Yamamoto Electric Works MS65F, MS65 Instruction Manual

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INSTRUCTION MANUAL

〒 653-0031　1- ２- ３,Nishi-shiriike-cho,Nagata-ku,Kobe,Japan

TEL：078-631-6000

FAX：078-631-6020

READ THE INSTRUCTION MANUAL

ＭＡＮＯＳＴＡＲ　ＳＷＩＴＣＨ

ＭＳ６５ＭＳ６５Ｆ

（ＷＩＴＨ　ＡＩＲ　ＦＩＬＴＥＲ）

ＴＲ－ＭＳ６５－Ｅ０９

RoHS Compliant

TABLE OF CONTENTS

PAGE

INTRODUCTION

・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1

Ⅰ． PRECAUTIONS

・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1

Ⅱ． SPECIFICATIONS OF MANOSTAR SWITCH MS65 AND MS65F

・・・・・・・・・・・・・ 2

Ⅲ． INSTALLATION

1． Caution of service condition ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5 2． Installation of MS65, MS65F ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5 3． Pressure of measurement and connection of piping ・・・・・・・・・・・・・・・・・・・・・・・ 5 4． Connectors and piping material ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5 5． Compatibility of connectors・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6 6． Caution of piping ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6 7． Installation position ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6

Ⅳ． SETTING OF PRESSURE

1． Switch contact conﬁ guration ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7 2． Setting of upper limit/ lower limit ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7 3． Reset time ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 8

Ⅴ． ABOUT BUILT-IN MICRO SWITCH

1． Material of contact ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 8 2．

Contact material and applicable mecanism for low voltage and low current circuit

・・・ 8 3． Protection of contact of switch ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9 4． About measured gas and contact failure ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 10

Ⅵ． ACCESSORIES

1． Accessory for MS65 (for MS65, MS65F and MS65R) ・・・・・・・・・・・・・・・・・・・・・ 10 2． Line part accessories ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 12

Ⅶ． PERIODIC INSPECTION

・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 13

Ⅷ． PRODUCT WARRANTY

・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 13

Ⅰ． PRECAUTIONS

INTRODUCTION

Thank you very much for purchasing of "MANOSTAR SWITCH MS65, MS65F".

Caution

To 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. This manual should be kept in a proper place so that you can refer to it any time you need.

Warning

・ Do not use this instrument where ﬂ ammable gas is present.

The instrument is not explosion-proof. Do not use the instruments in the circumstance where ﬂ ammable gas is present. 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 the receiving element and housing material of the instrument. It is expected that corrosive gas leaked out of 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 the pressure receiving element is applied to the instrument. The case body of the instrument is broken 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 be damaged and causes the accident.

・ Avoid using where the instrument is subject to many vibration and impact.

Using the instrument where intensiﬁ ed 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 voltage in using.

Using the instrument by exceeding rated voltage may cause ﬁ re or electric shock.

・ Wire correctly.

Incorrect wiring may cause ﬁ re.

・ 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 be damaged 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 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 of organic solvent causes damage on the surface.

・ Dropping the product

If the product is dropped onto a desk or ﬂ oor, not only its exterior but also interior mechanism is broken.

Ⅱ． SPECIFICATIONS OF MANOSTAR SWITCH MS65 AND MS65F

Types :

Pressure ranges and characteristics :

Pressure

range codes

Pressure ranges

Accuracy of

switching point

(at 20℃ )

Max. switching

difference pressures

Materials of

pressure receiving

element

Pa kPa

60D 10 ～ 60 (0.01 ～ 0.06) ± 2.0 Pa 15.0 Pa

Polyester ﬁ lm

120D 20 ～ 120 (0.02 ～ 0.12) ± 4.0 Pa 20.0 Pa

300D 50 ～ 300 (0.05 ～ 0.3 ) ± 8.0 Pa 40.0 Pa

600D 100 ～ 600 (0.1 ～ 0.6 ) ± 15 Pa 60 Pa

1.2E 0.2 ～ 1.2 ± 0.030 kPa 0.120 kPa

3E 0.5 ～ 3 ± 0.080 kPa 0.400 kPa

6E 1 ～ 6 ± 0.15 kPa 0.60 kPa

Silicone rubber

12E 2 ～ 12 ± 0.30 kPa 1.20 kPa

30E 5 ～ 30 ± 0.75 kPa 4.00 kPa

( ) : Out of standard

㹋㹑㸴㸳㹄㹆㹔㹊㸱㸮㸮㹂㸫㹉

㸫㹉

㹂䠬䠽

㹃䡇䠬䠽

㹆

㹊

㹔

㹋

㹋㹊

㹔㹊

㻲㼛㼞㻌㼓㼑㼚㼑㼞㼍㼘㻌㼑㼘㼑㼏㼠㼞㼕㼏㼍㼘㻌㼘㼛㼍㼐

㻲㼛㼞㻌㼘㼛㼣㻌㼑㼘㼑㼏㼠㼞㼕㼏㼍㼘㻌㼘㼛㼍㼐

㼂㼀㻌㼟㼠㼞㼍㼕㼓㼔㼠㻌㼠㼥㼜㼑㻌

㼂䠨㻌㼞㼛㼠㼍㼞㼥㻌㼘㼛㼛㼟㼑㻌㼠㼥㼜㼑

㻹㼀㻌㼠㼟㼠㼞㼍㼕㼓㼔㼠㻌㼠㼥㼜㼑

㻹䠨㻌㼞㼛㼠㼍㼞㼥㻌㼘㼛㼛㼟㼑㻌㼠㼥㼜㼑

㻲㼛㼞㻌㼡㼜㼜㼑㼞㻌㼘㼕㼙㼕㼠㻌㼟㼑㼠㼠㼕㼚㼓

㻲㼛㼞㻌㼘㼛㼣㼑㼞㻌㼘㼕㼙㼕㼠㻌㼟㼑㼠㼠㼕㼚㼓

㻲㼛㼞㻌㼢㼕㼚㼥㼘㻌㼛㼞㼜㼘㼍㼟㼠㼕㼏㻌㼠㼡㼎㼑

㻲㼛㼞㻌㼙㼑㼠㼍㼘㼠㼡㼎㼑

㹀㹪㹟㹬㹩

㻹㼍㼤㻚㻌㼢㼍㼘㼡㼑㻌㼛㼒㻌㼟㼏㼍㼘㼑

㻼㼞㼑㼟㼟㼡㼞㼑㻌㼞㼍㼚㼓㼑㻌㼏㼛㼐㼑

䠄㼑㼤㼍㼙㼜㼘㼑䠅

㻯㼛㼚㼠㼍㼏㼠

㼁㼚㼕㼠

㻼㼞㼑㼟㼟㼡㼞㼑㻌㼞㼍㼚㼓㼑

㻼㼕㼜㼕㼚㼓㻌䠿㼛㼚㼚㼑㼏㼠㼛㼞

㻿㼑㼠㼠㼕㼚㼓㻌㼛㼒㻌㼟㼏㼍㼘㼑

㼀㼥㼜㼑

㹄㻙㼃㼕㼠㼔㻌㼍㼕㼞㻌㼒㼕㼘㼠㼑㼞

㹀㹪㹟㹬㹩

Pressure measuring method

Pressure receiving element

Gas to be measured

Pressure setting method

Standard installation position

Medium and ambient

temperature

Ambient humidity

Withstanding pressure

of instrument body

Withstanding pressure

of receiving element

Withstanding vibration

Withstanding impact

Insulation resistance

Withstand voltage

Material of the outer case

Applicable piping

Piping connector polarity

Cable connection

terminal screws

Mass

Accessory

Conformed standards

Caution

Measuring differential pressure

Diaphragm (for material information, refer to “Pressure ranges and characteristics” )

Air, non-corrosive and non-combustible gases (not liquid)

Dial with scale

Installation position from upward horizontal to vertical is available (refer to p.6)

- 10 to + 50 ℃ (no freezing)

90 % RH or less (no dewing)

200 kPa

40 kPa

5 to 10 Hz Amplitude : 10 ㎜ , 10 to 50 Hz Acceleration : 39 m/s

(each two hours on triaxial directions)

100 m/s2 (each six times on triaxial direction)

Between each terminal and case 20 MΩ or more (500 V DC megger)

Between each terminal and case 1500 V AC 50 / 60 Hz, for one minute

Phenol resin and aluminum die cast

1. Vinyl, plastic or rubber tube (I.D. 6) ･･･ Piping applicable model attached with connector for vinyl or plastic tube

2. Metal tube (O.D. 6 ± 0.1) ･･･ Piping applicable model attached with connector for metal tube

3. Hard plastic tube (O.D. 6 × I.D. 4) ･･･ Inner sleeve set (XIN 6 × 4) is needed separately for type attached with piping

connector for metal tube.

The part of connector piping is marking “H” on high pressure side and “L” on low pressure side.

M4 screws (three points)

MS65 Approximately 380 g MS65F Approximately 550 g

Nil

RoHS Directive (2002/95/EC) (Products in compliance with the RoHS carry G

or ［［G］］ mark on the label of

product itself and on each package.)

In case of measuring combustible gas and using in combustible gas area, use with intrinsically safe apparatus construction.

Contact rating :

[For general electrical load]

Speciﬁ cations Rated voltage Resistive loads Inductive loads Loads on motor

Contact composition

SPDT

(single pole double throw type)

Electrical life

100,000 switching cycles

Contact Material

Silver (round rivets point)

30 V DC 3 A 2A

( )

125 V AC 250 V AC

5 A 5 A

3 A 3 A

( )

1 A

0.5 A

[For low electrical load]

Speciﬁ cations Rated voltage Resistive loads Inductive loads Loads on motor

Contact composition

SPDT

(single pole double throw type)

Electrical life

100,000 switching cycles

Contact Material

Gold alloy (cross point)

30 V DC 0.1 A 　　　　　　　　　　

125 V AC 0.1 A 　　　　　　　　　　

Characteristics of built-in air ﬁ lter (MS65F)

Material

Polyvinyl pholmor

porous sheet (t = 2 ㎜ )

Average collection rate 97.1 % (ratio in terms of weight)

Retaining capacity 300 g/m

time

constant

7ms

power factor

0.4

Caution

・ In case of driving an inductive load such as relay, contact trouble may be happened due to

counter electromotive force and rush current, therefore insert the protective circuit for absorbing surge by using diode or varistor. (refer to p. 9)

・ In case of low current or voltage, use the low electrical load type. The general electrical load

type is decreased contact reliability. (refer to p. 8)

“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 the airtightness of the instrument is guaranteed．

Caution

If the pressure exceeding the withstanding pressure of the pressure receiving element is applied to both L and H sides at the same time, the imbalance of the ultimate pressure arising from the difference in 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.

Ⅲ． INSTALLATION

Before using this instrument, make sure if it is the type that you requested and meets the demand of the environment, pressure and piping conditions where it is used, by speciﬁ cation.

1. Caution of service condition

a) 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) The instrument cannot be installed outdoors without an appropriate protection. If outdoor installing is

required, 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 ﬂ at.

2. Installation of MS65, MS65F

Panel cut size

3. Pressure of measurement and connection of piping

a) 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 from the low pressure piping connector to the low pressure port (blue or L).

4. Connectors and piping material

a) Connectors for vinyl or plastic tube (VT, VL, VK connectors)

These are connectors for vinyl, plastic or rubber tubes. Be sure to use I.D. 6 and thickness 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 is higher more than 50 kPa.

b) Connectors for metal tube (MT, ML, MK connectors)

These piping connectors can be connected to metal tube made from copper and aluminum and so on. (O.D. 6, tolerannce ± 0.1, ring joint type) When this connector is connected to hard plastic tube (O.D. 6, I.D. 4), remove the sleeve made of bress and use the resinous inner sleeve set (XIN6 ×

4) that is the optional accessory.

MS65 MS65F

Caution

Tighten the piping connectors with the torque of 1 N･m. Do not apply excessive torque more than necessary, otherwise it will damage the instrument body.

Inner sleeve set

for plastic tube

Product code XIN6X4

ᵧᶌᶌᶃᶐίᶐᶃᶑᶇᶌᵇ

ᵱᶊᶃᶃᶔᶃίᶐᶃᶑᶇᶌᵇ

ᵮᶊᵿᶑᶒᶇᶁᴾᶒᶓᶀᶃ

ᵔᵑᶠᵎᵌᵑ

ᵒᶣ󰵲ᵓᴾᶆᶍᶊᶃᶑᴾᶍᶐ

ᵒᶣᵫᵒᴾᶆᶍᶊᶃᶑᴾᶒᵿᶎᶎᶃᶂ

ᵗᵒᶠᵎᵌᵑ

ᵓᵎᶠᵎᵌᵑ

ᵑᶣ󰵲ᵔᴾᶆᶍᶊᶃᶑᴾᶍᶐ

ᵑᶣᵫᵓᴾᶆᶍᶊᶃᶑᴾᶒᵿᶎᶎᶃᶂ

5. Compatibility of connectors

The piping connector of Manostar switch MS65, MS65F, WO81, and WO70 are not compatible with each other.Make sure to use the dedicated connectors of Manostar switch MS65, MS65F.

6. Caution of piping

Prohibition of common piping

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

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 the pressure 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

tank within the line as shown in the right ﬁ gure and clean it once in a while.

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

kept.

Measurement of high temperature gases

In the pressure measurement of high temperature gas, use the pressure detector (pitot tube) made of the heat-proof metal (such as stainless steel), and connect it with the pressure receiving instrument through a metal tube which is long enough to cool down the high temperature gas.

d) Errors caused by long distance piping

The speed of response is delayed when the product is used 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 to the inner cross sectional area of the piping. If the piping conditions of the high and low pressure side are signiﬁ cantly different, the difference in the piping resistance between high and low puressure side causes the difference in pressure transmission time, and the measurement becomes inaccurate.

7. Installation position

㻵㼚㼐㼑㼜㼑㼚㼐㼑㼚㼠㻌㼜㼕㼜㼕㼚㼓䕿㻌

ᵮᵿᶑᶑᵿᶅᶃᶕᵿᶗ

ᵰᶍᶍᶋᴾᵠᵰᶍᶍᶋᴾᵟ ᵰᶍᶍᶋᴾᵠᵰᶍᶍᶋᴾᵟ

ᵫᵱᵔᵓᵫᵱᵔᵓ ᵫᵱᵔᵓᵫᵱᵔᵓ

㻯㼛㼙㼙㼛㼚㻌㼜㼕㼜㼕㼚㼓㽢㻌

Drain

Drain tank

Switch

㻵㼚㼟㼠㼍㼘㼘㼍㼠㼕㼛㼚㻌㼐㼕㼍㼓㼞㼍㼙㻌㼛㼒㻌㼐㼞㼍㼕㼚㻌㼠㼍㼚㼗

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

ᵧᶌᶑᶒᵿᶊᶊᵿᶒᶇᶍᶌ

ᶎᶍᶑᶇᶒᶇᶍᶌᴾᵿᶌᶅᶊᶃ

ᶂᶍᶕᶌᶕᵿᶐᶂᴾᵏᵑᵓᴾᶟ

ᵢᶍᶕᶌᶕᵿᶐᶂᴾᶆᶍᶐᶇᶘᶍᶌᶒᵿᶊ

ᵴᶃᶐᶒᶇᶁᵿᶊ

ᵦᶍᶐᶇᶘᶍᶌᶒᵿᶊᴾ

ᵿ

ᶀ

ᵏᵎᴾỰ

ᵦᶍᶐᶇᶘᶍᶌᶒᵿᶊᴾᶎᶊᵿᶌᶃ

ᵴᶃᶐᶒᶇᶁᵿᶊᴾᵮᶊᵿᶌᶃᴾ

ᵤᶍᶊᶊᶍᶕᶇᶌᶅᴾᶇᶌᶑᶒᵿᶊᶊᵿᶒᶇᶍᶌᴾᶎᶍᶑᶇᶒᶇᶍᶌᴾᶇᶑᴾᵿᶔᵿᶇᶊᵿᶀᶊᶃ

ᶀ

ᵱᶒᵿᶌᶂᵿᶐᶂᴾᶇᶌᶑᶒᵿᶊᶊᵿᶒᶇᶍᶌᴾᶎᶍᶑᶇᶒᶇᶍᶌᵱᶎᶃᶁᶇᶄᶇᶃᶂᴾᶇᶌᶑᶒᵿᶊᶊᵿᶒᶇᶍᶌᴾᶎᶍᶑᶇᶒᶇᶍᶌ

ᵿ

ᵭᶌᴾᶇᶌᶑᶒᵿᶊᶊᵿᶒᶇᶍᶌᴾᶎᵿᶌᶃᶊᵊᴾᶄᶍᶊᶊᶍᶕᶇᶌᶅ ᶎᶍᶑᶇᶒᶇᶍᶌᴾᶇᶑᴾᵿᶔᵿᶇᶊᵿᶀᶊᶃᵌ

㻿㼠㼍㼚㼐㼍㼞㼐㻌㼕㼚㼟㼠㼍㼘㼘㼍㼠㼕㼛㼚㻌㼜㼛㼟㼕㼠㼕㼛㼚㻌㼕㼟㻌㼒㼞㼛㼙㻌㼡㼜㼣㼍㼞㼐㻌㼔㼛㼞㼕㼦㼛㼚㼠㼍㼘㻌㼠㼛㻌㼢㼑㼞㼠㼕㼏㼍㼘

ᵟᶊᶊᴾᶐᵿᶌᶅᶃ

Ⅳ . SETTING OF PRESSURE

1. Switch contact conﬁ guration

・ Composition of contact of this instrument is as shown on

the right.

・ If the instrument is not applied by differential pressure we

call such “normal condition”.

・ At normal condition, the contact between COM. and N.C.

is closed, and between COM. and N.O. is open.

・ With increase of differential pressure and reaching the actuation pressure, the contact will be changed

over ; between COM. and N.C. is opened and between COM. and N.O. is closed.

2. Setting of upper limit/ lower limit

・ When differential pressure applied to the instrument is

increased starting from zero and changes over the electric contact from N.C. (normal close) to N.O. (normal open), the pressure at this moment is called “actuation pressure”.

・ When this differential pressure decreases from the pressure

higher than this actuation pressure activating electrical contact and returning the contact from N.O. (normal open) to N.C. (normal close), the pressure at this moment is called

“reset pressure”. ・ There is certain difference between actuation pressure and reset pressure and this is called “dead band”. ・ There are two types of the instrument. One is called “upper limit setting type” type (H) whose scale of

setting knob is adjusted on actuation pressure, the other is called “lower limit setting type” type (L)

which is adjusted on reset pressure. ・ Be careful about the difference between the upper and lower limit setting switched and also understand

the relation between the pressure increase/ decrease and the contact composition before designing the

operational sequence.

Depending on the purpose of use, choose the instrument either “upper limit setting type” or “lower limit setting type”

Difference of contact movement between “upper limit setting type” and “lower limit setting type”

In case of 1-6 kPa range with set value 2 kPa. (dead band is 0.6 kPa)

Adjusting of scale Name plate

Upper limit

setting type

Adjusted in

activating pressure

In case of “upper limit setting type”

When the differential pressure increases, the circuit is closed between N.O. and COM. at 2 kPa. Then as the differential pressure decreases, the circuit is opened between N.O. and COM. at 1.4 kPa.

Lower limit

setting type

Adjusted in

reset pressure

In case of “lower limit setting type”

When the differential pressure increases, the circuit is closed between N.O. and COM. at

2.6 kPa. Then as the differential pressure decreases, the circuit is opened between N.O. and COM. at 2 kPa.

The scale of the setting knob is adjusted for both upper and lower limit setting type at our factory before shipping. It is not allowed for customers to convert from the upper limit setting to the lower limit setting or vice versa.

ᵢᶇᶄᶄᶃᶐᶃᶌᶒᶇᵿᶊᴾᶎᶐᶃᶑᶑᶓᶐᶃ

ᵟᶁᶒᶓᵿᶒᶇᶍᶌᴾᶎᶐᶃᶑᶑᶓᶐᶃ

ᵰᶃᶑᶃᶒᴾᶎᶐᶃᶑᶑᶓᶐᶃ

ᵱᶕᶇᶒᶁᶆᶇᶌᶅᴾᶂᶇᶄᶄᶃᶐᶃᶌᶁᶃ ᵆᶂᶃᵿᶂᴾᶀᵿᶌᶂᵇ

ᵲᶇᶋᶃ

㻱㼤㼜㼘㼍㼚㼍㼠㼕㼛㼚㻌㼐㼕㼍㼓㼞㼍㼙㻌㼛㼒㼟㼣㼕㼠㼏㼔㼕㼚㼓㻌㼐㼕㼒㼒㼑㼞㼑㼚㼏㼑㻌㼜㼞㼑㼟㼟㼡㼞㼑

ᾝᵌᾒᵌ

ᾒᾞᾜᵌ

ᾝᵌᾞᵌ

ᵧᶌᶁᶐᶃᵿᶑᶃᴾᶍᶄ ᶂᶇᶄᶄᶃᶐᶃᶌᶒᶇᵿᶊ ᶎᶐᶃᶑᶑᶓᶐᶃ

Ⅴ． ABOUT BUILT-IN MICRO SWITCH

1. Material of contact

a) Gold alloy contacts ( “for low electrical load” )

Stable contact performance is expected since oxidizing or sulphidizing ﬁ lm in not easily formed on gold alloy contacts. However, they are not suitable for switching the load of high capacity. If used for such applications, the contacts are rapidly damaged due to sticking and blowout. The max. rating of our Manostar switch having gold alloy contact for micro lad is 100 mA, 30 V DC, resistive load. Use the switches within the limits of the max. rating and the min, rating.

b) Silver or silver alloy contacts ( “for general electrical load” )

In general, the contacts having silver as the main material, which is easy to form surface oxide ﬁ lm and, particularly, sulﬁ d e ﬁ lm, contacts work ﬁ ne in the early stage, but thereafter, on low electrical load such an 10 mA, 24 V DC the ﬁ rm cannot break. It tends to occur contact failure by the ﬁ rm. When the current or voltage applied to the contact is high enough to break the oxide/ sulfide film, is broken and the contact is kept good contact.

Magnified drawing of contact for low electrical load (cross point contact)

Magniﬁ ed drowing of contact for general load (small rivet contact point)

2. Contact material and applicable mecanism for low voltage and low current circuit

The schematic diagram in the right explains the proper range of load voltage and current for which silver or gold alloy contact is generally used when the contact is used for opening or closing the low voltage and low current circuit with a micro switch. When referring to the diagram, keep the following points in mind. The working range for each contact may actually be dependeding on the kind of micro switch, contact pressure, working condition, environmental condition, and the kind of load, and so on. In general, the contact should be selected based on the required level of contact reliability.

ᵎ

ᵓ

ᵏᵓ

ᵑᵎ

ᵢᵡ

ᵎ

ᵓ

ᵏᵓ

ᵏᵐᵓ

ᵟᵡ

ᵏ ᵓ ᵏᵎ ᵓᵎ ᵏᵎᵎ

ᵡᶓᶐᶐᶃᶌᶒ ίᶋᵟὸ

ᵴᶍᶊᶒᵿᶅᶃίᵴὸ

ᵱᶇᶊᶔᶃᶐ

ᵥᶍᶊᶂᴾᵿᶊᶊᶍᶗ ᶁᶐᶍᶑᶑᴾᶎᶍᶇᶌᶒ

３． Reset time

The reset time means the time needed for the differential pressure to decline to the reset pressure from the activating pressure (i.e., the electrical contact is reset) when the differential pressure is sharply reduced to zero. It is about three seconds at 20 Pa, and one second at more than 50 Pa for Manostar switches. (This value is only for the instrument itself and does not include the effect of piping.) Therefore, a response quicker than this value is not possible.

ᵱᶒᵿᶒᶇᶍᶌᵿᶐᶗ ᶁᶍᶌᶒᵿᶁᶒ

ᵫᶍᶔᵿᶀᶊᶃ ᶁᶍᶌᶒᵿᶁᶒ

ᵱᶒᵿᶒᶇᶍᶌᵿᶐᶗ ᶁᶍᶌᶒᵿᶁᶒ

ᵫᶍᶔᵿᶀᶊᶃ ᶁᶍᶌᶒᵿᶁᶒ

3. Protection of contact of switch

・ Contact protection circuit is used to extend the service life of contact. It reduces generation of noise at

the time of switching on and off. It also minimizes carbide and nitric acid gas generated by arc. Use this

circuit correctly, otherwise it will cause reverse effect, making the matter worse. ・ In case of using contact protection circuit, pay attention the operating time is possibility of delaying a

little. The following are typical examples of contact protection circuit.

a) Typical example of protective circuit

Example of circuit

Power supply

Special remarks for application and selection

DC AC

Varistor method

○○

This method is intended not to apply voltage beyond limit of varistor to inbetween contacts. It delays a little time to return inductive load such as relay. Select the most conformed rated model in terms of power supply voltage and load capacity in selected article by varistor maker.

C･R method

○○

It delays a little time to activate or return inductive load such as relay. As for CR value, to contact current and contact voltage, the estimate value is C : 0.5 μ F / A, R : 1.0 Ω / V. However, it differs according to the characteristics of load, therefore, be sure to confirm to select by experiment.

Diode method

○×

This method is intended to consume counter electromotive force of inductive load by diode and avoid to apply high voltage to inbetween the contacts. This method makes the return time of inductive load slower.Choose the diode rated current is more than load current and counter withstand voltage more than 10 times of power supply voltage.

Diode ＋ Zener diode method

○×

Diode method proves to be effective when the return time takes too long for inductive load such as relay. When you choose zener voltage of zener diode, choose base on power supply voltage. Be careful with limitations having this method. Because load is too big, larger capacity zener diode is needed for reverse surge power.

P.S. : Power supply, I.L. : Inductive load

b) Example of wrong protection circuit

Condenser method

This is very effective to remove arc at the time of off-contact, but this is likely to run charged current to condenser leading to contact sticking and short service life at the time on-contact.

This is very effective to remove arc at the time of offcontact, but this is likely to run short circuit current accumulated in the condenser leading to contact sticking on contacting. This is likely to short service life at the time oncontact.

P.S. : Power supply, I.L. : Inductive load

If the load is larger than the speciﬁ ed contact capacity, use a secondary relay. In general, the load voltage and the corrent is too less to the life of contact is longer. However, this does not expect for a low electirical load. Manostar switches cannot directly shut off the circuit of 250 V AC or more.

ᵳ

ᵧᵌᵪᵌ

ᵮᵌᵱᵌ

ᵰ

ᵡ

ᵧᵌᵪᵌ

ᵮᵌᵱᵌ

ᵧᵌᵪᵌ

ᵮᵌᵱᵌ

ᵧᵌᵪᵌ

ᵮᵌᵱᵌ

ᵡ

ᵮᵌᵱᵌ

ᵧᵌᵪᵌ

ᵡ

ᵧᵌᵪᵌ

ᵮᵌᵱᵌ

VL rotary loose connector type VK rotary lock connector type

The adaptor of level difference

connector for rotary type

Terminal cover set

Dial cover setMTW straight connector type (double ring joint)

MK rotary lock connector typeML rotary loose connector type

MT straight connector type

Filter set

VT straight connector type

Product code KGA65VT

Product code KGA65VRL

Product code KGA65VRK

Product code KGA65ADPA

Product code KGA65MT

Product code KGA65MRL

This connector can be rotated freely and ﬁ xed at any position.

Product code TCA-65

Product code KGA65MTW-S

Product code AFS65

Two sets of ﬁ lter, Two sets of packing

Product code TCLAMPA-65

This cover avoids trouble that someone set dial carelessly.

For stainless tube made from stainless steel

This connector can be rotated freely after piping.

4. About measured gas and contact failure

a) Corrosive gas

If the gas to be measured contains corrosive gases (nitric acid, hydrogen sulfide, sulfurous acid, ammonia, chlorine, and so on), they may cause electrical contact failure or corrosion of internal mechanism, which leads to malfunction of the switch. Do not use the switch for the gases containing high humid air because in such gases, the arc generated by opening/ closing the contact produces nitric acid, and it may also cause electrical contact failure or malfunction of switches.

b) Silicone gas

If the gas to be measured contains silicon produced from silicon (contained in oil, grease, filling agent, and so on), the gas produced by arc, generates by opening/ closing the contact, accumulates on the contact surface and causes contact failure. Take corrective measures such as the removal of the gas source or arc suppression.

c) Dust and organic gas

The micro switch used in a Manostar switch is installed in the positive pressure measurement chamber. The gas to be measured can easily flows into the chamber, thus, the composition of the gas largely affects the formation of the film. In addition, the dust contained in the gas to be measured can adhere to the contact surface and be changed into carbide caused the contact failure by the arc generated when the contact is opened or closed. Therefore, pay attention to the measurement environment as well. (Even with gold alloy contact, be careful about the dust.)

Caution

As the opening/ closing frequency of the contact increases, wear dust from the contact increases. This wear dust accumulates between the contacts to increase the contact resistance and causes the malfunction in the load circuit. In particular, the surrounding where there exists continuous vibration and impact will be most likely to cause contact failure due to worn powder.

Ⅵ． ACCESSORIES

1. Accessory for MS65 (for MS65, MS65F and MS65R)

This connector can be rotated freely after piping.

Product code KGA65MRK

３

２

１

４

No. N a m e

① O-ring ② Adaptor of level difference connector ③ O-ring ④ Rotary connector

No. N a m e

① Packing ② Filter

Fig.1

Fig.2

Installation of rotary connector

・ When you change piping connector from straight type to

rotary loose or rotary lock type, refer to the assembly drawing on the right.

1. After cleaning well around connector area, take off the straight type connector by the spanner. Because of preventing intrusion of dust in internal instrument at the time taking off.

2. The O-ring ① of the assembly drawing has been installed already on the instrument body. The O-ring ③ has been installed on the adaptor of level difference connector ② .

3. Install the adaptor of level difference connector to mainbody to tighten the part Ⓑ by the spanner in advance. Then tighten ground Ⓐ of level difference connector by spanner. Install the rotary connector to both instrument body and the level difference adaptor.

4. After installing, make sure that connector part is turned. In case of lock type, make sure that connector part is not turned. However, in piping, loose the head and move the connector where it is desired to be located and should be tightened again to ﬁ x.

Replacement of air ﬁ lter

・ In case of using model with air ﬁ lter (MS65F), depending on

amount of work,　conduct disassembly and clean out once in 2 years periodically and replace ﬁ lters and packings with new ones.

・ Filters are constructed as shown in Fig.1.

1. Loosen and take out four assembly screws

from the

instrument body, and disassemble ﬁ lter unit.

2. Remove the used ﬁ lters ② and packings ① from case b,

and clean out the inner surfaces of case

and c.

3. Replace new packings and filters with refer to Fig.2. Packings should be ﬁ t correctly into the grooves on both side of case b.

Next, place new ﬁ lters onto both sides of case

. (There are no distinction between the front and the back in packing and ﬁ lter either.)

4. Then put case

on top of casec together as to coincide the position of the through-hole on case b with the air hole on casec correctly. (refer to Fig.2)

5. Place the instrument body on top of case

piled with case c. Make sure that the relation of position between the installing leg of case

and the connectors on the instrument body are the same as that Fig.2 shows. And also make sure that convex parts under the instrument body are ﬁ t into the hollow parts (spot facings) on each corner of case

6. Insert four assembly screws

into screwholes as shown in Fig.1 and tighten the instrument body and cases

b c

ﬁ rmly.

2. Line part accessories

Pulsating protector

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

Corrosive gas absorber

In case of measurement of gas which corrodes the material 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.

For vinyl or plastic tube For metal tube

Product code FG-VT6-S Product code FG-MT6-S

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

Product code

Applicable range (max. value)

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 pulsating protector

For vinyl or plastic tube

For metal tube

ᵒᵗ

󰵲ᵔᶠᵎᵌᵏ

ᵦᶃᶖᵌᵏᵐ

󰵲ᵕ

ᵕᵓ

Outline drawing for corrosive gas absorber

For vinyl or plastic tube

For metal tube

ᵥᶐᵿᶌᶓᶊᵿᶐᴾᵿᶁᶒᶇᶔᵿᶒᶃᶂᴾᶁᵿᶐᶀᶍᶌ

ᵏᵓᵎ

󰵲ᵐᵕ

󰵲ᵕ

ᵦᶃᶖᵌᵏᵗ

ᵦᶃᶖᵌᵏᵐ

󰵲ᵔᶠᵎᵌᵏ

ᵏᵑᵖ

󰵲ᵐᵕ

Outline drawing for T joint

For vinyl or plastic tube

Product code TVT6-6-6

Product code TVT6-4-6

ᵑᵗ

ᵏᵖᵌᵓ

ᵑᶣ󰵲ᵕ

ᵑᵗ

ᵏᵖᵌᵓ

ᵐᶣ󰵲ᵕ

󰵲ᵓᵌᵓ

Ⅶ． PERIODIC INSPECTION

Generally speaking, it is important not to exert external stress to keep life and reliability of the instrument for a long 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.

Ⅷ． PRODUCT WARRANTY

Warranty Period

This product warranty is valid for one year from the date of delivery to a place speciﬁ ed 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) Usage of the product under any inappropriate conditions or environment contrary to what is described in our

product catalog, speciﬁ cations or manual.

Handling or usage of the product other than as described in our product catalog, speciﬁ cations or manual. (2) Breakdown due to a reason other than a fault within our product. (3) Any product that has been modiﬁ ed or repaired by a party other than us. (4) Any breakdown due to a reason that was not foreseeable based on scientiﬁ c 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.

The speciﬁ cations and description of the product explained in this instruction manual may be subject to change without prior notice because of modiﬁ cation and the like.

Yamamoto Electric Works MS65F, MS65 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual