RoHSS

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READ THE INSTRUCTI
ION MANUUAL BEFORRE USING

INSTRUCTION MANUAL

M A N O ST A R

G A G E

WO71

No. TR-WO71-E06

1--2-3,Nishi-shiiriike-cho,Naggata-ku,Kobe,,Hyogo 653-00031 JAPANTEL. +81-78-631-6+
6000 FAX. +881-78-631-60
020

TABLE OF CONTENTS
PAGE

INTRODUCTION

1

Ⅰ．PRECAUTIONS ......................................................................................................... 1

Ⅱ．THE NAME OF EACH PART ............................................................................. 2

Ⅲ．INSTALLATION
1. Caution of service condition........................................................................ 3
2. Installation of type N ...................................................................................... 3
3. Installation of type R ...................................................................................... 4
4. Installation of type FV, type FS ................................................................. 4
5. Installation of type PV, type PS................................................................. 4
6. Installation position ......................................................................................... 5
7. Installation of connectors and polarity of high and low pressure sides ........... 5
8. Accessory for WO71 ...................................................................................... 7
9. Accessory for type FV, type PV, type FS, type PS ........................... 7
10．Zero point setting ........................................................................................... 8
11．Setting of flag pointer ................................................................................... 8
12．Pressure of measurement and connection of piping.......................... 9

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．PERIODIC INSPECTION .................................................................................... 10

Ⅵ．PRODUCT WARRANTY ..................................................................................... 10

INTRODUCTION
Thank you very much for purchasing of "MANOSTAR GAGE WO71".
To ensure your safety in using this instrument :△！

Caution・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 the instrument where flammable gas is present.
The instrument is not explosion-proof. Do not use instrument in the circumstance where flammable gas ispresent or with flammable liquid. It may cause explosion.
・Do not use the 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 which leaks outof the instrument may cause harm to humans.
・Do not apply the pressure to the instrument more than it can withstand.
The diaphragm and the retainer break and may cause injury and disaster. The body itself breaks and may
cause injury and disaster, if the pressure which exceed the withstanding pressure of instrument body isapplied.
・The instrument is measurable for air and non-corrosive gas only.
When it is used to measure the pressure of water or oil, it breaks. It may also cause injury and disaster.
・Avoid using the instrument in places subject to large vibrations and shocks.
When the instrument is used in places subject to large vibrations and shocks, it may lead to performancedegradation, breakdown, injury and disaster.
・Use within the operating temperature and humidity range.
When the instrument is used out the operating temperature and humidity range, the body breaks and may
cause injury and disaster.
・Do not disassemble or reconstruct the instrument.
Disassembly and remodeling are not only void of the warranty and lead to performance degradation or
breakdown, but also cause injury and disaster.

△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.
・Use in a dry and clean place indoors.
Using in a place exposed to direct sunlight or in a humid place may cause deterioration or breakdown.
・Do not use organic solvent for cleaning.
Use a cloth soaked with water-diluted neutral detergent to wipe the surface of a product. Using organic
solvent causes damage on the surface.
・Do not drop the product.
Product is a precision instrument. If you drop the product, there is a possibility that not only the exterior,
but also the interior mechanism may damage.
・Do not pull the pipe with a strong force.
If you pull the pipe with a strong force, there is a possibility that the pipe cap may break.

1

Ⅱ．THE NAME OF EACH PART・Type Ｎ

Setting deviceof zero point

High pressure
side rotary piping
connector

Scale plate
Position guide ofcustom seal

Low pressure
side rotary piping
connector

Pointer

Installation plate

・Type R

Setting deviceof zero point

Scale plate

Installation screws
High pressure
side rotary piping
connector

Position guide ofcustom seal

Low pressure
side rotary piping
connector

Pointer・Type FV

Setting deviceof zero point

Installation plate

Scale plate

Seal plug

Position guide ofcustom seal

Low pressure side
piping connector(Blue)High pressure side
piping connector(Red)
Seal plug

Pointer・Type PV

Setting deviceof zero point

Scale plate

Installation screws
Seal plug

Position guide ofcustom seal

Low pressure side
piping connector(Blue)

PointerHigh pressure side
piping connector(Red)・Type FS

Setting deviceof zero point

Installation plate

Scale plate

Seal plug

Position guide ofcustom seal

Low pressure side
piping connector(Blue)
Pointer （Black）

High pressure side
piping connector(Red)
Seal plug

Flag pointer （Red）

Setting device of the flag pointer・Type PS

Setting deviceof zero point

Scale plate

Installation screws
Seal plug
Low pressure side
piping connector(Blue)

Position guide ofcustom seal

Pointer （Black）

Flag pointer （Red）

High pressure side
piping connector(Red)

Setting device of the flag pointer2

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) The instrument is not waterproof. Do not use it in a place subjected to rain, or other splashing water.
d) In installing the instrument, select the place where the ground is smooth and flat.

2. Installation of type Na）In case of wall surface installed
Use screws-set attached

Panel cut size
2×φ4
or 2×M3

100±0.3

H

Ｍ4 internal
threadUse in thethrough holeＭ3 screws※ We recommend that you
install on the wall after
you install the piping to
the connector.
Because piping space isnarrow(Drilling holes)
Ｍ3 nuts(Ｍ3 internal thread)Nuts unnecessary

Installation to the wall with M3 screws.※b）In case of panel embedded installed
Use screws-set attached

Panel cut sizeH

φ87±0.3
Installation panel
thickness within 5

Ｍ4 screws
Ｍ4

Screw M4 screws to the installation
panel to make the product stable.

＜Desorption method of an installation board＞
The prongs on the mounting plate are held by the gage.
To remove the plate, use a flat head screwdriver gently to lift thebottom of the U-shaped groove on the plate, and slide the plate
downwards. To attach the plate, align the prongs with theindentations on the back of the gage, and slide the plate upward
to engage.

△！

CautionTOP
H

RecessProng

BOTTOM

・The tightening torque of the screw is 0.8 N･m.
・Do not apply excessive torque more than stipulated value, otherwise it will damage the bodyof the instrument.

33. Installation of type R
Use nuts-set attached

Panel cut size
Ｍ3 nuts
Spring washers
Plain washers

75±0.375±0.34×φ4

φ87±0.3

Fixing the body with nuts
set after installing the
body on the panel from afront side.

Installation panel
thickness within 5

4. Installation of type FV, type FS
Ｍ4 screws(Drilling holes)
Ｍ4 nuts(Ｍ4 internal thread)Nuts unnecessary※A fixing screw set
doesn't attach.

Installation to the wall with M4 screws.

Panel cut size
In case of side view piping

In case of rear piping withstraight piping connector.

3×φ5
or 3×M4

3×φ5
or 3×M4

0°

32.5

0°

12

0°

φ95±0.3

12

12

3×φ5
or 3×M4

0°

0°

12

φ95±0.3

12

12

0°

φ95±0.3

In case of rear piping with rotary piping
connector or elbow type connector.

2×φ18

5. Installation of type PV, type PS
Use nuts-set attached

Panel cut size
Ｍ3 nuts
Spring washers
Plain washers

75±0.375±0.34×φ4

φ87±0.3
Installation panel
thickness within 5△！

CautionFixing the body with nuts
set after installing the
body on the panel from afront side.

・The tightening torque of the screw is 0.8 N･m.
・Do not apply excessive torque more than stipulated value, otherwise it will damage the bodyof the instrument.
46. Installation position
Must be specified at the time of ordering. After inspection and adjustment in accordance with the specified
installation position, it will be.
0～100Pa

0～200Pa

Vertical plane

3°3°Vertical plane

180°

90°

Horizontal

0°10°Vertical

180°

Horizontal

10° 10°Caution

10°

6° 6°

！

3°3°

△

90°

Horizontal

0°

Vertical plane

6° 6° Vertical

Vertical

90°

180°

Other than 0～100Pa, 0～200Pa

0°

Horizontal
plane

To become not covered by the warranty, do not use other than the specified installation
position at the time of order.

7. Use of in a position other than the specified is out of accuracy warranty
・Type N, type R
Polarity can’t be changed, because there is distinction between high pressure side and low pressure side.
＜Front view＞＜Rear view＞

Piping connectors
is rotatable.

Piping connectors is
capable of desorption
and exchange.

TOP

H

Manostar
Ｍ5

Low
pressure side

BOTTOMHigh
pressure side

Low
pressure sideHighpressure side

・The tightening torque of the connector is 0.5Nm. There is a fear that the meter body and nut
thread are damaged for fastening beyond the stipulated value.
VR connector （KGA71VR）：△！

Caution・The desorption of the base, please use the box driver or wrenchof Hex.7

Ground(Hex.7)

Ｏ-rings(I.D.7, W.D.1)

・O-rings is not fixed. Please be careful not to lose the O-rings at
the time of piping connector removal.
・At the time of installation, please don’t forget to connect O-rings,
or to bite O-rings. Forget connecting O-rings and biting O-ring, it
will be airtightness failure of the piping connector.

5

NippleThe structure oftype VR piping

・Type FV, type PV, type FS, type PSa）Installed the piping connector on the side.

Seal plug

Seal plug

About side connector ports of the instrument body, there is no distinction between high pressure side and low
pressure side. The polarity of the high and low pressure side is determined by the piping connector attached.
It is able to convert the polarity by changing connectors. The high pressure side and the low pressure side are
identified with red and blue color respectively.
b） Installed the piping connector on the rear.

Low pressure side
piping connector (Blue)

Seal plug

Seal plug

High pressure side
piping connector (Red)The rear port can’t be changed because it has a distinction between high pressure side and low pressure
side. Install the red connector to the port with the sign of “H” and the blue connector to the port with thesign of “L”.
In addition, if one of the connectors is attached to the side, it is not possible to measure properly.
Be sure to attach both the connectors to the back.

△！

Caution△

Adaptor forrear piping

Type FV, type FS
Adaptor for rear piping (KGA81FBA-H and L) are necessary to
avoid interference with piping connectors and panel to make alocking spacer easier.

The plug sealing between the piping connector port of the instrument, the piping connector,
and the sealing plug is achieved by O-rings. Apply the tighting torque specified below whentightening the piping connector and sealing plug. The instrument body will be broken if
excessive torque is applied.
・Piping connector for vinyl or rubber tube and metal tube ....... 1N･m
Spanner fortightening
・Seal plugs ...... 0.5N・m！

CautionTightening with locking spanner
Always use locking spanner to tighten the cap nut of MT
connectors, MR connectors, and MTW connectors or piping
R1/8 connector to the R1/8 Connector adapter. Be careful
not to apply the tightening torque directly to the instrument
body.

6

Locking spanner

Cap nut

8. Acceessory for WO71
W
Customm sealpolyester film madde [ installed ]Insstallation platesteel--made [ installe
ed ](for typpe N)

Product ccode

Product code

ADPL771

SEA
AL-WO71
FreelyF
set the color-scalecandd flag pointer an
nd paste itinnto the instrum
ment body.

Used witth the installatiion of the instrument body.
V connector
VR
ppolycarbonate duralumin made[ installed ]

！ Cau
ution
△

(for type N, typpe R)

・Accessories for WO71 ccannot be used in otherproducts.
・No polarity of the low prressure side anda thehigh pressu
ure side to thee VR connecttor.

Product ccode(KGA71VR)

KGA71VVR
These connectors are rotaryrelbow ty
ype and can beconnected to vinyl or rubberrtube of I.D.4.

9. Acceessory for tyype FV, typee PV, type F
FS, type PS
VT connecto
or for vinyl or ru
ubber tube
resin--made [ installeed ]MT connector foor metal tube
brass-made [ option ]Produ
uct code

Product codeeHigh pressure

Low presssure

High preessure

Low
w pressure

K
KGA81VT-H-P
P

KGA81VT--L-P

KGA81M
MT-H

KGA
A81MT-L

Be sure to use I.D.6 annd thickness off 1mm or more.
rtube with enough withsstanding
Howeverr, the vinyl or rubberpressuree (including vaccuum pressure) is required whhen the
instrumeent range or thee line pressure is higher than 50 kPa.
VR connecto
or for vinyl or ru
ubber tube
brasss-made [ option ]Produ
uct codeHigh pressure

Low presssure

KGA81VR-H

KGA81VR
R-L

MR connector foor metal tube
brass-made [ option ]Product codee

These coonnectors are rotaryrelbow ty
ype and can beconnecteed to vinyl or rubberrtube of I.D.
I
6.

Produ
uct code
Low press ure

KGA81PT-H

KGA81PT
T-L

High preessure

Low
w pressure

KGA81M
MR-H

KGA
A81MR-LThis
T connector is rotary elbow
w type and can beb connectedto the metal tub
be (made from ccopper and alum
minum and soon).
o Applicable piping materiall is the same as MT
connector.
c

PT conneector for plastic tube
PBT, brass-made [ opption ]High pressureThis
T connector can be conneccted to the mettal tube
(O.D.6±0.1) mademfrom coppeer, aluminum anda so on.
When
W
this connector is conneccted to plastic tube (O.D.6,
I.D.4), remove thet brass-madee sleeve and usse theresinous inner sleeve set (XIN66×4) that is solld separately.
(pplease use the type MTW connnector for thee stainlesssteel pipe)

PR
R connector foor plastic tube
PBT,
P
brass-madde [ option ]The jointt installed tubee is push-in typ
pe. Use the opttional
tube or tthe applicable tubet(JIS B8381-1).

Product codeeHigh preessure

Low
w pressure

KGA81P
PR-H

KGA
A81PR-LThe
T joint installled tube is pushh-in and rotaryy elbow type.
ApplicableApipin
ng material is thhe same as PT connector.

7

MTW connector
stainless steel-made [ optiono]Adaptor for rrear piping
brass-made [ option ]Product codee

Producct codeHiigh pressure

Low pressuureHigh preessure

KGA
A81MTW-H-S

KGA81MTW--L-S

KGA81FFBA-H

Low
w pressure
KGA
A81FBA-L

Itt’s used when atttaching MT, VR and MR connecttor (Except
MTW)
M
to the back with type FV aand type FS.

This is cconnector can beb connected to stainless tubee(O.D.6±±0.1).
Inner sleevve set for plastic tube
polypropyylene-made [ optiono]R1/8 Connecttor adapter
brass-made [ option ]Product coode

Product codeeHigh preessure

Low
w pressure

KGA81R1//8AD-H

KGA8
81R1/8AD-L

XIN6X44
You needd this to conneect plastic tubee (O.D.6, I.D.4)) to theconnectoors for metal tuube. （the follow
wing figure）
Inner（resin)
Sleeve（resin)

Joint
Jof R1/8 ca
an be connecteed.
※Specifications※
s are different ffrom the adaptor for rearpiping. (KGAA81FBA)
Seal pluug polypropyle ne-made [insta
alled]

Plasticc tube

Product code
KG
GA71PLG※Seal※
plugs of other productss can't be used, because thestructure is different.
d△！

Cautioon

Commerrcial products (connectors ettc) can’t be used, because the structure is different. Be sures
to useexclusivve connectors.

10. Zerro point settting
Seet the zero pooint of the gagge or the presssure transmittter by turnin
ng thezeero adjuster, afterainstallingg them in the position whicch they are ussed.
Please use a flaat-blade screw
wdriver of thee max. width 2 ～ 3mm.
Beefore setting thet zero point, be sure to open the highh and low pressure
pipping connectoor to atmosphhere, or stop tthe equipmen
nt to run low thetresidual pressurre to zero.
Seetting device ofo zero point to the right ppointer by turrning to the riight,
poointer by turnning to the left
ft will move too the left.
Thhis instrumentt has zero point fluctuationns due to tem
mperature driftft.
Zeero point setting, please doo at a temperaature of envirronment you use.
u

Settting deviceof zero pointMannostar

11. Settting of flag pointerThhe flag pointer is used for indicatingia p redicted values or alim
mit values. Set it at the preedicted or lim
mit values.
If yyou turn the setting devicee of the flag ppointer clockw
wise, theflaag pointer movves counter-cclockwise.

Pointer （Black）
Setting devicedofthe flag pointer8d）Flag pointer （Red12. Preessure of meeasurement and connecction of pipinnga) Measuremennt of positive pressure
Connect thhe tube to thee high pressurre side piping connector (inndicated by reed color or leetter H). The
lower presssure port (blue or L) shouldd opened to atmosphere,abut do not rem
move the pipinng connector..
b) Measuremennt of negative pressure
Connect thhe tube to thee low pressuree side piping connectorc(blu
ue or L). The high pressuree port (red orrH) should beb opened to atmosphere, but do not reemove the pip
ping connectorr.
c) Measuremennt of differenttial pressure
Connect thhe tube from the high pressuure piping con
nnector to thee high pressurre port (red or H) and frommthe low preessure piping connector to the low presssure port (bluue or L).

Ⅳ．GENEERAL PRECCAUTIONSS
1. Prohhibition of coommon pipinngPipping each of pressurepdeteectors and preessurereceiving instruuments tube exclusivelyedeedicated for it,
annd do not connect the pipinng commonly with theaddjacent systemm as shown in the right figuure.
Coommon pipingg causes meassurement erroor because theeprressure of eacch system inteerferes.

2. Prevvention of clogged pipingg due to draain

Installation diagram ofo drain tankIf drrain remains withinw
the linee, it causes mmeasurement error.
eBe suree
to iinstall the preessure receiving instrumentt above the pressure outlet
porrt of the presssure detector and arrange tthe line so th
hat the drainwater should nott remain in the slack pipingg.
If thhe arrangemennt mentioned above in not possible, install a drain tan
nkwithhin the line ass shown in thee right figure and clean it onceoin a whilee.
Afteer the cleaninng of the tank, check that thhe air tightness is fully kept.

Manos tar

D
Drain
tank

Drain

3. Meassurement off high tempe
erature gase s
In the pressurre measurement of high temperature gas, use thheprressure detecttor (pitot tubee) made of thhe heat-proof metal (such asastaainless steel),, and connect it with the prressure receivving instrumenntthrough a metaal tube which
h is long eno ugh to cool down the hig
ghtemperature gaas.

4．Erroors caused byb long distaance piping

9

Instrumennt
body

Piping length

Thhe speed of reesponse is delayed when thee product is usedufor remotte
moonitoring.
Inn such applicattion, the I.D. of the connecction tube sho
ould be as largge
ass possible.
Thhe time consttant is almost inversely prooportional to thet inner crosss
seectional area ofo the piping. (refer to the diagram beloow)
If the piping conditions off the high aand low presssure side arre
siggnificantly diffferent, the difference in thhe piping resisstance betweeenhigh and low pressure side causes tthe differencee in pressurretransmission tim
me, and the measurementmbecomes inacccurate.

Ⅴ．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.

Ⅵ．RODUCT WARRANTY
Warranty Period
The warranty period shall be for one year from the date that the product has been delivered to the location
specified by the purchaser.
Warranty Scope
In the event of any failure or defect in the product or non-conformity of specifications due to the reasons solely
attributable to Yamamoto Electric Works, Yamamoto Electric Works shall remedy such malfunctioning or
defective product at its own cost in one of the following ways to be selected by Yamamoto Electric Works:ⅰ) repair such product, ⅱ) replace such product.
However, this Warranty shall not cover the damages or defects that arise due to any of the following reasons.
(1) Any failure resulting from improper conditions, improper environments, improper handling, or improper
usage other than described in the instruction manual or the specifications arranged between the purchaser
and Yamamoto Electric Works.
(2) Any failure resulting from factors other than a defect of our product, such as the purchaser’s equipment
or the design of the purchaser’s software.
(3) Any failure resulting from modifications or repairs carried out by any person other than Yamamoto
Electric Works’ staff.
(4) Any failure caused by a factor that cannot be foreseen at a scientific/technical level at the time when the
product has been shipped from Yamamoto Electric Works.
(5) Any disaster such as fire, earthquake, and flood, or any other external factor, such as abnormal voltage,
for which we are not liable.
Yamamoto Electric Works specifically disclaims all implied warranties of merchantability and/or fitness for aparticular use or purpose, as well as liability for incidental, special, indirect, consequential or other damages
relating to the product.
*This product warranty is only valid within Japan.
Product Applicability
Our products are designed and manufactured as general-purpose products for general industries. Therefore, ourproducts are not intended for the applications below and are not applicable to them.
(1) Facilities where the product may greatly affect human life or property, such as nuclear power plants,
aviation, railroads, ships, motor vehicles, or medical equipment(2) Public utilities such as electricity, gas, or water services(3) Usage outdoors, under similar conditions or in similar environments
This document has been translated from the original Japanese version, and the original Japanese version takes
first priority.
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 to change
without prior notice because of modification and the like.

10