RTD sensor built-in transmitter can directly provide accurate input signal of temperature changes for display instruments, recording instruments, signal conditioners, scanister and computer.Specification:
1. RTD temperature range and accuracy chart
Note: t is the actual measuring temperature absolute value of the temperature sensing element. 2. Transmitter parameter chart
3. Meter and protection head type
4. Selection chart
Note: The sensing element is sheath RTD sensor, thermowell material is stainless steel, and circuit adopts non-isolated type. When ordering products, write the thermowell insertion depth l and the corresponding temperature range for output 4~20mA signal you need.Tips: Connection methods of Pt100 RTD sensorPt100 RTD sensor usually has two-wire and three-wire connection methods. The two-wire connection is to connect a wire to both ends of thermistor. This connection method is simple with low cost. But it will bring additional error as the lead resistance becomes one arm of the bridge. Although with each change of 10 degrees centigrade, PT100 only changes 0.39 ohms. But the lead wire of industrial field thermistor is usually long and the lead resistance will certainly affect the result of the measurement. Therefore, Pt100 of two-wire connection is only suitable for short distance application. It is necessary to use three-wire connection in the application of long distance. The three-wire connection is to lead one line at one end of thermistor and the other two lines are led at another end. When the thermistor matches with the measuring bridge, lead resistance is connected to two arm of the bridge circuit, which eliminates the influence of the lead resistance and improves the measurement accuracy.
