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ADT875 Series Dry Well Calibrator

If you are serious about portable temperature calibration tools, then you know a good dry well calibrator is more than just a stable heat source.
The Additel 875 Series Dry Well Calibrators combine excellent performance in stability, radial and axial uniformity and loading. These dry blocks are fast, rugged, intuitive and have great portability especially when used in conjunction with its specially designed wheeled case.

The Process Calibrator option adds the capabilities of a three-channel thermometer readout and a documenting process calibrator. Each unit has a colour touch screen display, dual-zone control, and much more.
You are just going to love these new dry wells!


> Three models ranging from -40 °C to 660 °C
> Portable, rugged, and quick to temperature
> Metrology-level performance in stability, uniformity, accuracy and loading effect
> Dual-zone control
> Process calibrator option provides a multi-channel readout for a reference thermometer, RTDs and TCs, task documentation, and HART communication
> Colour touch screen display
> Choose your own range option
> Set point control by reference
> Self-calibration feature


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. Additel have 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.


Each model on offer has a Process Calibrator (PC) option. This process calibrator option combines the many features found in a HART documenting process calibrator with the temperature dry well. This option includes the ability to measure a reference PRT 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, and HART communication.
The snap shot feature allows you to capture all information displayed on the screen with the push of a button.
This unit also allows for data logging of all channels on an auto step function and a ramp 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.


The ADT875 also has a unique option to select your own temperature range within the range of the model selected. We're calling this the CYOR option or Choose Your Own Range option. When you purchase the CYOR option, you pick the upper and lower temperature range needed and we calibrate and optimize the dry well's performance over your selected range.

Check out the attached pdf Data Sheet and contact us for further information.


If you are not sure what you are after or are in a hurry, call us today and talk to an expert on industrial instruments.

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+64 9 633 0040
5 / 343 Church Street | Onehunga
Auckland 1061, New Zealand