Detailed Product Description

The Application of Thermocouple

Thermocouple is usually used with display meter, recording meter and computer etc. to directly measure temperature of liquid ,vapor, gas medium and solid surface ranging from -200^oC to 1300^oC during various production processes with output of 4~20 Ma

Features

1.Multi explosion-proof type, good explosion-proof performance.

2.Spring thermal element with good shock-resistant performance.

3.Wide measuring range.

4.High mechanical strength and good pressure-resistant performance.

The Main Technical Parameters

1.Standard: IEC 584, IEC 1515, IEC 751, GB 3836-2000, JB/T 5518-91, JB/T 7391-94.

2.Output Signal: 4~20Ma, Loading Resistance:250Ω, Transforming Wire Resistance:100Ω.

3.Output Method: Two Wire.

4.Accuracy Class of Temperature Transmitter:0.1, 0.2 ,0.5.

5.Accuracy of Display Meter: Analog lndication Class:2.5.

6.Digital Display Class:0.1.

7.Power Supply:24v.DC±10%.

8.Protection Class: IP65.

9.Explosion-proof Class:

       Explosion-separation: dll BT4, dll CT5, dll CT6

       Intrinsic Safety: iall CT 6.

10.Insultation Resistance:

       Insulation resistance between instrument output wire connecting head and outer case shoule be no less than 50mΩ.

11.Thermal Response Time:

       When the temperature has step-jumping change, the needed time for current output signal of instrument changes to 50% of the step-jumping change, this time is called thermal response time, indicating with t0.5. When step-jumping response stable time of temperature transmitter is no more than 1/5 times of t0.5, thermal response time of instrument shall be considered as the thermal response time of thermocouple(thermal resistance);

       When step-jumping response stable time of temperature transmitter is no more than 1/2 times of t0.5, thermal response time of instrument shall be considered as the thermal response time of temperature transmitter.

12.Basic Error:

      The basic error of instrument should be no less than the compound error caused by thermocouple(thermal resistance) and temperature transmitter.