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ThermoProbe TL2-A


The TL2-A is a versatile 2-channel precision bench top thermometer offering a convenient USB interface for data logging and sensor configuration. The TL2-A is two thermometers in one instrument, with two channels allowing simultaneous temperature measurement in different locations. The TL2-A is well suited for establishing temperature traceability in equipment that requires high accuracy.

The TL2-A is also perfect for metrology applications and as a calibration reference thermometer.

ThermoProbe TL2-A

The TL2 is a 2-channel precision bench top thermometer offering a higher level of metrology accuracy in a very affordable package. The TL2 is a complete NIST traceable system that is ready to use, right out of the box. Based on successful TL1-R technology, the TL2 has been developed for laboratory applications demanding high precision reference thermometry with the added versatility of 2 channel measurement. To fully realize the benefits of 2 channel measurement, the TL2 provides data logging capabilities with the convenience of PC or USB flash drive interface. The ergonomic design and large display make the TL2 ideally suited for use as a calibration reference thermometer and for recording temperature-time based data.
The TL2 calibration software creates custom coefficients for Callendar Van Dusen or ITS-90 curves using the reference points and TL2 readings. It then loads the coefficients to the TL2 and creates a report for each channel.


  • Display: Large 0.5" ( 1.3cm) character LCD with backlight
    Switchable units °C ,°F,°K or
    Resolution 0.01 , 0.001 or 0.0001 for Ohms
  • User Functions :Switchable units °C ,°F,°K or Ω
    Resolution 0.01 , 0.001 or 0.0001 for Ohms
    Zero Offset adjustment
    Temperature triggered SPDT relay output (Channel 1)
    Stores and displays Average, Lowest & Highest readings.
    Arrows indicating increasing/decreasing temperature.
  • PC & Data Logging Features: Data capture to USB Flash drive saved in CSV format (comma delimited)
    Data capture to PC via HyperTerminal
    Selectable logging intervals and polling mode
    2-Channel Sensor coefficient entry
  • Construction: Rugged powder coated steel enclosure with silicone buttons and a durable polyester graphics window.
    Nominal Body Dimensions: 7.25 x 5.25 x 2.25" (18.4 x 13.3 x 5.7cm)
    Nominal Weight: 1lb.
    10oz (0.74kg)
  • Temperature: Resolution: 0.001 Degrees
    Range: -328°F to 1764°F (-200°C to 962°C)
    -depending on sensor selection
    ITS-90 or Callandar-Van Dusen Linearization equations
    Factory Calibration of TL2-A & PRT system available for
    -40°F to 572°F (-40°C to 300°C) range
  • Sensor/Probe:
    Accepts 100Ω and 200Ω RTD, PRT or SPRT
    4 wire with shield, 5 pin male DIN connector
    Standard sensors:
    – 100Ω wire-wound platinum RTD
    – Stainless steel ¼” sheath 13” long.
    – Provided with a standard 5 foot cable and DIN plug.
    – Custom configurations available upon request.
    – Recommended Minimum Immersion Depth: 4.7" (12cm)
  • Power: 90 ~ 264 VAC External power adapter
    – Country specific adapters available upon request
  • Calibration : NIST Traceable Resistance and Temperature


Icon Label Description Type Size Download
pdf Datasheet TL2-A Datasheet TL2-A pdf 291.3 KB Download
pdf Manual TL2-A Manual TL2-A pdf 1.6 MB Download