Temperature Transmitter
Description
The Knick P44000 is a high-voltage-rated temperature transmitter that converts Pt100 resistance thermometer signals into a precise 4...20 mA output, making it ideal for monitoring thermal conditions on the power electronics, superconducting magnets, and coil windings that are central to nuclear fusion systems. With galvanic isolation rated up to 6,600 V AC/DC and a routine test voltage of 15 kV AC, it safely bridges the gap between high-voltage fusion components and low-voltage control and data acquisition systems without sacrificing measurement integrity. Its vacuum-encapsulated design protects against environmental degradation over time, ensuring that isolation performance is maintained throughout the long operational lifespans expected in fusion research facilities. With a typical measurement error of just ±0.5 K and a fast 100 ms response time, the P44000 delivers the accuracy and speed needed to detect thermal anomalies before they escalate in safety-critical fusion environments.
Technical Specifications
Function: Temperature measurement
Input: 0 ... 100 °C, 0 ... 200 °C, 0 ... 300 °C
Output: 4 ... 20 mA
Isolation AC/DC: up to 2,000 V, up to 6,600 V
Test Voltage: 7.5 kV AC , 15 kV AC
Power Supply: 22 ... 230 V AC/DC
Cutoff Frequency: Cutoff frequency 5 kHz; lower cutoff frequencies on request
Ambient operating temperature: –10 ... 70 °C
Dimensions (W x L x H): 22.5 x 90 x 118 mm, 67.5 x 90 x 118 mm (D3)
Special features: Low measurement error of typically 0.5 K, Short T90 delay time of 100 ms
