ADT878-425 Reference Class Dry Well Calibrator

ADT878-425 Reference Class Dry Well Calibrator

SKU: ADT878-425


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Additel are taking temperature calibration to the next level with the ADT878 Reference Dry Well Calibrators. If you are looking for the best dry well on the market, then look no further! Additel’s commitment to continuous improvement, quality and time saving features are on full display in the ADT878 series. The ADT878-425 will provide stable temperatures from 33 to 425°C. The Process Calibrator option adds an external reference input, a two-channel readout for UUT’s and a full complement of capabilities to help with everything from measuring temperature sensors, to calibrating thermocouples, self-calibrating the Reference Well and configuring HART transmitters. Each unit comes standard with a large touchscreen display, dual-zone control and Additel’s commitment to the best customer service in the industry. You will be blown away by the outstanding performance of these game-changing Reference Dry Wells!


Process Calibrator Option

Each model can be purchased with our Process Calibrator (PC) option. This option combines the many features found in a fully functional HART documenting process calibrator with the reference grade dry well. This option includes the ability to measure a reference PRT, with virtually any connection type, and two device under test channels which can measure, mA, voltage, switch, RTD or thermocouple. In addition to these measurement functions, this calibrator has full documenting capability of creating tasks, saving as found and as left results, as well as communication with HARTsmart transmitters. The process calibrator option also has an on board full HART communicator which allows users to read, configure and calibrate HART transmitters. The snap shot feature allows you to capture all information displayed on the screen with the push of a button. This optional add-on allows for data logging of all channels on an auto step function. By utilizing the reference PRT, you can select to control to the dry well set point using the internal sensor or the external reference PRT.


Self Calibration

We believe using an external reference probe as your standard is the best way to perform your temperature calibration. But we also recognize this method is not always necessary or convenient and depending on the application, using the internal control sensor would be preferred. Traditionally, the internal control sensor has a wide accuracy which can largely be contributed to its long-term drift. We’ve built-in a self-calibration feature allowing you to run an automated calibration of the internal control sensor using your external reference. With literally a few selections the calibration will run automatically giving you a fresh, traceable calibration of the control sensor which will improve its accuracy as you will not have to account for its long term drift when used as the reference.


View Thermocouple Calibration Furnaces


  • 33 to 425°C temperature range
  • Reference Level performance in accuracy, stability and uniformity
  • Quick to temperature
  • PC model has 2 channel readout, measures RTDs and TCs and task documentation
  • Full HART communication (PC option)
  • Wi-Fi and Bluetooth capable
  • Colour touch screen display
  • Quick push electrical connectors (PC option)
  • Set point control via reference (PC option) or internal sensor
  • Self-calibration feature (PC option)
  • Additel Link App for remote control