In the previous article we have introduced the characteristics of the integrated temperature transmitter and some precautions, integrated temperature transmitter is pt100 sensor under the influence of temperature resistance effect, the special processing unit converted to produce a differential voltage signal, this signal through a special amplifier, the range of the corresponding signal into a standard analog signal or digital signal. It should be noted that, due to the specificity of the instrumentation, the transmitter will have a certain amount of annual drift, which is a normal phenomenon, during its service life, if there is a zero point and full scale drift, you can return to the manufacturer for recalibration to ensure the accuracy of the transmitter. Integrated temperature transmitter is the same. So, how to distinguish whether the integrated temperature transmitter drift in the use of the scene? We use the following calibration method can be timely and easy to detect the integration of temperature transmitters of this problem. First, we need to prepare a multimeter. Next, the integrated temperature transmitter will be connected to the rated power supply, the load side connected to the sensor RTD. Integration of temperature transmitter output two terminals connected to the multimeter, gear for DC current gear. If the range of pt100 for -20 to 80 degrees, 4-20ma is 16 scale value, that -20 ℃ is 4ma, now the room temperature of 30 degrees, the current value is 12ma, and so on to detect the accuracy of the transmitter measurement. In this way, we can use the site of the integrated temperature transmitter for basic calibration. Ensure the normal function of the transmitter. For product consultation, product customization, agency, technical inquiries, quotes and any other questions, please contact Star Sensor hotline: 400-600-4496 !