1WMPD4003328

SAFETY PRECAUTIONSAll safety messages are identified by the following, "WARNING" or"CAUTION", of ANSI Z535.4 (American National Standard Institute: Product
Safety Signs and Labels). The meanings are as follows:
A potentially hazardous situation which, if not
WARNING
avoided, could result in death or serious injury.
A potentially hazardous situation which, if not
CAUTIONavoided, may result in minor or moderate injury.
This manual is subject to change without notice at any time to improve
the product.
Product specifications are subject to change without any obligation on
the part of the manufacture.
When using the scale, the following safety precautions should always
be followed.
WARNING
Repairs
Do not disassemble the scale. Contact your local A&D dealer if yourbalance needs service or repair.
Troubleshooting
If a problem has occurred and you cannot clear it, stop using the scale,place a notice on the scale and request service from the store where
you purchased the balance or from your local A&D dealer.
CAUTION
Conditions for Use and Ambient Temperature
The scale is a precision instrument. Avoid installing the scale in direct
sunlight, excessive dust, high humidity, high temperature, large temperaturefluctuations or magnetic fields, which may cause problems or malfunctions.
Drafts and vibration may cause excessive weighing errors.
Use the scale range of the -10°C to 40°C, with less than 85% R.H.
Operation
Avoid mechanical shock to the scale, especially to the weighing pan.
That could cause damage.
Avoid overloading that could cause damage to the scale.
The scale is not waterproof type. Water invading into the scale may
cause damage.
If the scale is not to be used for a long period of time, remove allbatteries from the battery compartment to avoid battery leakage.
Do not mix batteries made by different manufactures, or mix old andnew batteries. Replace all of the batteries at one time.
Use only the specified AC adapter for the scale (AC adapter is optional).
2Compliance with FCC rules
Please note that this equipment generates, uses and can radiate radio
frequency energy. This equipment has been tested and has been found tocomply with the limits of a Class A computing device pursuant to Subpart J
of Part 15 of FCC rules. These rules are designed to provide reasonable
protection against interference when the equipment is operated in acommercial environment. If this unit is operated in a residential area it may
cause some interference and under these circumstances the user would be
required to take, at his own expense, whatever measures are necessary toeliminate the interference. (FCC = Federal Communications Commission in the U.S.A.)

UNPACKING
Check whether all of the following items are included:

Carrying caseAC adapter

Main unit

Name plate

Operating instructions sticker

Please confirm that the AC adapter is correct foryour local voltage and receptacle type.

3

Color bar

Instruction manual

PARTS DESCRIPTION
Color bar

Weighing pan

Comparator
Display

ON:OFF key
MODE key
RE-ZERO key
ENTER key

Calibration
switch coverBattery cover(on the bottom)

STABLE indicator
Polarity

Weighing units

NET indicator

Battery indicatorZERO indicator
ON:OFF key
RE-ZERO key

MODE key
ENTER keyComparator

STABLE indicator
Polarity
NET indicatorZERO indicator
Battery indicator

Turns the scale power on/off.
Sets the display to zero. When the weight is within±2% of the weighing capacity to the zero point at thepower-on, the key will zero the scale. When the weightexceeds +2%, it will be subtracted as tare weight.
Changes the weighing units.
Used for setting the upper and lower limit value forthe comparator.
Shows results using LO, OK or HI (red, green andyellow) after comparing the weighing value to theupper and lower limit value.
Turns on when the weight reading is stable.
Shows the polarity of the weighing value.
Turns on when the net weight is displayed.
Turns on at the center of zero point. At the net weightzero point, both the ZERO and NET turn on.
Shows the remaining battery level in 3 steps when
operated by batteries.
4

PREPARATION
Installing or Replacing Batteries
Remove the battery cover and insert four new
Battery coverbatteries into the battery compartment, taking careof the polarities.
CAUTION Insert four batteries into thebattery compartment, taking“AA” size batteries
extreme care to that the polarities
plus and minus are observed.
 Replace all of the batteries at one time.
 Do not mix batteries made by different
manufactures, or mix old and newbatteries.
 Turning the scale over to replace the batteries may result in excessive
force being applied to the load cell and could damage the scale.
Take care not to apply too much force to the weighing pan.
 Be sure to lock the battery cover again after installing the batteries.
 The battery life differs depending on the ambient temperature.
 Remove all of the batteries from the battery compartment when thedevice will not be used for a long period of time or is only operated using
the AC adapter.

Connecting the AC Adapter
CAUTION
Rubber cap
 Verify that the correct AC adapter is
used.
Open the rubber cap and plug the AC
adapter into the AC adapter jack.
AC adapter
input jack5

AC adapter

WEIGHING
Basic Operation
1. Press the ON:OFF key to turn the scale on. The scale displays all
segments for a few seconds and shows zero.
Press the ON:OFF key again to turn the scale off.
2. Press the MODE key to select an appropriate weighing unit.
 When the key lock functions are activated, these operations cannot be made.
 The scale will power up with the same weighing unit as the one in use
when turned off last time.
3. Verify that the reading is zero. If not, press the RE-ZERO key to zero thedisplay. When you use a container for weighing, place an empty
container on the weighing pan and press the RE-ZERO key to zero thedisplay.
4. Place objects to be weighed on the weighing pan or in the container.
Wait for the STABLE “” to be displayed and read the value.

ErrorseOverload. Remove object from the weighing pan.
- - - - - The scale is out of zero range or unstable when powered on.
lb
Low battery. Replace batteries with four new ones immediately.
1Cale Calibration error. Incorrect calibration weight.
1err # Internal errors (# shows an error number). Request service.

6

COMPARATOR

The comparator is a function used to display comparison results using LO,
OK or HI (red, green and yellow) after comparing the weighing value to theupper and lower limit values specified beforehand. The relationship between
the LO, OK and HI is as follows.
LO＜lower limit value≦OK≦upper limit value＜HI Comparison conditions (Refer to “Cp” in “FUNCTIONS”)

・Not compared (Comparator functions disabled)
・Compares all data
・Compares all stable data
・Compares plus data, excluding near zero・Compares stable plus data, excluding near zero・Compares all data, excluding near zero・Compares all stable data, excluding near zero
“Near zero” means a range within ±4 digits (quadruple the minimum
display) from the zero point in grams.
 Nine upper and lower values respectively can be stored. (Memory number

is 1 to 9.) Numerical values of the upper and lower limit value are common for eachweighing unit, and the decimal point is ignored.
HT-300CL / HT-500CL
Upper limit value “02000”:“200.0 g” “200.0 ct”
Lower limit value “-01000”: “-100.0 g” “-100.0 ct”
HT-3000CL / HT-5000CL
Upper limit value “02000”:“2000 g”
“2000 ct”
Lower limit value “-01000”: “-1000 g” “-1000 ct”“20.00 N”“-10.00 N”“20.00 N”“-10.00 N”

 The scale does not make a judgment on whether the upper or the lower

limit value is larger. The scale does not result in an error even if the lower
limit value is larger than the upper limit value.
 When both the upper and lower limit value are set to zero, the comparator
function does not operate.
 When the weighing unit is lb, oz or catty, tael, the comparator cannot be
used.

7

How to Operate
1. Press the ON:OFF key to put the device in theweighing mode.
2. Press the ENTER key to display the currently
selected memory number.
3. Each time the MODE key is pressed, thememory number display will be switched.
The currently selected memory number isindicated by the “○” mark being lit.

Selecting the Memory Number

Start comparing using thesecond memory.

4. Press the MODE key to display the memory
number to be changed.
5. Press the ENTER key to change the memory
number. After displaying end , the device
returns to weighing mode.
6. Start comparing using the memory number changed to.

Confirming the Upper and Lower Limit Value
4. Press the MODE key to display the memory number to be confirmed.
5. By pressing the RE-ZERO key, LO is lit and the lower limit value of thememory number selected is displayed.
6. By pressing the RE-ZERO key, HI is lit and the upper limit value of thememory number selected is displayed.
7. To return to the memory number display, press the RE-ZERO key
8. To return to the weighing mode, press the ENTER key.（Start comparing
using the memory number displayed at this time.）

8

Confirming the second upper and lower limit value

Memory number
display

Lower limit

Upper limit

Start comparing using thesecond memory.

Setting the Upper and Lower Limit Value When the key lock function active, these operations cannot be used.

4. Press the MODE key to display the memory number to be set.
5. Press the RE-ZERO key to display the lower limit value.
6. Press the ENTER key at the lower limit value display to make LO and adigit of the value blink.
7. Set the lower limit value by using the following keys.
MODE：To change which digit is blinking.
RE-ZERO：To increase by +1 the value of the blinking digit.
RE-ZERO (Press and hold) ：To toggle between plus and minus.
8. Press the ENTER key to store the lower limit value. The scale thendisplays the upper limit value after displaying end.
9. Press the ENTER key at upper limit value display to make HI and a digitof the value blink.
10. Set the upper limit value by using the following keys.
MODE：To change which digit is blinking.
RE-ZERO：To increase by +1 the value of the blinking digit.
RE-ZERO (Press and hold) ：To toggle between plus and minus.
11. Press the ENTER key to store the upper limit value. The scale thenretunes to the memory number display.
12. To return to weighing mode, press the ENTER key. (Start comparing
using memory number displayed at this time.)

9Lower limit

Upper limit

Start comparing using
the second memory.

FUNCTIONSEntering the Function Settings
Turn the scale turned off and press the ON:OFF key while pressing the
RE-ZERO key. Then, the display will show the software version p-1.001(“1.00” is an example and may be a different number.) This is the starting
point of the function settings.

Key Operation
MODE：To select a function item.

RE-ZERO：To change the parameter of each item.

ON:OFF：To finish the operation and turns off the scale.

Start from the version display. By pressing the MODE key, function setting
items switch in the order shown in the figure below.

10

Items that include a “○” mark are currently set values.
If the RE-ZERO key is pressed when a function settings item is being
displayed, the setting values can be changed.
To store setting value changes (at a setting display with the “○” markturned off), press the MODE key. After
will be displayed.

end

is displayed, the next item

Setting the Weighing Units to Use
 The scale has the weighing units listed in the table below and the units to

be used only can be selected. Set the weighing units enabled or disabled
as appropriate.
 There are three types of taels, HK general/Singapore tael, HK jewelry tael
and Taiwan tael. But one of them can be selected.
 The order of units to be displayed is as in the table and it cannot bechanged.
・Display

Unit .

・Press the RE-ZERO key to proceed to weighing unit selection settings.
MODE：To select weighing units to be set.

RE-ZERO：To enable or disable the units displayed.
Units that include a “○” mark are units to be used.
Example)"g" is available.
"g" is unavailable.

・By repeatedly pressing the MODE key, the device stores weighing units
to be used after displaying
setting item.

end

11

, and then it returns to a function

Unit
g

Unit nameGram

Conversion to gram
1gtTola (India)

11.6638038 goz

Ounce (avoir)

28.349523125 gozt

Troy ounce

31.1034768 g

lb, ozPound ounce

See below.

Tael (HK general)

37.7994 g

Tael (HK jewelry)

37.4290 g

Tael (Taiwan)

37.5 gdwt

Pennyweight

1.55517384 g

ct

Metric carat

0.2 g

N

NewtonSee below.

tl

At setting mode

□ A pound contains 16 ounces.
lb and oz are not available for use with HT-300CL.
□ HK = Hong Kong. HK tael (general) is equal to Singapore tael.
□ A catty contains 16 taels.
□ Newton is a value calculated as follows:
Newton = (weight in gram) x (9.80665 m/s2) / 1000.

Initializing
When initializing the scale, the function settings are reset to factory settings,
and the upper and lower limit value (for all of the memories) of thecomparator are cleared to zero.
・Display init .
・Press the RE-ZERO key to light up the “○” mark.
・Press the MODE key while the “○” mark is lit to display end . The
settings are then reset to factory settings.
12

Function List
Items list
Automatic
power off
“poff”

Descriptions
If the scale is left on and the STABLE indicator is lit, the automatic
power off function turns power off after approximately 5 minutes.
0 Disables automatic power off function.
◆1 Enables automatic power off function.

Weighing unit
selection
Selects weighing units to be used.
“Unit”
Filter conditions Weighing stabilization levels/Response speed selections“Cond”
0 Fast response/Susceptible to vibration and drafts◆1 Medium response and effect level against
environment
2 Slow response/Strong resistance to vibration and drafts
Zero tracking
This function automatically track small zero drift caused bychanges in the ambient environment.
“trc”
0 Disables zero trucking function.
◆1 Enables zero trucking function.
Key lock
Misoperation prevention function“lock”Disables key lock (Upper and lower limit value◆0
settings and unit switching are available)
1 Enables key lock (Upper and lower limit value
settings and unit switching are unavailable)
Comparison
Operating conditions of the comparator
conditions“Cp”
0 Does not compare (Comparator disabled)◆1 Compares all data.
2 Compares all stable data.
3 Compares plus data, excluding near zero.
4 Compares stable plus data, excluding near zero.
5 Compares all data, excluding near zero.
6 Compares all stable data, excluding near zero.
Memory number Selects a memory number for comparison to be used whenselections
turning the power on.
“Cpn”
0 Does not compare (Comparator disabled).
◆1 Compares using the first memory.
2 Compares using the second memory.
9 Compares using the ninth memory.
◆ Factory settings
 “Near zero” means a range within ±4 digits from zero point in grams.

13

Items list
Descriptions
Comparison display Adjusts LED brightness for the comparator display.
LED brightness“Cpi”
0 Dark
◆1
2 Bright
Decimal point
Selects the symbol used for the decimal point.
“pnt”◆0 Dot（.）
1 Comma（,）
Initialization
Resets settings to factory settings.
“init”◆ Factory settings

14

CALIBRATION
When is Calibration Required?
Calibration may be required when the HT-CL
series compact scale was initially installed or
has been moved to another location.
Calibration switch
Calibration switch cover
Bottom of the scale

Calibration Preparations
Remove the calibration switch cover located on the bottom of the scale.
Press the ON:OFF key to turn the scale on.
Press the calibration switch while the scale is in the weighing mode.
Calwill be displayed.
When calibrating using a weight, select a calibration weight from thefollowing. The weight must be purchased separately by the customer.
HT-300CL
300 g ±0.01 g
HT-3000CL 3000 g ± 0.1 g
HT-500CL
500 g ±0.01 g
HT-5000CL 5000 g ± 0.1 g

Calibration Using a Calibration Weight
Zero Calibration
1. Press the RE-ZERO key whileCal

is displayed to display

Cal0 .

2. Confirm that the STABLE indicator is lit with nothing on the weighing pan,and then press the RE-ZERO key.
Zero point is calibrated and the scale displays Calf .
To only complete zero point calibration, press the MODE key while
1Calf is displayed.
Calibration ends and the scale automatically enters weighing mode.

15

Span Calibration
3. Place the calibration weight at the center of the weighing pan and press
the RE-ZERO key after confirming that the STABLE indicator is lit.
Calibration using a weight ends and the scale automatically entersweighing mode after displaying end .
4. Remove the weight from the weighing pan and press the ON:OFF key toturn the power off and end the calibration.

Setting the Gravity Acceleration
The scale is calibrated with the gravity acceleration value 9.798 m/s2 at thefactory. When the gravity acceleration at your location is different value, you
should calibrate the scale using a calibration weight. But if the calibration
weight cannot be prepared, change the gravity acceleration of your scale tothe value of the area where the scale is used. See “The Value of Gravity
Acceleration at Various Locations” of this manual.
1. Press the MODE key whileCal

is displayed to display

9.798 .

2. Press the RE-ZERO key to make the digit to be changed blink.
Readjust the gravity acceleration value for the scale to be used using thefollowing keys.
MODE：To change which digit is blinking.

RE-ZERO：To increase by +1 the value of the blinking digit.

3. Press the RE-ZERO key while pressing and holding the MODE key, andrelease the MODE key while keeping the RE-ZERO key depressed. The
scale automatically enters Cal
display after displaying end .
4. Press the ON:OFF key to turn the power off and end the operations.

16

Restoring the Calibration Data
The zero calibration, span calibration and gravity acceleration values can berestored to the factory settings values.
Ex. The scale was calibrated with wrong weight, but there is no correct
weight. The values above can be reset to the factory settings.
Cal

1. Press the MODE key twice while

is displayed to display

Clr.

2. Press the RE-ZERO key to display Clrno .
To switch to Clrgo display, press the RE-ZERO key again.
To reset the settings to factory settings, proceed to the next step while
1Clrgo is displayed.
3. Press the RE-ZERO key while pressing and holding the MODE key, andrelease the MODE key while keeping the RE-ZERO key depressed. The
calibration value is returned to factory settings, and the scale
automatically enters Cal
display after displaying end .
If performing Step 3 while Clrno is displayed, the scale will return to
1Clr
without returning the calibration value to factory settings.
4. Press the ON:OFF key to turn the power off and end the operations.

17

SPECIFICATIONS
Model
HT-300CL HT-3000CL HT-500CL HT-5000CL
Weighing capacity
310 g
3100 g510 g5100 gMinimum display ”d”
0.1 g
1g
0.1 g
1g
Non-linearity± 0.2 g±2 g
± 0.2 g±2 g
Repeatability
0.1 g
1g
0.1 g
1g
(Standard deviation)
Span drift± 0.015% / °C (5°C to 35°C)
Operating-10°C to 40°C / 14°F to 104°F, Less than 85% R.H.
temperature range /(Non-condensing)humidity
Display
7 segment LCD (Character height 13.5 mm)
Display update
Approximately 10 times per second
Power supply
4 x "AA" batteries (R6P / LR6) or AC adapter
Battery life
Approx. 450 hours (When using at 23°C, withcomparator disabled and using alkaline batteries)
Approx. 220 hours (When using at 23°C, withcomparator always enabled (results in red) and usingalkaline batteries)* The battery life differs depending on manufacturer,
usage and storage conditions.
Pan size
132(W) x 130(D) mm
Dimensions
136(W) x 195(D) x 47(H) mm
Mass
Approx. 470 g (Excluding batteries)
Calibration weight
300 g±0.01 g 3000 g±0.1 g 500 g±0.01 g 5000 g±0.1 g
Accessories
Carrying case, name plate, color bar (three colors),
AC adapter, operating instructions sticker, instruction
manualOptionStainless steel pan (HT-10)

18

Other weighing units
Model
Weighing capacityt (tola)Minimum display
Weighing capacityoz
Minimum display
Weighing capacity
ozt
Minimum display
Weighing capacitylb,ozMinimum display
tl (tael, HK Weighing capacity
general)Minimum display
tl (tael, HK Weighing capacity
jewelry)
Minimum display
tl (tael,
Weighing capacity
Taiwan)Minimum display
Weighing capacity
dwt
Minimum display
Weighing capacity
ct
Minimum display
Weighing capacity
N
Minimum display

HT-300CL HT-3000CL HT-500CL HT-5000CL
26.50
265.0
43.70
437.0
0.01
0.1
0.01
0.1
10.90
109.0
17.90
179.0
0.01
0.1
0.01
0.1
9.90
99.0
16.30
163.0
0.01
0.1
0.01
0.1
–
6.8 lb
1.1 lb11 lb–
0.1 oz0.01 oz
0.1 oz8.20 5.1 catty
13.40 8.4 catty
0.01
0.1 tael
0.01
0.1 tael
8.20 5.1 catty
13.60 8.5 catty
0.01
0.1 tael
0.01
0.1 tael
8.20 5.1 catty
13.60 8.5 catty
0.01
0.1 tael
0.01
0.1 tael
199.0
1990
327.0
3270
0.1
1
0.1
1
1550.015500
2550.0
25500
0.5
5
0.5
5
3.00
30.0
5.00
50.0
0.01
0.01
0.01
0.01

The Value of Gravity Acceleration at Various Locations
Amsterdam
AthensAuckland NZ
Bangkok
Brussels
Buenos Aires
Calcutta
Cape Town
ChicagoCopenhagen
CyprusDjakarta
Frankfurt
Istanbul
HavanaHelsinki
KuwaitLisbonLondon(Greenwich)
Los Angeles

9.813 m/s2
9.807 m/s2
9.799 m/s2
9.783 m/s2
9.811 m/s2
9.797 m/s2
9.788 m/s2
9.796 m/s2
9.803 m/s2
9.815 m/s2
9.797 m/s2
9.781 m/s2
9.810 m/s2
9.808 m/s2
9.788 m/s2
9.819 m/s2
9.793 m/s2
9.801 m/s2

MadridManilaMexico City
Milan
New York
Oslo
OttawaParis
Rio de Janeiro
Rome
San Francisco
Singapore
Stockholm
SydneyTaipeiTokyo
Vancouver, BC
Washington DC

9.800 m/s2
9.784 m/s2
9.779 m/s2
9.806 m/s2
9.802 m/s2
9.819 m/s2
9.806 m/s2
9.809 m/s2
9.788 m/s2
9.803 m/s2
9.800 m/s2
9.781 m/s2
9.818 m/s2
9.797 m/s2
9.790 m/s2
9.798 m/s2
9.809 m/s2
9.801 m/s2

9.812 m/s2

Wellington NZ

9.803 m/s2

9.796 m/s2

Zurich

9.807 m/s219

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
Fax: [81] (3) 5391-6148

A&D ENGINEERING, INC.
1756 Automation Parkway, San Jose, California 95131, U.S.A.
Telephone: [1] (408) 263-5333
Fax: [1] (408)263-0119

A&D INSTRUMENTS LIMITED
Unit 24/26 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire OX14 1DY United Kingdo
Telephone: [44] (1235) 550420
Fax: [44] (1235) 550485

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32 Dew Street, Thebarton, South Australia 5031, AUSTRALIA
Telephone: [61] (8) 8301-8100
Fax: [61] (8) 8352-7409

A&D KOREA Limited

한국에이.엔.디(주)서울특별시 영등포구 국제금융로6길33 (여의도동) 맨하탄빌딩 817 우편 번호 150-749( 817, Manhattan Bldg., 33. Gukjegeumyung-ro 6-gil, Yeongdeungpo-gu, Seoul, 150-749 Korea )전화: [82] (2) 780-4101
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OOO "ЭЙ энд ДИ РУС"121357, Российская Федерация, г.Москва, ул. Верейская, дом 17( Business-Center "Vereyskaya Plaza-2" 121357, Russian Federation, Moscow, Vereyskaya Street 17 )тел.: [7] (495) 937-33-44
факс: [7] (495) 937-55-66

A&D INSTRUMENTS INDIA PRIVATE LIMITED( 509, Udyog Vihar, Phase- , Gurgaon - 122 016, Haryana, India ): 91-124-4715555: 91-124-4715599
BackCover 1WMPD4000058M .

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