Technical description

The M9123 temperature transmitter is available in two different variants:

- For Eurocard 19" rack mounting, hazardous / non hazardous area
- For DIN Rail enclosure, hazardous / non hazardous area.

The standard transmitter uses Pt-100 platinum sensors and has a programmable measuring range from -100 to +250ºC. Other sensors, for example Pt-500 or Pt-1000, are also available on request. Temperature ranges exceeding the standard range can be ordered as an option. The basic accuracy of the instrument is ±0.1%. It is powered by a 24VAC/DC universal power supply.

Ranges and the sensor wiring is programmed with DIL switches. The sensor signal is linearized and converted into a current signal of either 0...20mA or 4...20mA. Sensor circuit, output current source and supply power are galvanicly separated from each other. With the hazardous version, sensor and signal current output can be fed into the hazardous area. The instrument itself has to be mounted outside the hazardous area!

If any one of the three or four sensor connections is broken, the instrument's output current will be between 24...27mA.