Thermistor temperature sensor MT-B11

4-20 mAbuilt-in transmitterprecision

The CNPS-MT-B11 type drilling fluid temperature sensor is composed of a temperature detector and a transmitter. When the drilling fluid temperature changes, the resistance of the temperature sensor in the temperature sensor detector changes correspondingly, and the change is linear with the temperature change. The transmitter converts the resistance change to 4-20 mA standard DC current signal. Adjust the resistance value of the precision resistance box to 100_and observe the change of the output current value of the sensor. The current value should be 4 mA at this time. If the display value deviates greatly, the zero potentiometer of the transmitter should be adjusted so that the output current value of the sensor is 4 mA. Adjust the resistance value of the precision resistance box to 138.5_and observe the change of the output current value of the sensor. The current value should be 20 mA at this time. If the display value deviates greatly, the gain potentiometer of the transmitter should be adjusted so that the output current value of the sensor is 20 mA. 5 maintenance the transmitter part must be sealed to prevent water from damaging the transmitter. the mud should be adhered to the temperature sensor and should be cleaned in time to ensure the reliable and accurate operation of the sensor. When the temperature sensor is in use, it should check whether the cable is broken, short circuit and the connection head is off. Temperature sensor fault, can be used multimeter resistance to measure the Pt100 thermistor lead both ends, there should be 100-140_between the resistance, otherwise check whether the sensor is open or the connection of the Pt wire is not good contact.