Description
Product introduction:
Model: WRN
Name: Explosion-proof Thermocouple
Manufacturer: Shanghai Automation Instrumentation Co., Ltd.
Application: WRN series explosion-proof type thermocouple is a temperature sensor. It is widely used in automatic control system of Chemical industry. Through temperature sensor,it can transform the temperature parameters of the control object to electric signals, then delivery them to display instrument ,recorder, regulator, and carry out detection ,control and adjustment to the system. In chemical factories, there are always many flammable and explosive chemical gas, steam, hydrocarbon etc. in production field. It is very dangerous to use normal thermocouple, and will cause explosion of environment gas easily. So, we must use explosive-proof or intrinsic safety type thermocouple as temperature sensor in these places. Besides, it has Multiple explosive-proof types, good explosion-proof performance, compression spring type thermal components, good anti-vibration performance, high mechanical strength and good pressure-resistant properties.
Temperature range and accuracy:
|
Type |
Degree |
Temperature Range℃ |
Accuracy Class |
Allowable Deviation △t ℃ |
|
WRN |
K |
0～800 |
I |
±1.5℃/±0.004%∣t∣ |
|
Ⅱ |
±2.5℃/±0.75%∣t∣ |
Note: “t” is absolute value of measured temperature of temperature-sensing element.
Explosion-proof type and grade:
|
Explosion-proof grade: |
dⅡBT4/dⅡCT4 dⅡBT6/dⅡCT6 |
|
Intrinsic safety grade: |
iaⅡBT4/iaⅡCT4（multiplex type） iaⅡBT6/iaⅡCT6（multiplex type） |
|
Enclosure protection class: |
IP65 |
Model selection:
|
W |
R |
Thermocouple |
Content |
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|
|
|
M |
NiCrSi-NiCr |
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|
N |
NiCr-NiSi |
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|
E |
NiCr-CuNi |
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C |
Cu-CuNi |
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F |
Iron-CuNi |
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|
Code |
Couples of thermal wires |
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|
None |
Single branch |
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2 |
Dual-branch |
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|
Code |
Fixed installation type |
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|
1 |
No fixed device |
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2 |
Fixed thread |
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|
4 |
Fixed flange |
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|
5 |
Loose coupling type |
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|
6 |
Fixed thread tapper tube type |
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|
Code |
Junction box type |
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|
4 |
Flame-proof type |
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|
Code |
Protection tube diameter |
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|
0 |
16mm |
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|
|
Code |
Working side form |
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|
K |
Armoured filling |
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