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Themperature Transmitter Thermal Resistance or Thermocouple
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With Themperature Transmitter Thermal Resistance or Thermocouple |
(1)Principle of Operation
The thermal resistance and thermocouple are used as a temperature sensor, when it is effected by different temperatures, a sensing signal will be obtained through internal measuring loop, then it is converted, amplified properly and compensated, after that, the voltage signal will be used for controlling constant current circuit finally, a direct current signal of 4～20mA.DC will come out:which is linear with the measured tempwrature.
(2)Technical Parameter
1.Explosion-proof type in explosion-proof grade dII BT4, iaIICT5,iaIICT6
2.Insulance:The insulance resistance between the external terminal and the enclosure is no less than 50MΩ.
3.Tolerance limit
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Grade |
Thermal resistance type |
Thermocouple type |
A |
±(0.1%F.S+Thermal
resistance tolerance) |
/ |
B |
±(0.2%F.S+Thermal
resistance tolerance) |
±(0.2%F.S+Thermocouple
tolerance) |
C |
±(0.5%F.S+Thermal
resistance tolerance) |
±(0.5%F.S+Thermocouple
tolerance) |
4.Condition voltage: 24V.DC±10%
5.Load resistance:1100Ωmax (Under the condition of 360V) |
| (3) Basic Joint Screw Means |
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(4) Model
 Intrinsic safety type thermal resistance or thermocouple transmitter ▢-WZPKJ▢-▢40i ▢-WR▢KJ▢-▢4▢i
Integration thermal resistance or thermocouple transmitter ▢-WZPKJ▢-▢30 ▢-WR▢KJ▢-▢3▢
Any thermal resistance or thermocouple can be used with additional transmitter to enhance the functions. |
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(USA
HONEYWELL ROSEMOUUNT MOORE Deutschland GMC Eng STATUS etc.) |
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