Thermocouple Conditioner

Precision Conditioning for Static (DC) or Dynamic (AC) Temperature Measurements

The 28208 8-Channel Thermocouple Conditioner provides eight channels of conditioning for all commonly used thermocouple types. The 28208 consists of a low-drift programmable differential pre-amplifier, a 3-pole programmable filter and a programmable post-filter amplifier. The remotely located Isothermal block with integral digital temperature sensor provides screw terminal connection to the thermocouple wires with better than 0.6 degree accuracy in reference junction compensation.

The 28208 8-Channel Thermocouple Conditioner is a member of the Precision 28000 family of signal conditioners.

The 28000 Signal Conditioning System

Learn more about the 28000 Signal Conditioning System >

  • The 28208 8-Channel Thermocouple Conditioner with the isothermal block

    The 28208 8-Channel Thermocouple Conditioner shown with the optional Isothermal Block


    • Static (DC) or Dynamic (AC) Temperature Measurement
    • Low-Level DC or AC Filter Amplifier (<1 mV to 10 V Inputs)

28208 8-Channel Thermocouple Conditioner Features:

  • Precise cold junction compensation for type B, E, J, K, N, R, S and T thermocouples
  • Programmable gain: x1, 10, 100, 1000
  • Programmable 3-pole Bessel low-pass filter (1, 10, 100 Hz and wideband)
  • Remote isothermal block with digital temperature sensor
  • Automatic adjustment of DC offset
  • Low offset temp coefficient: 0.5 mV/°C max
  • Open thermocouple detection
  • Overload detection
  • 128 channels per 28016 chassis
    64 channels per 28008 chassis
    32 channels per 28004 chassis

View the 28208 8-Channel Thermocouple Conditioner Specification Sheet >