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RTD Thermometers


Platinum RTD-Based Measurements

Advanced Energy's 868 and 869 100 Ω RTD thermometers are the only handheld RTDs that accept three-wire and four-wire platinum probes and provide repeatable accuracy of 0.3ºC. They are ideal for cryogenic and high-temperature research or industrial monitoring.


  • Accuracy: ± 0.4 °F
  • Range : -360 to 1100 °F
  • Resolution : 0.1°/1°
  • Input Type : 100 Ω Platinum RTD
  • Low battery indicator
  • Big, easy to read LCD display
  • NSN: 6625-01-199-0673
  • One year warranty
  • Assembled in the USA


  • Works with either 3- or 4-wire RTDs
  • Easy operation
  • Case is constructed from heavy duty ABS for enhanced durability


Connector Type: TA4
No. of Inputs: 1
Probes Supported: RTD
Temp. Scale: C, F

Stock Check

Model Number
Connector Type No. of Inputs Probes Supported Temp. Scale Buy
868 Active
Platinum RTD Thermometer °F (not CE certified)
TA4 1 RTD F Buy
869 Active
Platinum RTD Thermometer °C (not CE certified)
TA4 1 RTD C Buy

Recommended Probes (Note, thermometers do not include temperature probes.)


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Technical Documentation


Calibration and Alignment

Advanced Energy has the tools and processes to ensure your equipment continues to meet its original specifications.  Our products are calibrated at global AE service sites with proprietary technology designed to exceed industry standards​.

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Our worldwide service centers provide fast cycle times, use only AE-qualified parts, and follow the original product's specifications and test procedures for the highest quality repair or calibration.

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