Thermocouple compensation wire armoured thermocouple ( Resistance) The influence and the application

Thermocouple compensation wire, within a certain temperature scale ( Contains normal temperature 0) Matching with the thermocouple thermoelectric emfs as nominal value pair with the insulation layer to the conductor, with their cohesion thermocouple and measuring equipment, to compensate for a change of linking to the thermocouple temperature errors.

because armoured thermocouple data generally compared to precious ( Especially when choosing precious metals) , temperature measuring points to the appearance of the distance is far away, in order to save armoured thermocouple data, reduce costs, generally choose the thermocouple compensation wire armoured thermocouple cold end ( The free end) Extended to the stability control of indoor temperature contrast, cohesion to the appearance on the terminal. It is important to note, the effect of thermocouple thermocouple compensating cable only extend thermal electrode, the armored thermocouple cold end moves to control room appearance on the terminal, it itself does not eliminate the cold end temperature change influence on measuring temperature, no compensation effect. Therefore, still need to choose other correcting method to compensate of the cold end temperature t0 indicates influence on measuring temperature 0 ℃. The use of armoured thermocouple type thermocouple compensation wire it necessary to pay attention to match, can't wrong polarity, thermocouple compensation wire and motor dedicated cohesion of the thermal resistor temperature should not exceed 100 ℃.

thermocouple compensating conductor is to extend the effect of multipoint hot electrode and mobile thermocouple cold end, and appearance appearance connection form a multi-point temperature measurement system. Thermocouple compensation wire insulation layer and protective layer selection of imported high quality fluorine plastic, and use all the new technology of successive extrusion, make the goods has excellent acid, alkali, wear resistance, and don't delay function, can be immersed in oil and water medium and long term use. Thermocouple compensating conductor temperature in - 60 - 260 ℃, due to this the international advanced level. Thermocouple thermocouple compensating cable is applicable to electric power, metallurgy, petroleum, chemical industry, textile industry and national defense, scientific research and other parts such as automatic temperature measuring appearance of multipoint bridging.

in order to progress armoured thermocouple connection line of resistance to disturb, can choose shielding thermocouple compensating conductor. About the trouble source more occasions, the effect is better. But must will shield severely grounding, or shield not only didn't have the shielding effect, increase trouble instead.

general armoured thermocouple using thermocouple compensation wire length control within 15 meters of the contrast is good, if more than 15 meters, advocated using temperature transmitter transmit signal. Temperature transmitter is the potential value of the corresponding temperature is converted into direct current stream, strong resistance to disturb. Thermocouple compensating conductor wiring must be far away from the power line and the source of trouble. In the local can't avoid crossing, also as far as possible choose penetration method, not parallel.

type thermocouple compensation wire armoured thermocouple ( Resistance) Features: less hot echo time, reduce the dynamic error; Can install and use; Measuring scale; High mechanical strength, good compression function.