................................................... 17

Error Codes ................................................................................................. 17

SERVICE INFORMATION ................................................................................. 17

LIMITED WARRANTY ........................................................................................ 19
4

INTRODUCTION

The RS232 Interface Accessory is a

bidirectional interface which enables either a Precision Standard or an Analytical

Standard balance to communicate with a

printer or computer equipped with an

RS232 serial port. The interface assembly

is easily installed in the balance and communication parameters are configured

through the balance’s front panel.

INSTALLATION

Use the following procedure to install the

RS232 Interface accessory.

CAUTION

TO PREVENT DAMAGE TO THE BALANCE, BE CERTAIN THAT POWER IS

DISCONNECTED BEFORE REMOVING

THE COVER.

1. Disconnect power to the balance.

2. Remove the draft shield (if installed).

3. Remove the pan and pan support.

4. Using a philips screwdriver, remove the three screws and washers

which secure the cover to the balance. The balance will have to be

turned over or on its side to access

the screws as they are located

on the bottom; two under the

front panel and one on the rear.

CAUTION

HOLD THE COVER AND BASE TOGETHER WHILE REMOVING SCREWS.

DO NOT ALLOW COVER OR BASE TO

FALL.
5

5. Remove the cover.

6. On the rear of the balance, a protective thin plate covers the hole for the

9-pin RS232 connector.

Peel off the plate to expose the hole.

7. Place the circuit board and connector

assembly in the balance so that the 9-

pin connector fits through the hole.

Remove Plate

8. Fasten the assembly using the two

screws provided.

9. Slide the ribbon connector onto the

edge connector of the main circuit

board.

10. Replace the cover and fasten the

three screws that were removed.

11. Replace the draft shield.

12. Replace the pan and pan support.

13. Reconnect power to the balance.

Ribbon

Connector

RS232

Circuit

Board

Fasten

Screws
6

PRINT MENU

RESET

BAUD RATE

300, 1200, 2400,

4800, 9600

DATA BITS

7 or 8

PARITY BIT

Odd, Even, None, 1, 0

STOP BITS

1 or 2

AUTO PRINT

continuous, on stability,

 OFF

STABLE DATA OUTPUT ONLY

 ON or OFF

 NUMERIC DATA OUTPUT ONLY

 ON or OFF

END

USING MENUS TO CONFIGURE THE BALANCE

The Analytical Standard and Precision Standard balances both contain four display

menus which enable you to calibrate and configure the balance for your specific

operating requirements. The print menu shown below is used to configure the RS232

interface.
7

PRINT MENU

When the interface is installed, the Print menu is used to configure the RS232 interface

parameters and customize the balance’s print functions for your requirements. The

following table shows the sequence in which submenus appear on the Print menu.

PRINT MENU TABLE

Sets all submenus below to original factory

default settings.

Specifies baud rate.

Specifies number of data bits.

Specifies parity type, if any.

Specifies number of stop bits.

Enables/disables Auto print feature.

Enables/disables printing stable-data-only

feature.

Specifies numeric-only or full display data

for output.

Used to exit the Print menu and store your

selections.

* Does not appear in menu if menu is locked out.

Print Menu Protection

The Print menu may be locked out to

prevent unauthorized personnel from

changing settings. To lock out the print

menu, refer to the section titled Menu

Lock-Out-Protection.

To access the Print menu press and hold

 until PRINT is displayed, then release it.

If SAFE is displayed, the Print menu has

been locked-out. Settings may be viewed

but not changed. See the Menu Lock-Out

Protection section to enable it for making

changes.

*

ON

TARE
8

Reset to Factory Defaults

This submenu enables you to reset all

RS232 menu selections to the original

factory default settings outlined in the adjacent table.

To reset to factory defaults:

1. Access the Reset submenu to view

the current setting.

2. Press to change the setting.

(Select YES to reset settings or,

NO to leave current settings.)

Press to accept the displayed

setting.

To access a submenu:

1. Repeatedly press until the desired submenu is displayed.

2. Press to select the displayed

submenu.

NOTE: You must use END to store any

changes you make to the Print menu.

The following sections describe each item

on the Print menu in detail.

ON

TARE

OFF

MODE

PRINT MENU

FACTORY DEFAULTS

Baud rate br 2400

Data Bits 7 data

Parity None

Stop Bits 2 stop

Auto Print OFF

Stable Data Only OFF

Numeric Data Only OFF

ON

TARE

OFF

MODE
9

Baud Rate

This submenu is used to select the desired baud rate. There are five available

baud rates to choose from: 300, 1200,

2400, 4800 and 9600.

To view or change the baud rate:

1. Access the Baud submenu to display the current setting.

2. Press to change the setting.

Press to accept the displayed

setting.

When is released, BAUD will be

displayed again and the Print menu

will be returned.

Data Bits

The total number of bits for Data, Parity

and Stop must equal 9 or 10. (see examples). The balance will not permit you

to select a combination that does not equal

9 or 10.

To set the number of data bits to 7 or 8:

1. Access the Data submenu to display

the current setting.

2. Press to change the setting.

Press to accept the displayed

setting. When is released,

DATA will be displayed again and the

Print menu will be returned.

EXAMPLES

8 Data + 2 Stop + No Parity = 10

8 Data + 1 Stop + Odd Parity = 10

7 Data + 1 Stop + Odd Parity = 9

ON

TARE

ON

TARE

OFF

MODE

ON

TARE

ON

TARE

OFF

MODE
10

2. Press to change the setting.

Press to accept the displayed

setting.

NOTE: If all selections do not appear, total

number of data, parity and stop bits is

currently < 8 or > 10. Data or stop bits must

be changed.

When is released, PARITY will be

displayed again and the Print menu will be

returned.

Stop Bits

The number of stop bits can be set to 1 or

2 as follows:

1. Access the Stop submenu to display

the current setting.

2. Press to change the setting.

3. Press to accept the displayed

setting.

NOTE: If all selections do not appear, total

number of data, parity and stop bits is

currently < 8 or > 10. Data or parity bits

must be changed.

When is released, STOP will be

displayed again and the Print menu will be

returned.

Parity

Parity can be set to Odd, Even, None, or a

marker of 0 or 1 as follows:

1. Access the Parity submenu to display

the current setting.

MODE

ON

TARE

MODE

ON

TARE

ON

TARE

ON

TARE
11

Auto Print Feature

When enabled, the Auto Print feature

causes the balance to automatically output display data in one of two ways: continuously, or upon stability.

To select one of these Auto Print methods,

or to turn the feature off:

1. Access the AutoP submenu to display the current setting.

2. Press to change the setting.

Press to accept the displayed

setting.

When is released, AUTOP will be

displayed again and the Print menu will be

returned.

.

ON

TARE

ON

TARE

Print Stable Data Only

When enabled, this feature permits only

stable display data to be output. To set the

feature ON or OFF:

1. Access the Stable submenu to display the current status.

2. Press to change the status.

Press to accept the displayed

status.

OFF

MODE

ON

TARE

OFF

MODE
12

Print Numeric Data Only

This submenu is used to select numeric

data only, or full display data for RS232

output. Set this feature ON to output numeric display data only, or OFF to output

full display data as follows:

1. Access the Nu submenu to display

the current status.

2. Press to change the status.

Press to accept the displayed

status.

When is released, NU will be displayed again and the Print menu will be

returned.

When is released, STABLE will be

displayed again and the Print menu will be

returned.

End

You must use END to exit the Print menu.

Changes you make in the Print menu

are only stored in memory if you use

End.

ON

TARE

ON

TARE

ON

TARE

OFF

MODE

To exit the Print menu and store your

selections, press when END is displayed. The balance will be returned to

normal weighing operations.

ON

TARE
13

MENU LOCK-OUT PROTECTION

Access to the Print Menu can be disabled using the lock-out switch located under the

right side of the balance, near the display.

1. Turn display off and unplug the power cord.

2. Slide the balance toward you, with the front over the edge of a table. (You can also

turn the balance on its left side, but if you do, you MUST remove the draft shield,

pan and pan support first!)

3. Locate hole under display where

switch is located.

4. Using a small screwdriver, slide the

switch forward for LOCKED or back

for UNLOCKED.

5. Plug in the power cord and turn on the

balance.

LOCK-OUT SWITCH

UNLOCK

LOCK
14

USING THE INTERFACE

When the interface is installed, a short

press on the switch will initiate a

print command. Data output is in the

format shown under the P command in the

RS232 Command Table.

When the interface is connected to a computer, two way communication between

the computer and balance is possible using the commands outlined in the RS232

Command Table.

Hardware

The balance can be interfaced with other

equipment utilizing the 9-pin subminiature “D” connector. The pinout and pin

connections are shown in the adjacent

illustration.

The balance will not output any data unless pin 5 (CTS) is held in an ON state (+3

to +15 VDC). Interfaces not utilizing the

CTS handshake may tie pin 5 to pin 6 to

defeat it.

RS232 Commands

All communication is accomplished using

standard ASCII format. Only the characters shown in the following table are acknowledged by the balance. Any other

commands, control characters or spaces

are ignored.

Commands sent to the balance must be

terminated with a carriage return (CR) or

carriage return-line line feed (CRLF). For

example, a tare command should appear

as shown in the adjacent diagram. Data

output by the balance is always terminated with a carriage return - line feed

(CRLF).

Field: T CR LF

Length: 1 1 1

TARE COMMAND

TARE *

PRINT *

1 5VDC (50 mA max.)

2 Data Out (TXD)

3 Data In (RXD)

4* Tare (External signal)

5 Clear To Send (CTS)

6 Data Terminal Ready (DTR)

7 Ground

8 Request To Send (RTS)

9* Print (External signal)

* External PRINT and/or TARE

switches may be installed as shown

in the diagram. Momentary contact switches must be used.

OFF

MODE
15

RS232 COMMAND TABLE

Command

Character Description

? Print current mode

nnnA Set Auto Print feature to “n”

(see table).

C Begin span calibration

xD Set 1 second print delay (set x = 0 for OFF, or x = 1 for ON)

xI Set Averaging Level to “x”,

where x = 0 to 3 (see table).

L Begin linearity calibration

Field: Mode Stab CR LF

Length: 5 1 1 1

blank if stable

“ ? ” if unstable

n = 0 Turns feature OFF

n = S Output on stability

n = C Output is continuous

Grams

Pennyweight

Carats

Avoidupois ounces

Troy ounces

Grains

Taels

Momme

Pounds

Pounds:ounces

Custom unit

Parts counting

Percent weighing

Error

0 = minimum level

1 =

2 =

3 = maximum level

P Print display data

When “numeric only” display

data is selected for output in

the RS232 menu, the Mode

field is not output. Displayed weight sent right justified w/lead

zero blanking.

Nine characters include:

decimal point (1)

weight (7 max))

polarity (1): blank if positive

“ - ” if negative

 Field: Weight Mode Stab CR LF

Length: 9 1 5 1 1 1

Same as ? command
16

Field: Model # EPROM # CR LF

Length: 7 15 1 1

Command

Character Description

xS Set stable data only printing (set x = 0 for OFF, or x = 1 for ON).

T Same effect as pressing tare button

V Print EPROM version

xZ Set Auto Zero to “x”,

where x = 0 to 3 (see table).

Esc L Prints listing of Setup and Print menu settings.

Esc R Resets Setup and Print menus to factory defaults.

CAUTION: This will reset RS232 configuration.

Esc S Save current settings.

RS232 COMMAND TABLE (Cont.)

Balance Model

"98101-XX Sr*XX.X"

0 = OFF

1 = .5 d

2 = 1 d

3 = 3 d
17

CARE AND MAINTENANCE

The RS232 Interface Accessory once installed does not require maintenance.

TROUBLESHOOTING

PROBABLE CAUSE(S)

Print menu settings not

properly set up.

Cable connections.

SYMPTOM

RS232 interface not

working.

REMEDY

Verify interface settings in

Print menu correspond to

those of peripheral device.

Check cable connections.

Error Codes

When the RS232 interface is installed in Precision Standard and Analytical Standard

balances, the following error codes are added to the standard list of error codes:

4.0 Bad RS232 frame. Check RS232 menu parameters and correct.

4.4 RS232 buffer is full. May occur if no printer or computer is connected to the

interface. To clear buffer turn balance off, or enter and exit Print menu and select

END.

4.5 Function is disabled by the Lockswitch.

SERVICE INFORMATION

If the Troubleshooting section does not resolve or describe your problem, you will need

to contact an authorized Ohaus Service Agent. For Service assistance in the United

States, please call Ohaus Corporation toll-free at (800) 526-0659. An Ohaus Product

Service Specialist will be available to help you.
18
19

LIMITED WARRANTY

Ohaus products are warranted against defects in materials and

workmanship from the date of delivery through the duration of the

warranty period. During the warranty period Ohaus will repair, or, at its

option, replace any component(s) that proves to be defective at no

charge, provided that the product is returned, freight prepaid, to

Ohaus.

This warranty does not apply if the product has been damaged by

accident or misuse, exposed to radioactive or corrosive materials, has

foreign material penetrating to the inside of the product, or as a result

of service or modification by other than Ohaus. In lieu of a properly

returned warranty registration card, the warranty period shall begin on

the date of shipment to the authorized dealer. No other express or

implied warranty is given by Ohaus Corporation. Ohaus Corporation

shall not be liable for any consequential damages.

As warranty legislation differs from state to state and country to

country, please contact Ohaus or your local Ohaus dealer for further

details.
20

Ohaus Corporation Ohaus Europe Ltd.

29 Hanover Road, ENGLAND

Florham Park, NJ 07932, USA Tel: +44 (0) 1954 251343,

Tel: (201) 377-9000, Fax: +44 (0) 1954 250205

Fax: (201) 593-0359

With offices in Germany, France, Spain, Italy, Canada, Mexico and Japan.

P/N 77017-01 R0296 © Ohaus Corporation 1993, 1996 all rights reserved.