- Calibration of temperature controllers
- Resistance Range: 16.0000 Ω – 400 kΩ
- Resistance Accuracy: +/- 30 ppm
- Temperature Coefficient: < 1 ppm/°C
- Operating Voltage: 200 V
- RTD Temperature Simulation Accuracy: ± 0.01 °C
- User-defined curves (conversion tables)
- Interfaces: RS232 (optional USB, IEEE488)
The Model M631 is a precise RTD simulator with a range from 16 Ω to 400 kΩ. Its basic accuracy is 0.003 %. The best resolution at the lowest range is 100 µΩ. The decade contains stable foil resistors with a low temperature coefficient, switched by low thermal voltage relays. Built-in software includes a function for simulating RTD temperature sensors with parameters according to IEC (DIN) or US standards, and temperature setting in Celsius or Fahrenheit. The instrument can be controlled via RS232, USB, LAN, or GPIB interfaces.
The M631 is a sophisticated instrument featuring its own recalibration procedure. This procedure allows for correcting any deviation in resistance without the need for mechanical adjustment.
This decade box is designed for checking the parameters of resistance meters, regulators, and process meters that use external resistance sensors for measuring non-electrical quantities.
