1. Wide working environment temperature: -40 ~ + 85 ℃;
2. Intelligent temperature compensation, using imported low temperature drifting devices, full digital calibration, no movable potentiometer, the whole machine drifts at extremely low temperature. Thermocouple cold junction compensation accuracy is high, within -40 ~ + 80 ℃ compensation accuracy ± 0.5 ℃; epoxy resin potting, good seismic performance, high reliability;
3. Dedicated custom ASSIC circuit, higher integration, better reliability. Enhanced EMC anti-interference design, hardware watchdog, amplification of sensor analog signals uses a true zero-drift instrumentation amplifier, very high DC and AC common Mode suppression ability, effectively suppress the interference signal induced on the sensor lead, enhance anti-interference ability, suitable for various industrial environments with harsh electromagnetic environment;
4.The transmitter uses a 24-bit high-precision ADC to digitize the analog voltage to ensure that signals with large dynamic range changes can be accurately and stably converted into digital quantities;
5.Using ultra-low-power devices to ensure the low-power characteristics of two-wire system 4 ~ 20mA, leaving a very generous anti-disturbance design, better anti-interference ability, signal lossless remote transmission;
6. The P100 adopts a real dual constant current source excitation and a true three-wire connection method to effectively suppress the impact of the change in lead resistance on the accuracy of the instrument. ITS-90 international temperature scale calculation, high accuracy, no non-linear error. Specially designed temperature offset function, no matter whether the sensor is positive or negative difference, the zero error of the sensor can be artificially offset to ensure the consistency of each batch of products, suitable for mass production of consistent temperature transmitters. The analog output link uses a dedicated DAC circuit and a V / I conversion circuit, with high anti-interference and high stability. Simple and fast calibration process, just need to calibrate the resistance and set the transmission range to complete the calibration of a transmitter;
7. Use standard single-line communication interface to communicate with the computer. Only one line of communication can realize the two-way communication function with the computer. For this purpose, a USB to single-line data communication interface is specially provided. Dedicated calibration configuration software, all digital calibration, digital calculation, to ensure that there are no errors in the signal processing stage, the software has a user version and a factory version, and the user version cannot modify the calibration parameters;