RoHS

READ THE INSTRUCTION MANUAL BEFORE USINGINSTRUCTION MANUALMANOSTAR

GAGE

FR51A

No. TR-FR51A-E04

1-2-3,Nishi-shiriike-cho,Nagata-ku,Kobe,Hyogo 653-0031 JAPANTEL. +81（78）-631-6000 FAX. +81（78）-631-6020

TABLE OF CONTENTS

PAGE

INTRODUCTION..................................................................................................................................................... 1

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

Ⅱ．INSTALLATION
1．Caution of service condition .......................................................................................................... 2
2．Installation of FR51A ........................................................................................................................ 2
3．Installation position ............................................................................................................................ 3
4．Zero point setting ............................................................................................................................... 3
5．Piping material ..................................................................................................................................... 3
6．Pressure of measurement and connection of piping ........................................................... 3

Ⅲ．GENERAL PRECAUTIONS
1．Prohibition of common piping ........................................................................................................ 4
2．Prevention of clogged piping due to drain ................................................................................ 4
3．Errors caused by long distance piping ....................................................................................... 4

Ⅳ．PERIODIC INSPECTION .......................................................................................................................... 5
Ⅴ．PRODUCT WARRANTY ............................................................................................................................ 5

INTRODUCTION
Thank you very much for purchasing of "MANOSTAR GAGE FR51A".
To ensure your safety in using this instrument :△！

Caution・Be sure to read the instruction manual carefully before using the instrument so that you canuse 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 instruments in the circumstance where flammable gas ispresent. 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 leaked out of theinstrument will harm a person.
・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.
・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 expectedthat 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 in box.
・Do not use organic solvent for cleaning.
Use a cloth soaked with water-diluted neutral detergent to wipe the surface of a product. Using of organic
solvent causes damage on the surface.
・Dropping the product.
Product 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.
1Ⅱ．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 excessivemoisture. 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) 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 FR51A
How to installSpacer nut

2×φ4(holes)

61±0.370±0.323±0.32×φ4(holes)

61±0.370±0.323±0.3Ｍ3 nutSpring washer
Plain washer

1. When you install theinstrument body on thepanel, keep on attaching
spacer nuts to theinstrument body.

△！

Caution

FR51AHV
FR51ACV

FR51AVV2. After installing the instrument
body on the panel, set plain
washers and spring washers.
Then tighten four sets of M3
nuts from the back side ofpanel.

･If you install the instrument on the panel without spacer nuts, the instrument body will bebroken.
･Tighten the installation M3 nut with the torque from 0.8 N・m.
Do not apply excessive torque more than necessary, otherwise it will damage the instrument
body.

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3. Installation position
0～50 Pa, 0～100 Pa, -50～+50 Pa

All other ranges except for the following

Specification of the installation position(horizontal, vertical, other) is necessary at thetime of an order.

Installation position from upward horizontal fromvertical to downward stability is available.

Vertical plane

Vertical plane

10° 10°

Horizontal plane

180°

Horizontal plane

0°

10°

10°

45°

5°
130°

10° 10°5°13180°

45°

90°

90°

Vertical scale type is conformed to installation position of horizontal scale type.
a

Specified installation positionb

Following installation position is available

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

△！

Use of in a position other than the specified is out of accuracy warranty.

Caution

4. Zero point setting
Set the zero point of the gage or the pressure transmitter by turning
the zero adjuster, after installing them in the position which they areused.
At that time, use the flat head screwdriver whose max. width 2 to3mm.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 the residual pressure to zero.

0100

200
Pa300
FR 51A

Setting deviceof zero point

Turn the setting device ofzero point counter-clockwise,
the pointer moves to the right side.

5. Piping material
Please use I.D 4, the wall thickness of 1 mm or more piping material. Vinyl or rubber tubes are suitable.
When inserting the piping into the tube tap, please push the piping until it stops.

6. 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 orH) 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).

△！

CautionMeasurement 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,
leave the 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 (+-).
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Ⅲ．GENERAL PRECAUTIONS
1. Prohibition of common piping
Independent piping○
Room A

Room B

FR51A

FR51A

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
as shown in the right figure.
Common piping causes measurement error because thepressure of each system interferes.

Room A

Room B

FR51A

FR51A

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.
After the cleaning of the tank, check that the air
tightness is fully kept.

Installation diagram of drain tank
Gage

Draintank

Drain

3. Errors caused by long distance piping

4

Instrument
bodyPiping length

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.
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 pressure transmission time, and themeasurement becomes inaccurate.

Ⅳ．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.

Ⅴ．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 whohas 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) Usage 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) Any 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 to change
without prior notice because of modification and the like.

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