RTD Temperature Measurement Module

The M390 is a 6-channel RTD Measurement M-Module that provides high-accuracy temperature measurement data for industrial automation applications to ensure both product quality and safety.

The M390 features six 2-, 3-, or 4-wire high accuracy RTD measurements channels and is available in four versions:

  • PT100 measurement
  • PT200 measurement
  • PT500 measurement
  • PT1000 measurement

Data acquisition is performed by an embedded DSP, transparent for the user, and the conversion result is stored in dual-ported memory. Conversion data can be stored in four different, and per channel selectable, data formats (Celsius, Fahrenheit, Kelvin and Ohms).

Each channel features upper- and lower-alarm levels. If the input goes beyond this range, an interrupt to the host can be issued. The acquisition time is 133 milliseconds for one channel. For each additional enabled channel, 66 milliseconds must be added. The M390 features autocalibration and optical isolation.

The M390 is also available as a PCI, CompactPCI (3U and 6U) and VMEbus (3U and 6U) product.

  • Supports PT100, PT200, PT500 or PT1000 sensors
  • Supports 2-, 3-, or 4-wire RTD devices
  • Internal 16-bit measurement
  • PT100 linearization (IEC751-1983, DIN43760-1980, JIS C1604-1989)
  • Programmable min/max alarms
  • Autocalibrating, no potentiometers
  • Optical isolation
  • Measurement Range: -20°C to +85°C
  • Update rate up to 7.5Hz
  • Identification EEPROM