Compensation conductor of armoured thermocouple ( Resistance) The influence and application of the release date: 2019 - 06 - Read number 10:0 times

Compensation conductor is 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 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 compensation wire 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 ℃. It necessary to pay attention to the use of armoured thermocouple compensation wire type suitable, the polarity can't wrong, compensation conductor and motor dedicated cohesion of the thermal resistor temperature should not exceed 100 ℃. Compensation 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. Compensation wire insulation layer and protective layer selection of imported high quality fluorine plastic, and 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. Temperature compensation conductor should be applied in - 60 - 260 ℃, due to this the international advanced level. Thermocouple compensation wire applied 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 compensation 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. Armoured thermocouple commonly used compensation conductor should be the length of the manipulation of the good within 15 meters of the contrast, 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. Compensation 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. Compensation conductor type sheathed thermocouples ( Resistance) Features: less hot echo time, reduce the dynamic error; Can install and use; Measuring scale; High mechanical strength, good compression function.