Wise P953 User manual

P953
P970
Explosion Proof Pressure Switch
Differential Pressure Switch
Manual

01. INTRODUCTION
02. APPLICATION
03. FEATURES
04. WARRANTY
05. SPECIFICATION AND STANDARDS
06. TRANSPORTATION, STORAGE AND OPENING
07. INTERNAL APPARATUS
08. OPERATING PRINCIPLE
09. CONTACT POINT WORKING TYPE AND CONNECTION
10. INSTALLATION
11. WIRING
12. MAINTENANCE AND OPERATION
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■WARNING
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5.
6.
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13.
Do not impose excessive pressure beyond the allowance.
Do not use corrosive measuring fluid.
This may cause pressure measuring element damage or rupture, resulting in measurung spill, eventually human injury or surrounding destruction.
Avoid excessive load, vibration, or shock. The glass tube may be broken. This may cause product damage or rupture to spill measuring fluid,
resulting in human injury or surrounding destruction.
Keep the working temperature range. (* Ambient : -40~65 ℃, * Fluid : Max. 100℃)
In excess of the working temperature range, the pressure switch may be broken or damaged to destroy the surroundings.
Use the device within the rated in/out value as written in the specification. Otherwise, the device may fall in trouble.
Both ends of a cable shall be the solderless terminal coated with an insulator.
The cable gland shall have the specified explosionproof grade or equivalent.
As for wiring, follow the internal wiring rules and the electric facility technology standard.
To detach the pressure switch, be sure to close the valve to block the measuring fluid. Measuring fluid spillage may destroy the surroundings.
When you are using oxygen for the measuring fluid, rely on the Use No Oil manometer.
Any oil reside in an ordinary product may react with oxygen, causing fire or explosion.
During site installation, be sure to follow this manual.
Do not modify the product by all means. Be sure to consult with us prior to repair.
Before you open the product case for installation, be sure to shut off the power behorehand.
Wiring while current is flowing may cause electric shock. Be sure to shut off the power beforehand.
For the right use and safety of this product, please read through this manual prior to use.
Handling error may cause device trip, injury, or disaster.
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Instructions for Proper and Safe Operation

1)
2)
3)
The pressure switch is the most suitable for simultaneous use of pressure indication and switching.
It can be used for explosionproof or hazardous area.
A micro switch is useful for stable open or close due to its snap action.
This is a pressure and differential switch equipped with a micro switch.
The switch is composed of pressure sensor, setting value and incoming pressure controller, and contact output micro switch.
Before you use this product, please read through this manual for correct use of each device.
1. Introduction
On reaching a set pressure, this product can be used for process control, abnormality notice, or warning on the basis of the On/Off signal.
In addition, due to the pressure resistant and explosionproof structure, it can be installed in explosionproof areas.
2. Application
We are not liable for any damage or failure of this product which was caused by your own modification, change, or repair against this manual
and the warranty will be no longer valid.
4. Warranty
3. Features
04

1) Main Specification
Liquid Contact Part
Case
Painting
Repeatability
Working Temp.
No. of Contact Points
Electrical properties
: ASTM A279 316L, ASTM A240 316L
: Cast Aluminium ( ASTM B179 SC102A )
: Silver
: ± 1.0 % OF FULL SCALE
: Ambient : -40~65 ℃
Fluid : Max. 100 ℃
: 1 X SPDT or 2 X SPDT (Independent Operation)
5. Specification and Standards
05
Withstand
Voltage
Insulation
Resistance
Rated Voltage
Resistance Load Inductive Load
125V AC 15A
More on 100MΩ
( Between Each
Terminal and Case )
100MΩor
More on 500VDC
( Between Each
Terminal and Case )
125V DC 0.5A
30V DC 2A
125V DC 0.5A
250V AC 15A
30V DC 2A
125V AC 15A
125V DC 0.5A
30V DC 1A
125V DC 0.05A
250V AC 15A
1500V AC, 50/60Hz
One Minute
( Between Each
Terminal and Case )
( Between Each
Terminal and Case )
30V DC 1A

06
Measuring Pressure Range and Folded Terminal Gap
ADJUSTABLE SETTING RANGE
DEAD BAND OVER RANGE
mmH
2 O (bar)
ONE SPDT
SET POINT
TWO SPDT
SET POINT PROOF RANGE BURST RANGE
bar
0.003~0.07
0.027~0.15
0.045~0.3
0.075~0.5
0.09~0.6
0.12~0.8
0.15~1
0.3~2
0.45~3
0.9~6
1.5~10
2.25~15
3~20
4.5~30
7.5~50
8.5~70
10.5~100
15.5~150
20~200
0.3~7
2.7~15
4.5~30
7.5~50
9~60
12~80
15~100
30~200
Within 5 % of
Adjustable Range
Within 10 % of
Adjustable Range
150 % of
Adjustable Range
45~300
90~600
1.5~1 MPa
0.225~1.5 MPa
0.3~2 MPa
0.45~3 MPa
0.75~5 MPa
0.85~7 MPa
1.05~10 MPa
1.55~15 MPa
2~20 MPa
bar bar MPa
35 3.5
70 7
170 17
200 20
400 40

07
Differential Pressure Range and Folded Terminal Gap
ADJUSTABLE SETTING RANGE
OVER RANGE
MPa MPa
STATIC WORKING
PRESSURE PROOF PRESSURE
kPa
1~15
15~25
25~35
35~50
0.1
0.1
0.1
0.1
0.05~0.2
0.2~0.4
0.4~0.7
0.7~1.5
2
2
2
4
0.15
0.15
0.15
0.15
15
15
15
20
MPa

2) NAME PLATE
08
P953
1. Type
2. Explosionproof Grade
3. Working Temperature
4. TAG No.
5. Warning Notice
6. Set Pressure
: 953 SERIES
: Ex d IIC T6
: Tamb=-40 ℃ to +65 ℃
: Serial No.(or Tag No.)
: Do not open when an explosive atmosphere may be present!
: Range
P970
2022 Deogyeong-daero,Giheung-gu, Yongin-si,Gyeonggi-do,Korea
2022 Deogyeong-daero,Giheung-gu, Yongin-si,Gyeonggi-do,Korea

3) External Dimension
Pressure Switch P953
09

3) Pressure Switch
Differential Switch P970
10

※ Safety certificates are identified by stickers as follows.
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1. Manufacturer and Brand Name
2. Type
3. Symbol Ex
4. Explosionproof Structure Symbol
5. Certificate Authority Name, Mark, and Certificate No.
6. X or U
1)
2)
3)
Instruction for Transportation
It may malfunction if it is shocked by falling. Please take good care of it during transportation.
Instruction for Storage
Store this product free of moisture, vibration, or dust.
In case of twofold loading, the total weight shall not be heavy enough to deform the packaging box. Also, keep the balance.
Instruction for Unpacking
Take good care of the product during unpacking.
Take the product out of the box in a wide area to prevent it from falling by mistake.
6. Transportation, Storage and Opening

1) HOUSING 2) Connection Diagram
7. Internal Apparatus
12
ADJUST NUT
MICRO SWITCH
HOUSING
ROD
TERMINAL BLOCK
INSULATING BOARD

As seen in the drawing, we used a diaphragm for the pressure measuring element and designed the system so that the diaphragm displacement
according to the pressure change can be transmitted to the lever through the rod to open or close the micro switch.
8. Operating Principle
13
M
ICRO SWITCH
ROD
DIAPHRAGM
SPRING

1) 1 Contact Point Type
No COM NC
2) 2 Contact Point Type
9. Contact Point Working Type and Connection
14
off
0 Set Max.
on
off
0 Set Max.
on
off
0 Set Max.
on
1 2 3
No, , ,COM NC
1 4 2 5 3 6
1 2 3
1 2 3 4 5 6

1)
2)
3)
4)
5)
6)
7)
Store this product free of moisture, vibration, dust or corrosive gas.
Avoid higher temperature than specified in this manual.
Be prepared for lightning or vapor.
Avoid direct sunlight.
Use M5 bolts when fixing the product to the panel or wall through fixing holes. When you use fittings, fix them firmly.
Use a flexible tube for the impulse line to prevent excessive force on the pressure gauge.
For pipe connection, do not grab and turn the product case, rather use a designated spanner.
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10. Installation
1)
2)
3)
4)
5)
6)
7)
Do not impose excessive force on the casing.
Use plastic insulated or cabtyre cables corresponding to the load.
Use an M4 solderless terminal for firm terminal connection.
Check the contact type before cable connection.
In case of conduit type, use waterproof sealing fittings.
In case of cable gland type, use waterproof cable glands.
A ground wire shall be at least 0.7sq.
11. Wiring

1)
2)
3)
4)
5)
6)
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10)
The commercial pressure shall be below 75% of the max graduation.
Do not impose a pressure beyond the allowable limit.
Avoid sudden pressure surge or drop.
If there is a risk of pulsation or impact pressure, install overpressure protection device like dampener or gauge protector.
Do not grease the operation parts in the pressure gauge.
The regular inspection shall be made once or twice in 6 months to check contact operation.
If the indication instrument makes a big error, remove it from the product for inspection.
It may have been caused by wear, corrosion, external shock, vibration, or shock of a part.
In this case, you must remove, adjust, or exchange the part.
The standard rated current shall follow 5. 1) but it may be different when the product is equipped with a special micro software.
Please, add some allowance to the rated current written in this product, considering the inrush current.
The micro switch contact resistance is destined to increase gradually as per the elapsed time.
Under minute load in Si environment, in particular, SiO2 which is accompanied by contact operation may deposit on the contact to increase
the contact resistance abruptly, so you must ventilate or move to a clean environment. When you use the product for control sequence input,
there is more possibility of contact disorder, so please use an AC 110/220V buffer relay between the contact and the sequence.
Before you open or close the cover for pressure gauge repair or inspection, be sure to shut off the power.
Malfunctioning of the switch may ignite the explosive gas in the gauge.
12. Maintenance and Operation
16

P953
P970
Explosion Proof Pressure Switch
Differential Pressure Switch
Manual

01. 개요
02. 용도
03. 특징
04. 보증
05. 주요 사양 및 외부 치수
06. 운반, 보관 및 개봉 시 주의사항
07. 내부기구
08. 작동원리
09. 접점 작동에 따른 종류 및 결선
10. 취부
11. 배선
12. 보수 및 사용상의 주의
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한국어

■ 경고
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압력 범위를 초과하는 압력을 가하지 마십시오.
부식성이 있는 측정 유체에는 사용하지 마십시오.
압력 측정 소자의 파손이나 파열로 측정 유체가 방출함으로써 인체 손상이나 주위를 파괴하는 원인이 된다.
과대한 하중, 진동, 충격은 주지 마십시오.
제품의 파손이나 파열로 측정 유체가 방출함으로써 인체 손상이나 주위를 파괴하는 원인이 된다.
사용온도 범위내에서 사용하십시오. (* Ambient : -40 ~ 65 ℃, * Fluid : Max. 100 ℃)
사용온도 범위를 초과하여 사용할 경우 압력계의 고장이나 파손으로 주위를 파괴하는 원인이 된다.
사양서에 정해져 있는 정격 입출력 사양의 범위에서 사용하여 주십시오. 장치 고장의 원인이 될 수 있습니다.
전선의 끝 단은 절연 피복이 있는 압착단자를 사용하여 주십시오.
케이블 그랜드는 동일한 방폭 등급 및 상위 등급을 사용하여 주십시오.
배선에서는 내선규정, 전기설비기술기준에 맞게 시공하여 주십시오.
압력스위치를 취외할 때는 반드시 밸브를 잠그고 측정 유체가 나오지 않도록 하십시오. 측정 유체가 방출하면 주위를 파괴할 가능성이 있습니다.
측정 유체가 산소일 때 금유(USE NO OIL) 처리를 한 압력스위치를 사용하십시오.
일반 제품에서는 내부에 오일이 남아 있을 경우가 있어 산소와 반응하여 발화 또는 폭발의 위험이 있습니다.
현장 설치 시 반드시 취급설명서의 취부 요령에 따라 설치하여 주십시오.
제품 자체의 개조, 또는 새로운 기능을 추가하기 위한 개조 등은 하지 마십시오. 수리는 당사와 반드시 상담하여 주십시오.
본 제품의 케이스를 열 때는 반드시 밸브를 잠그고 사전에 압력을 차단하여 주십시오.
통전 중에 배선 작업을 하면 감전의 위험이 있으므로 전원의 차단을 필히 하여주십시오.
이 제품을 바르고 안전하게 사용하기 위하여 사용 전에 이 취급 설명서를 잘 읽어주시기를 바랍니다.
취급 시의 오류는 기기고장의 원인이 되며, 상해나 사고 등의 재해가 발생할 수 있습니다.
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바르고 안전한 사용을 위한 취급 설명서
한국어