RoHSSRREAD THE INSTRUCTIION MANUUAL BEFORRE USING

INSTRUCTION MANUALCORRROSION-PRO
OOF TYP
PEMANOOSTAR
R TRANNSMITTTEREMTGP1

No. TR-EMTGP1-E02

1-2-3,Nishiishiriike-cho,N
Nagata-ku,Koobe,653-0031 JAPANTEL. +81-78-631-6+6000 FAX. +881-78-631-60020

INTRODUCTION
Thank you very much for purchasing of 「MANOSTAR TRANSMITTER EMTGP1」.

△！

CautionTo ensure your safety in using this instrument:- Be sure to read the instruction manual carefully before using this instrument so that you canuse it properly.
Wrong use may result in failure of this 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.

△Warning！

- Do not apply the pressure to the instrument more than it can withstand.
The diaphragm and the retainer are broken and cause of injury or accident, etc. disaster if the pressure
exceeding withstanding pressure of the pressure receiving element is applied to the instrument. The casebody and the transparent cover of the instrument are broken and cause of injury or accident, etc. disaster
if the pressure exceeding withstanding pressure of the instrument body is applied to the instrument.
- Avoid using where instrument is exposed to many vibration and impact.
Using this instrument where intensified vibration and impact may be damaged instrument. It is expectedthat gas leaks of instrument which harms a parson.
- Do not exceed rated surrounding temperature, humidity and altitude in use.
Using this instrument by exceeding rated surrounding temperature and humidity and altitude it may bedamaged and cause the accident.
- Do not disassemble or reconstruct your instrument.
It may void your warranty.

△Caution！

- As to where to install and how to install the instrument, be sure to follow the instruction manual provided
so as to ensure a proper method.
- Do not use organic solvent for cleaning.
Use of organic solvent, such as thinner and benzene, to remove surface dirt and stain may cause melting
and cracking on the surface. To remove dirt and stain, be sure to wipe them off with a wet cloth using
diluted neutral cleanser.
- Wrong terminal connection
If the signal input and output terminals are connected to the power supply, the internal mechanism burnsout.
- Dropping the productProduct is a precision instrument. If you drop the product, there is a possibility that the exterior, also theinterior mechanism damage.
- Removal of the piping
If you replace the old pipes, please do not pull the pipe with a strong force. There is a possibility that thepipe cap is broken.

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Ⅰ．OUTLINE DRAWINGEMTGP1B (exposed terminal connection type)

100

100

EMTGP1A (drip-proof indoor-use type)2015

High pressure side
pressure release port

94

91

115
水 平

水 平

ＨＯＲＩＺＯＮＴＡＬ ＰＯＳＩＴＩＯＮHigh pressure side
pressure release port

M4 terminal screws

64

44ＨＯＲＩＺＯＮＴＡＬ ＰＯＳＩＴＩＯＮ

88

88
4×φ5 installation long holes

4×φ5 installation long holes

5116

116

7

7

5

1/4−18 NPTInternal thread for American
standard tube 1/4‒18 NPT

1/4−18 NPTInternal thread for American
standard tube 1/4‒18 NPT

Panel cut size (typeA,typeB)
4×φ5 holes
or 4×M4 holes tapped

88±0.3116±0.3

φ30 hole

Ⅱ．EXTERNAL CONNECTION DIAGRAM- Two wires method transmitter receives 24V DC power
supply from outside and using power supply wiring,transmits 4 to 20mA DC signal to external receiver units.
- Two wires method transmitter can monitor output signal
during operation, if they are connected with ampere
meter with internal resistance of less than 10Ω to checkterminal.

△！

CautionOur receiver is equipped with AC-DC
power supply circuit for two wires method
our transmitter, therefore, In using
combination with our receiver, there is noneed of the AC-DC power supply which
is separately available.

2Check terminalfrom 4 to 20 mA14 to 20 mA

4Receiving
equipment

EMTGP1
23
Power supply DC 24 VGrounding

Transmission output diagram(differential pressure - output signal)
20mA
12mA

Output signal
（mA）

4mA
0050100

Pressure (%FS)

Ⅲ．INSTALLATION AND TRIAL RUNNING
1．Installation- Install this instrument at horizontal position (inclination angle at 5 °). If installation surface is vertical,
use the installation bracket on vertical wall to install horizontally. (refer to p.5)
- Take the space of 0.5 m above the transmitter for the purpose of adjustment and maintenance.
- Do not install the instrument outdoors directly. If you need to get it installed outdoors directly, store theinstrument at the storage casing with dew-proof construction.
- Avoid using where the instrument is subject to vibration, big impact and high humidity.
- Do not use at the place where corrosive gas (such as sulfuric gas and ammonia gas etc.) is present.
- Try to use the instrument as far away as possible from intensified power source and the unit generatinghigh frequency (high frequency welder and high frequency sewing machine etc.).
- The instrument is not designed for measurement of combustible gases and installation where explosive
danger or hazardous risk exists.
- Measurement of flammable gases and installation in the explosive hazardous area are not possible with theapparatus.

2．Pressure of measurement and connection of piping
The apparatus is exclusively designed for use with negative pressure measurement of gage pressure.
Connect the pipe for measurement pressure source (negative pressure) to the 1/4-18NPT internal thread
located at the under the apparatus. The measurement pressure will be the differential pressure from theatmospheric pressure.

△！

Caution

1/4-18NPT with the torque of 5.0 N･m.
Do not apply excessive torque more than necessary, otherwise it will damage theinstrument body.

3．Caution of piping- Before implementing the piping work, be sure to read the Section V“Accessories for Manostar Transmitter”.
- Considering the maintenance services, it is recommended to install
the calibration valve device as shown in the figure at the right.

Negative-pressure
side valve
Atmosphericopen valve

Duct- Prohibition of common piping- Prevention of clogged piping due to drain- Errors caused by long distance piping
The speed of response is delayed when the product is used for remotemonitoring. In such application, the I.D. of the connection tube should be
as large as possible. If the piping conditions of the high and low pressure
side are significantly different, the difference in the piping resistance
between high and low pressure side causes the difference in pressuretransmission time, and the measurement becomes inaccurate.
3

Room A

Room BEMTGP1EMTGP1

Independent piping○Passageway

If drain remains in 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 drain water should not
remain in the slack piping.
If the arrangement mentioned above in not possible, install a drain tankwithin the line as shown in the right figure and clean it once in a while.
After the cleaning of the tank, check that the air tightness is fully kept.

Common piping×Passageway

Piping each of pressure detectors and pressure receiving instruments tube
exclusively dedicated for it, and do not connect the piping commonly withthe adjacent system as shown in the right figure.
Common piping causes measurement error because the pressure of eachsystem interferes.

Room A

Room BEMTGP1EMTGP1

4．Wiring and connection- ＜EMTGP1A＞ can be used for cabling or conduit wiring. In addition, try to use wiring accessory orconnecting accessories that is separately sold.
- Use shielded wire for input and output wiring on current and voltage signal, and do not put them near
power line. Moreover, do not let it go through the same conduit with power line.
- Exercise care about terminal connection number because it is different according to types. Make sure
about a code of terminal connecting part on the terminal block, in accordance with the externalconnection diagram.
- Use a crimping terminal suitable for M4 terminal screw.
- Provide the the instrument on the grounding terminal with the class D grounding (grounding resistanceis 100 Ω or less).
Get grounding at the foot of installed unit. Also, EMTGP1A can get it from the grounding terminal insidethe upper cover.

φ9φ8.2- Make a one point grounding at the one end of shielded output signal cable.

φ4.3

△！

CautionTighten the terminal screws with the torque of 1.0～1.3 N･m.
Do not apply excessive torque more than necessary, otherwise it will damage theinstrument body.

5．Zero adjusting1) Since zero point of the instrument is changed according to mounting posture, therefore, after installation ofhorizontal posture is completed, be sure to perform zero adjustment.
2) After making sure that there is no mistake about wiring and connection, supply each equipment with power andstart a warm-up for 10 minutes.
3) Detach the tube to the piping connector of the apparatus to ensure the atmospheric open condition ormanipulate the calibration valve device.
4) Take out the upper cover of the instrument, turn the zero set adjuster inside and set zero point output of theinstrument at the value indicated on the table below.
5) As for span set adjusting, it has been adjusted already at our factory. Do not handle it.
Output signal table＜EMTGP1A＞

Output signal (DC)

Zero point

4 to 20mA

4.0mA

E

＜EMTGP1B＞

Do not handle it.

Do not handle it.

Zero set

Zero set

Printed circuit
bordⅣ．COMBINATION WITH RECEIVING INSTRUMENT AND DC POWER SUPPLY- For combination with our receiving instrument, no separate DC power supply is required.
- For combination with our square root converter, a separate DC power supply is required.
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Ⅴ．ACCEESSORIES FOR MAN
NOSTAR T
TRANSMITTTER
Terrminal cover sets （for EMT
TGP1B）(polyccarbonate, braass-made) [[installed]

Prroduct code：TTCA-T1

Forr wiring
Plasticc ground（for EMTGP1A） (polyacetal-mmade) ［optioon］

Prroduct codeRubberRbushingg
color

Applicaable cableouter diameter (mm)
Min.

Max.

AC4-2T

Black

6.5

9.0

AC4-3T

Red

8.5

11.0

AC4-4T

Green

10.0

12.5

-P
Plastic ground is used to wiire transmitteer with instrum
mentation cabble. Choose thhe plastic ground of the sizze
thhat rubber buush can hold external
eof cabble as shown right table.
-P
Please use shieelded cable.
Forr wiring conduuit
Adaptoor for conduitt（for EMTGP11A）(brass-made)) ［option］
25

When youy wire the cconduit tube ofo normaldiamete
er 19 or pliab le metal condduit
throughhout the condduit tube, use the adaptor
for conduit as shownn at left figuree. Becausewire inllet size of thee transmitter differ
dbyinternal thread of G 1 / 2.

22C19

Thread forcable conduit

φ15G 1/2

10

Product code： ADPA-EMT1

Insta
allation brackeet on vertical wall steel-m
made ［option］］
8×φ55 installation holes
Manostaar Transmitter

135

φ30

1.655 25
100110※※Installation screews are not includ
ded.

Vertical wall

135
4×φ7 insstallation holes on wall

0.5m or more

12.5Prroduct code：BBRKT-T1GP1Insttall this instruument at horizontal positioon (inclinationn angle at 5 °)). If installatioon surface is vertical,v
usethe installation bracketbon vertical wall to install horizontally.
Takke the space ofo 0.5 m abovve the transmiitter for the purpose
pof adjjustment and maintenance.

5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 periodiclubrication.
However, it is recommended that it is subjected to periodic inspection (calibration) once a year.

Ⅶ．PRODUCT 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.
CoverageIn 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 ElectricWorks’ staff.
(4) Any failure caused by a factor that cannot be foreseen at a scientific/technical level at the time when theproduct 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 tochange without prior notice because of modification and the like.

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