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DI-1000TC Isolated Thermocouple Measurement Instruments - OBSOLETE (replaced by DI-2008)

Supports most thermocouple types, automatic CJC and linearization

Product Features

  • 1000VDC and Peak AC Input-to-Output and Channel-to-Channel Isolation
  • Supports J, K, T, E, S, B, or R Thermocouple Types
  • Built-in Open Thermocouple Detection
  • High Accuracy and Resolution Design
  • Extremely Wide CJC Range
  • Native RS-422 with Optional USB adaptor
  • RS-422 interface allows remote temperature data acquisition and module expansion over a distance of up to 4,000 feet (over 1.2 kilometers)
  • Daisy chain up to eight 4-channel units (or four 8-channel units)

Products in the Series


DATAQ Instruments' DI-1000TC Series products are a line of instrumentation modules designed for temperature measurements using thermocouples. The unit is provided in 4- or 8-channel versions, and each channel may be configured in software to support one of seven thermocouple types: J, K, T, E, S, B, or R. Temperature measurements may range from -200°C to +1820°C (-328°F to +3308°F), depending upon thermocouple type. Each DI-1000TC thermocouple channel features a panel-mounted, miniature spade connector, and all input channels are electrically isolated from ground and each other up to 1000VDC, or peak AC.

Model DI-1000TC is designed for use across the entire spectrum of temperature measurement applications that use thermocouples. Its small size and wide measurement range make it a perfect temperature measurement device for laboratory applications. Its isolation feature allows it to be used in more demanding industrial applications that experience the large common mode voltages (off-ground measurements) that are typical of grounded thermocouples. Such measurement situations will prevent non-isolated instruments from making a measurement at best, or destroy them in the worst case.

See our page on how to make safe and accurate thermocouple measurements using isolated instrumentation by clicking here.


Multiple DI-1000TC units may be connected individually, or used as expansion units with any combination of other DI-1000 instruments to address any application-specific temperature measurement situation. For example, multiple DI-1000TCs may be connected to each other to provide unique 12, 16, 20, or other thermocouple channel counts.

Built-in RS-422 Interface

The built-in RS-422 interface allows DI-1000TC units to connect to any host PC through an inexpensive adapter via a USB port.


The DI-1000TC's 1000VDC and Peak AC input-to-output and channel-to-channel isolation allows grounded thermocouple measurements.

High Accuracy and Resolution Design

Allows sharpened decisions with an overall accuracy of ±0.2%, and temperature resolution as fine as 0.08°C.


The DI-1000TC is provided in a small (13.81D × 10.48W × 3.81H centimeters; 5-7/16D × 4-1/8W × 1-1/2H inches) enclosure consisting of an aluminum base and all-steel wraparound.

Primary Customers

Those who need a PC-based thermocouple temperature measurement instrument for laboratory or classroom use. Examples include physics, chemistry, biology, and any other discipline that requires accurate and ready-to-run temperature measurements. Those who require a rugged and flexible device for temperature measurements using thermocouples in industrial settings where off-ground measurements are common. Specific applications are temperature measurements in:

  • Steel and aluminum smelting operations
  • Annealing operations
  • Hydraulic pumps, fluids, and motors
  • Steam, gas, and hydraulic turbines
  • Machine tools
  • Motors and generators
  • Rolling mill machinery and equipment
  • Electric and gas welding and soldering equipment
  • Industrial and commercial fans and blowers and air purification
  • Industrial process furnaces and ovens
  • Induction heaters
  • And many, many more...

Includes WinDaq Software

Be up and running minutes out of the box with WinDaq acquisition and playback software. WinDaq software is included free with the purchase of every DI-1000TC instrument.

WinDaq Waveform Browser, our playback and analysis software for Windows, is distributed free with WinDaq. It is also available for download free-of-charge from this Web site. Use it to review, measure, compare, and analyze the waveform file after it has been recorded by WinDaq acquisition software. WinDaq software products support up to 14 bits of measurement resolution.

WinDaq uses the NIST ITS-90 Thermocouple Database for thermocouple linearization.