ES420 – Thermo Module

The ES420 module supports a wide variety of thermocouples to provide for measurements within the desired temperature ranges. With type B thermocouples, temperature values of up to 1820 °C (3308 °F) are accessible. The modules are able to adapt to the thermocouple type because it is encoded in the splitter cable used to connect up to 8 temperature sensors of one type. To provide for the capture of fast temperature changes, the sampling rate of each channel is configurable to a maximum of 50 Hz.

The plugs of the splitter cables accommodate high-precision cold-junction compensation; this feature, a low temperature coefficient, and electrical isolated channels, combine to ensure accurate temperature measurements. For quick and easy access, channel configurations can be stored onboard the ES420.


  • 8 electrically isolated thermo channels
  • Supports thermocouples of type B, E, J, K, N, R, S, and T
  • Automatic detection of thermocouple type and open wires
  • Channel wise configurable sampling rate between 0.1 Hz and 50 Hz
  • Precise cold-junction compensation
  • Operating temperatures from -40 °C to 120 °C (-40 °F to 248 °F)