RoHS Compliant

READ THE INSTRUCTION MANUALINSTRUCTION

MANUAL

ＭＡＮＯＳＴＡＲ ＧＡＧＥ
ＷＯ７０

ＴＲ－ＷＯ７０－Ｅ０８〒 653-0031

1 - ２ - ３ , Ni s h i - s h i r i i k e - c h o , N a g a t a - k u , K o b e , J a p a n
TEL：078-631-6000
FAX：078-631-6020

TABLE OF CONTENTS

PAGE

INTRODUCTION・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
Ⅰ． PRECAUTIONS・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
Ⅱ． SPECIFICATIONS OF MANOSTAR GAGE WO70・・・・・・・・・・・・・・・・・・・・・・・・・ 2
Ⅲ． INSTALLATION
1． Caution of service condition・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4
2． Installation of WO70FV・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4
3． Installation of WO70PV・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5
4． Position of connectors and polarity of high and low pressure side・ ・・・・・・・・・・・ 5
5． Zero point setting・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6
6． Setting of flag pointer・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6
7． Pressure of measurement and connection of piping・・・・・・・・・・・・・・・・・・・・・・・・ 6
8． Installation position・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6
9． Connectors and piping・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7
10． About tightening piping connector・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 8
11． Compatibility of connectors・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 8

Ⅳ． GENERAL PRECAUTIONS
1． Prohibition of common piping・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9
2． Prevention of clogged piping due to drain・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9
3． Measurement of high temperature gases・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9
4． Errors caused by long distance piping・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9

Ⅴ． LINE PART ACCESSORIES・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 10
Ⅵ． PERIODIC INSPECTION・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 11
Ⅶ． PRODUCT WARRANTY・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 11

INTRODUCTION
Thank you very much for purchasing of "MANOSTAR GAGE WO70".

!
CautionTo ensure your safety in using this instrument :・ Be sure to read the instruction manual carefully before using the instrument so that you
can use it properly.
Wrong use may result in failure of the instrument and lead to its damage and accident. Thismanual should be kept in a proper place so that you can refer to it any time you need.

Ⅰ． PRECAUTIONS! Warning・ Do not use this instrument at the place where corrosive gas is present.
The instrument is not corrosion resistance construction. Measuring corrosive gas may corrode thereceiving element and housing material of the instrument. It is expected that corrosive gas leaked outof the instrument will harm a person.
・ Do not apply the pressure to the instrument more than it can withstand.
The diaphragm and the retainer are broken if the pressure exceeding withstanding pressure of thepressure receiving element is applied to the instrument. The case body and the transparent cover ofthe instrument are broken if the pressure exceeding withstanding pressure of the instrument body isapplied to the instrument.
・ The instrument is measurable for air and non-corrosive gas only.
The machine is exclusive use of dry air (90％ RH or less). Using measuring the water or oil it may bedamaged and causes the accident.
・ Avoid using where the instrument is subject to many vibration and impact.
Using the instrument where intensified vibration and impact may be damaged the instrument. It is
expected that gas leaks of the instrument which harms a parson.
・ Do not exceed rated surrounding temperature, humidity and altitude in use.
Using the instrument by exceeding rated surrounding temperature and humidity and altitude it may bedamaged and cause the accident.
・ Do not disassemble or reconstruct the instrument.
It may void the warranty.

! Caution・ As to where to install and how to install this instrument, be sure to follow the instruction manual
provided so as to ensure a proper method.
・ Use the instrument indoors.
・ In case of not being installed in dry and well-kept clean locations, the instrument must be enclosed inbox of min. Protection degree IP54.
・ Do not use organic solvent for cleaning.
Use a cloth soaked with water-diluted neutral detergent to wipe the surface of a product. Using oforganic solvent causes damage on the surface.
・ Dropping the product
If the product is dropped onto a desk or floor, not only its exterior but also interior mechanism isbroken.

1

Ⅱ．SPECIFICATIONS OF MANOSTAR GAGE WO70
Types :

Pressure range code

ＷＯ７０ Ｆ Ｖ １００ Ｄ （example）
Unit
Pressure range
Piping connector
Type

Ｄ
Ｅ

Ｐａ
ｋＰａ

Max. value of scaleＶ

For vinyl or plastic tube

Ｆ
Ｐ

Surface installation type
Panel installation typePressure ranges and characteristics :Standard installation
position（refer to p.6）

Accuracy(at 20 ℃ )Installation position fromupward horizontal tovertical is available.

± 2.5 ％ FS

Pressure ranges

Pressure
range codes

Pa

kPa

100 D

0 ～ 100（ 0 ～ 0.1）

200 D

0 ～ 200（ 0 ～ 0.2）

300 D

0 ～ 300（ 0 ～ 0.3）

500 D

0 ～ 500（ 0 ～ 0.5）1000 D0 ～ 1000

1E

0～1

2E

0～2

3E

0～3

5E

0～5

+-100 D-100 ～ +100

( -0.1 ～ +0.1 )+-200 D-200 ～ +200

( -0.2 ～ +0.2 )+-300 D-300 ～ +300

( -0.3 ～ +0.3 )+-500 D-500 ～ +500

( -0.5 ～ +0.5 )（ ) : Out of standard

Pressure measuring method : Measuring differential pressure
Flag pointer color : Red
Pressure receiving element : Diaphragm (silicone rubber)
Gas to be measured : Air or non-corrosive gas (not liquid)
Scale indicating angle : Approximately 90 °Medium and ambient : - 10 to + 50 ℃ (no freezing)
temperature
Ambient humidity : 90 ％ RH or less (no dewing）
Withstanding pressure : 50 kPa
of instrument bodyWithstanding pressure : 20 kPa
of receiving element2Withstanding vibration : 5 to 10 Hz Amplitude : 10 ㎜，
10 to 50 Hz Accelerating : 39 m/s2 (each two hours on triaxial directions）
Withstanding impact : 100 m/s2 (each six times on triaxial directions)
Material of the outer : Polycarbonate and polyamide
caseApplicable piping : 1. Vinyl, plastic tube or rubber tube (I.D. 6)･･･	The resinous piping connectors (installed) for vinyl or plastic tube.
2. Metal tube (O.D. 6 ± 0.1)･･･	Metal type piping connector (option) is needed.
3. Hard plastic tube (O.D. 6 × I.D. 4)･･･	Metal type piping connector (option) and inner sleeve set (XIN6 × 4) areneeded.
Polarity of piping : ・ The piping connector indicated red color is high pressure side and blue color is low
pressure side.
connector・E nabling to convert the polarity by changing piping connectors of high pressure side
for low pressure side.
Mass : Approximately 200 g
Accessory :WO70FVNil

WO70PVOne set of installation nuts

Conformed standards : RoHS Directive (2002/95/EC)(Products in compliance with the RoHS carryproduct itself and on each package.)Gor ［［G］］ mark on the label of“The withstanding pressure of the pressure receiving element” means ；The max. pressure under which the diaphragm withstands distortion or breakage (withstand single
pressure) The single pressure acting on either H or L side.
“The withstanding pressure of the instrument body” means ；The max. pressure under which the instrument body withstand safely without breakage (double side
withstanding pressure) The pressure acing on both high and low sides.
Note ： The withstanding pressure of the instrument body is not the pressure under which theairtightness of the instrument is guaranteed．

!
CautionIf the pressure exceeding the withstanding pressure of the pressure receiving element is applied toboth L and H sides at the same time, the imbalance of the ultimate pressure arising from the differencein the capacity between the L side and H side chambers or tube. It may cause the pressure exceeding
the withstanding pressure and the breakage or distortion of the diaphragm.
When applying the pressure exceeding the withstanding pressure of the diaphragm from both H and L
sides at the same time, increase the pressure slowly and gradually. Likewise, in relieving the pressure,decrease the pressure slowly.

3

Ⅲ． INSTALLATION
Before using this instrument, make sure if it is the type that you requested and meets the demand of theenvironment, pressure and piping conditions where it is used, by specification.

1. Caution of service conditiona) Do not use the instrument in a place subjected to direct sunlight, vibration or shock, or excessive
moisture. In particular, vibration and shock to the instrument should shorten its life.
b) Use under the medium and ambient temperature from - 10 to + 50 ℃ .
c) T he instrument is not waterproof. Do not use it in a place subjected to rain, or other splashing water.
d) The instrument cannot be installed outdoors without an appropriate protection. If outdoor installing isrequired, the instrument should be housed in a box of drip-proof type for outdoor use.
e) In installing the instrument, select the place where the ground is smooth and flat.

2. Installation of WO70FVa) Panel cut size
In case of side piping
3×φ5 holes or
3×M4 holes tapped
3×120ﾟ segmentation

φ95±0.3

With VTWith MT

With VR

With MR

Panel cut size.

In case of rear piping

32.5

2×φ18 holes
3×φ5 holes or
3×M4 holes tapped
3×120ﾟ segmentation

φ95±0.3

With VTWith MT

Panel cut size.
3×φ5 holes or
3×Ｍ4 holes tapped
3×120ﾟ segmentation

32.5

55

（long hole）

R9

With VR

With MR

Note 1) W hen you install MT, VR
and MR connector on backview piping connector port,
use the piping adaptor onback view (KGA70FBA-L,
KGA70FBA-H).
It is necessary to avoid
interference with piping
connectors and panel and tohelp put a locking spanner atthis adaptor as a spacer.
2) MT, VR and MR connectors
are sold separately as“connector for replacement”(refer to p. 7)

φ95±0.3

Panel cut size.

b) How to install

Mount installation feet for the instrument by screws as shown in the figure below.

Panel
φ5 holesＭ4 screwＭ4 screw

Spring washer

Spring washer

Plain washer

Plain washer

Plain washer
M4 nutFor nut tightening

Panel
M4 tap!

For machine screw tightening

4

CautionTighten the piping
connectors with the torqueof 1 N･m.
Do not apply excessive
torque more thannecessary, otherwise it
will damage the instrument
body.

3. Installation of WO70PVa) Panel cut size
4×φ4 holes

75±0.375±0.3The same panel cut size canbe used for gages with MT, VR
and MR connectors available
separately.

φ87±0.3

Panel cut size!
Cautionb) How to install･I f y o u i n s t a l l t h e
instrument on the panel
without spacer nuts, theinstrument body will be
broken.

M3 nutSpring washer
Plain washer
Max. thickness
installed panel 5 mmspacer nut

1. R emove four sets of a M3 nut,a spring washer and a plain
washer from the packing bag.
(Do not remove spacer nuts
from set screws.)･T ighten the installation
M3 nut with the torquefrom 0.5 to 0.6 N ・ m.
Do not apply excessive
torque more thannecessary, otherwise
it will damage theinstrument body.

2. After installing the instrument
body on the panel, set a plain
washer and a spring washer.
Then tighten a M3 nut from theback side of panel.

4. Position of connectors and polarity of high and low pressure sidea) The piping connector installed on side view

Seal plug

ＬＯＷ
ＨＩＧＨ

Seal plug

About side connector ports of the instrument body, there is no distinction between high pressure side andlow pressure side. The polarity of the high and low pressure side is determined by the piping connector
attached. In the model WO70, the polarity can be inverted by switching the piping connector each other.
The high pressure side and the low pressure side are identified with red and blue color respectively.
b) The piping connector installed on back view
Low pressure
side (blue connector)

Seal plug

ＬＯＷ

Seal plug

ＨＩＧ Ｈ

High pressure
side (red connector)

WO70 model polarity of back view connector is decided to high and low puressure side.
In case of installing the connectors to back view connector ports, install the connector of high pressure sidein the port which the sign of “HIGH” is displayed and the connector of low pressure side in the port which
the sign of “LOW” is displayed.

!
CautionＯ-ringＯ-ring・ When removing connector, do not allow to drop O-ringat the deep end of side connector ports. (at the endof back view connector port, O-ring is not attached).
・ W ith seal plugs, be sure to close the two piping
connector ports where connectors are not attached.
55. Zero point setting

Flag pointerSet the zero point of the gage or the pressure transmitter by turning thezero adjuster, after installing them in the position which they are used.
Before setting the zero point, be sure to open the high and low pressure
piping connector to atmosphere, or stop the equipment to run low theresidual pressure to zero.

Pointer

Setting device ofthe flag pointer6. Setting of flag pointerSetting deviceof zero pointerThe flag pointer is used for indicating a predicted values or a limit values.
Set it at the predicted or limit values.
If you turn the setting device of the flag pointer clockwise, the flag pointer moves counter-clockwise.

7. Pressure of measurement and connection of pipinga) Measurement of positive pressure
Connect the tube to the high pressure side piping connector (indicated by red color or letter H). The
lower pressure port (blue or L) should opened to atmosphere, but do not remove the piping connector.
b) Measurement of negative pressure
Connect the tube to the low pressure side piping connector (blue or L). The high pressure port (red or H)
should be opened to atmosphere, but do not remove the piping connector.
c) Measurement of differential pressure
Connect the tube from the high pressure piping connector to the high pressure port (red or H) and fromthe low pressure piping connector to the low pressure port (blue or L).

!
CautionM easurement of single pressure using an instrument with zero point center range.
Connect the tube to the high pressure side piping connector (red or H). In this case again, leavethe  piping connector attached to the low pressure side, which is opened to atmosphere. The single
pressure is as displayed on a zero point center scale (+-).

8. Installation position
Pressure range specified Vertical or Upward horizontal that is standard installation position.
All ranges
Vertical planebVerticalion
sit 5 °
po 13
on rd
ati watal n
Ins dow
gle
an

a

10 °

Downward horizontal

Horizontal plane

Upward horizontal

20
°

a

Specified installation positionb

Following installation position is available

Standard installation position

In ordering out of above mentioned installation position, please order us or our agency beforehand. It must be
adjusted before the factory shipment.

69. Connectors and pipinga) V T connector for vinyl or plastic tube, resinmade [ installed ]These are connectors for vinyl, plastic orrubber tubes. Be sure to use I.D. 6 andthickness of 1 mm or more. However,the vinyl or plastic tube (2 or more wall
thickness) with enough withstanding pressure(including vacuum pressure) is required when
the instrument range or the line pressure ishigher more than 50 kPa.
b) MT connector for metal tube, brass-made[ option ]This connector can be connected to the metal
tube made from copper, aluminum and so on.
(O.D. 6, the tolerance ± 0.1, ring joint type)In case of connecting with stainless tube, use
MTW connector.
When this connector is connected to hardplastic tube (O.D. 6, I.D. 4), remove thebrass-made sleeve and use the resinous inner
sleeve set (XIN6 × 4) that is the optional
accessory. (Fig. Ⅲ -2）c) VR rotary connector for vinyl, plastic tube,
brass-made [ option ]These connectors are rotary elbow type andcan be connected to vinyl, plastic and rubber
tube of I.D. 6.
d) Piping adaptor on back view, brass-made[ option ]When you install MT, VR and MR connector
on back side port of WO70F type, thisadaptor is necessary to avoid interferencewith connectors and panel.
It is also necessary as a spacer to use alocking spanner at this adaptor.
e) Inner sleeve set [ option ]You need this to connect hard plastic tube
(O.D. 6, O.D. 4) to the connectors for metal
tube. (Fig. Ⅲ -2）

Low pressure side
VT connector

High pressure side
VT connector

Product code KGA70VT-L-P

Product code KGA70VT-H-P

Low pressure side
MT connector

High pressure side
MT connector

Product code KGA70MT-L

Product code KGA70MT-H

Low pressure side
VR connector

High pressure side
VR connector

Product code KGA70VR-L

Product code KGA70VR-H

Low pressure side backview piping adaptor

High pressure side backview piping adaptor(for FV type)(for FV type)

Product code KGA70FBA-L

Product code KGA70FBA-H

Inner sleeve set forplastic tubeᵧᶌᶌᶃᶐίᶐᶃᶑᶇᶌᵇᵱᶊᶃᶃᶔᶃίᶐᶃᶑᶇᶌᵇᵮᶊᵿᶑᶒᶇᶁᴾᶒᶓᶀᶃ

Product code XIN6X4(Fig. Ⅲ -1）

7

10. About tightening piping connectora) Tightening torque
The plug sealing between the piping connector port of the
instrument, the piping connector, and the sealing plug isachieved by O-rings. Apply the tighting torque specified
below when tightening the piping connector and sealingplug. The instrument body will be broken if excessive
torque is applied.

Spanner for tightening・ Piping connector for
vinyl or plastic tube and metal tube ････ 1 N ・ m・ Seal plugs・・・・・・・・・・・・・・・・・・・・・・・・・・ 0.5 N ・ m
Locking spannerb) Tightening with locking spanner
Always use locking spanner to tighten the ring joints for
MT connectors (for metal tube) or MR connectors (rotatingtype for metal tube) and be careful not to apply thetighting torque directly to the instrument body.
The locking spanner is also needed to ease the cap nuts.
（Fig. Ⅲ -3）(Fig. Ⅲ -2）!

11. Compatibility of connectors

CautionThe piping connector of Manostar gages WO81, WO70, andMS65 are not compatible with each other.Make sure to use thededicated connectors of Manostar gage WO70.

8Cap nut
for metal tube

Do not directly tightening
a cap nut without alocking spanner, or it willcause the damage to portsof connectors at the main
body of the instrument.

Ⅳ． GENERAL PRECAUTIONS
1. Prohibition of common piping

Independent piping○
Room A

Room B

WO70

WO70

Common piping×
Passageway

Passageway

Piping each of pressure detectors and pressure receiving
instruments tube exclusively dedicated for it, and do notconnect the piping commonly with the adjacent system asshown in the right figure.
Common piping causes measurement error because thepressure of each system interferes.

Room A

Room B

WO70

WO70

2. Prevention of clogged piping due to drain・ If drain remains within the line, it causes measurement
error. Be sure to install the pressure receiving
instrument above the pressure outlet port of thepressure detector and arrange the line so that the drainwater should not remain in the slack piping.
･If the arrangement mentioned above in not possible,
install a drain tank within the line as shown in the rightfigure and clean it once in a while.
･A fter the cleaning of the tank, check that the air
tightness is fully kept.

Installation diagram of drain tank
Gage

Drain tankDrain

3. Measurement of high temperature gases
In the pressure measurement of high temperature gas,use the pressure detector (pitot tube) made of the heatproof metal (such as stainless steel), and connect it withthe pressure receiving instrument through a metal tube
which is long enough to cool down the high temperaturegas.

4. Errors caused by long distance piping
The speed of response is delayed when the product isused for remote monitoring.
In such application, the I.D. of the connection tube
should be as large as possible.
The time constant is almost inversely proportional tothe inner cross sectional area of the piping. (refer to thediagram below)
If the piping conditions of the high and low pressure side
are significantly different, the difference in the piping
resistance between high and low puressure side causes
the difference in pressure transmission time, and themeasurement becomes inaccurate.
Time constant: The time required that the indication of
an instrument reaches about 63 ％ of the full scale.
WO70 : Relationship between piping length and time constant (tube I.D. 6）
20Time constant （minute）

15
Pressure range

100～100 Pa
0～200 Pa
0～300 Pa
0～500 Pa
0～1000 Pa

5

0

0

50

100

150
Piping length ℓ

9

200
（m）

Ⅴ． LINE PART ACCESSORIES
Pulsating protector

Outline drawing for pulsating protector

φ7

For vinyl or plastic tube

φ7

In case of strong turbulent flow of medium air thatcauses abnormal movement of pointer and output oftransmitter, installing a pulsation protector applicablepressure range one each on H side and L side on
the piping way between pressure sensor and the
instrument.

75

For metal tube
Applicable range (max. value)
Product code
For vinyl or plastic tube For metal tube
Pa, kPa
RS-VT6-02
RS-MT6-02
200 Pa or less
RS-VT6-03
RS-MT6-03
300, 500, 1000 Pa
RS-VT6-04
RS-MT6-04
2, 3, 5, 10 kPa
RS-VT6-06
RS-MT6-06
20 kPa or more

Outline drawing for corrosive gas absorber
For vinyl or plastic tube

φ7

In case of measurement of gas which corrodes thematerial of the instrument, installing that corrosive gas
absorber one each on H side and L side each on piping
way between pressure detector prolong instrument life.

φ7

Granular activated carbon

φ27

Corrosive gas absorber

150

For metal tube

Product code FG-VT6-S

Product code FG-MT6-S

Outline drawing for instrument air filter
For vinyl or plastic tube

For metal tube

Product code AF-VT6

Product code AF-MT6

50
Hex.17

For metal tube

φ6±0.1For vinyl or plastic tube

φ7

For measurement of dusty air, install air filter for
instrument one each on H side and L side in the middle ofpiping between the pressure detector and the instrument.
According to the condition of clogging inside filter, carryout periodically replacement of filter element as well as
cleaning of the pressure detector and piping.

Hex.17

φ7

Air filter for instrument

Hex.1238

Outline drawing for T joint
39

For vinyl or plastic tube

T joint

For vinyl or plastic tube
Product code TVT6-4-6 For branching different I.D. 6 and 4
Product code TVT6-6-6 For branching the same I.D. 6 and 6
10

18.5
2×φ7

18.5

39

φ5.5

Product code TVT6-4-6

3×φ7

For metal tube

φ6±0.1For vinyl or plastic tube

Product code TVT6-6-6

Ⅵ． PERIODIC INSPECTION
Generally speaking, it is important not to exert external stress to keep life and reliability of the instrument for along time.
Proper use of this instrument will ensure its faultless service over many years without any necessity of periodic
lubrication.
However, it is recommended that it is subjected to periodic inspection (calibration) once a year.

Ⅶ． PRODUCT WARRANTY
Warranty Period
This product warranty is valid for one year from the date of delivery to a place specified by an ordering party who
has transacted directly with Yamamoto Electric Works Co., Ltd.
Coverage
If a product breaks down due to a reason for which we are responsible during the warranty period and you return
the product to us, we will either repair or replace the product free of charge.
This warranty does not cover:(1) U sage of the product under any inappropriate conditions or environment contrary to what is described in our
product catalog, specifications or manual.
Handling or usage of the product other than as described in our product catalog, specifications or manual.
(2) Breakdown due to a reason other than a fault within our product.
(3) Any product that has been modified or repaired by a party other than us.
(4) A ny breakdown due to a reason that was not foreseeable based on scientific and technical standards applied at
the time of shipment.
(5) Any breakdown due to a reason not attributable to us such as a natural calamity or other disaster.
These terms of warranty represent our entire liability with respect to the product, and we shall have no liability
for any other loss arising in connection with a breakdown of the product.
*This product warranty is only valid within Japan.
This document is a translation from the original Japanese version, and the original Japanese version has priority
over this translation.
Be sure to refer to the original Japanese for the details of this warranty.

<Prior notice>
The specifications and description of the product explained in this instruction manual may be subject tochange without prior notice because of modification and the like.

11