Additel ADT 875-660 is a powerful dry well calibrator designed for professional temperature calibration from 33 °C to 660 °C. The compact system combines high temperature stability with fast temperature control, modern operation and flexible expansion options. This makes the Additel ADT 875-660 an excellent solution for calibration laboratories, quality assurance, maintenance, research and numerous industrial applications.

With temperature stability down to ±0.04 °C and a resolution of 0.01 °C, the Additel ADT 875-660 provides a stable temperature source for demanding comparison calibrations. Excellent axial and radial temperature uniformity supports reproducible measurement results when calibrating different temperature probes.

Under specified conditions, the dry well reaches 660 °C from 33 °C in approximately 15 minutes. This allows different calibration points to be reached quickly and reduces waiting times during multi-point calibrations. The large 6.5 inch color touchscreen provides intuitive operation and a clear overview of all relevant information.

At europascal, you can obtain the Additel ADT 875-660 together with expert advice on selecting the appropriate configuration, inserts and options for your individual calibration requirements.

Your Benefits at a Glance

• Temperature range from 33 °C to 660 °C
• Temperature stability down to ±0.04 °C
• Display accuracy up to ±0.5 °C at 660 °C
• Temperature resolution of 0.01 °C
• Excellent axial and radial temperature uniformity
• Fast heating times
• Approx. 15 minutes from 33 °C to 660 °C
• Approx. 23 minutes from 660 °C to 100 °C
• Interchangeable inserts for different probes
• 6.5 inch color touchscreen
• Temperature display in °C, °F and K
• USB A and USB B
• LAN via RJ45
• WiFi and Bluetooth
• Optional integrated Process Calibrator
• PRT and RTD measurement with Process Calibrator option
• Thermocouple measurement with Process Calibrator option
• Temperature switch testing
• Temperature transmitter testing
• HART communication with corresponding option
• Calibration task documentation
• Self calibration function with external reference
• Automatic Step and Ramp functions
• Additional temperature ranges available within the ADT 875 product family

Ideal for Demanding Calibration Applications

The Additel ADT 875-660 was developed for users requiring a stable, flexible and easy to operate temperature source for recurring calibration tasks. Its temperature range from 33 °C to 660 °C covers numerous industrial and metrological applications.

Typical applications include:

• Calibration laboratories
• DAkkS accredited calibration laboratories
• In house calibration laboratories
• Quality assurance
• Maintenance
• Research and development
• Energy supply
• Process industries
• Mechanical and plant engineering
• Pharmaceutical industry
• Food industry
• Temperature sensor manufacturers
• Production and manufacturing testing

The ADT 875-660 can be used to test and calibrate different temperature probes under controlled conditions. These include resistance thermometers, PRTs, RTDs and thermocouples. With the optional Process Calibrator configuration, the application range can additionally be extended to temperature switches and temperature transmitters.

For regular verification of your temperature measuring equipment, europascal also provides a professional Calibration Service for temperature and other measurement quantities.

Flexible Configuration

A major advantage of the Additel ADT 875-660 is its flexible adaptation to different calibration tasks. Various inserts are available for the dry well, allowing temperature probes with different diameters to be correctly positioned inside the calibration block.

The optional ADT 875PC Process Calibrator configuration provides particularly extensive capabilities. It expands the temperature source with additional electrical measurement functions, allowing reference probes and devices under test to be measured directly by the calibrator.

The Process Calibrator option supports PRT and RTD sensors as well as numerous thermocouple types. Two RTD channels are available for 2-wire, 3-wire and 4-wire resistance thermometers. Two measurement channels are also provided for thermocouples.

Current and voltage can additionally be measured, mechanical or electrical switches can be tested and 24 V DC can be supplied to suitable transmitters. With optional HART functionality, compatible intelligent transmitters can be read, configured and calibrated.

The documentation function enables storage of up to 1,000 calibration tasks together with the corresponding results. The ADT 875-660 can therefore be used not only as a temperature source but also as a comprehensive tool for structured and documented calibration processes.

Technical Highlights

• Temperature range: 33 °C to 660 °C
• Display accuracy: ±0.3 °C at 33 °C
• Display accuracy: ±0.3 °C at 420 °C
• Display accuracy: ±0.5 °C at 660 °C
• Stability over 30 minutes: ±0.02 °C at 33 °C
• Stability over 30 minutes: ±0.03 °C at 50 °C
• Stability over 30 minutes: ±0.04 °C at 420 °C
• Stability over 30 minutes: ±0.04 °C at 660 °C
• Axial uniformity at 60 mm: up to ±0.5 °C at 660 °C
• Radial uniformity: up to ±0.1 °C at 660 °C
• Temperature resolution: 0.01 °C
• Temperature units: °C, °F and K
• 6.5 inch color touchscreen
• Heating time from 33 °C to 660 °C: approx. 15 minutes
• Cooling time from 660 °C to 100 °C: approx. 23 minutes
• USB A and USB B
• LAN via RJ45
• WiFi
• Bluetooth
• Optional Process Calibrator
• Optional HART communication
• Self calibration with external reference

Technical Specifications

Why Choose the Additel ADT 875-660?

The Additel ADT 875-660 combines a wide industrially relevant temperature range with high stability and convenient operation. Its range from 33 °C to 660 °C makes the instrument particularly versatile and enables numerous temperature probes to be calibrated using a single temperature source.

Temperature stability is an important factor in comparison calibrations. Additel specifies stability of up to ±0.04 °C over 30 minutes for the ADT 875-660. At the lower end of the range, values down to ±0.02 °C are achieved.

Temperature uniformity is also optimized for professional calibration tasks. Good axial and radial temperature distribution reduces temperature differences between the reference probe and device under test, supporting reproducible comparison measurements.

Another important advantage is speed. Under specified conditions, the instrument requires only approximately 15 minutes to heat from 33 °C to 660 °C. Cooling from 660 °C to 100 °C takes approximately 23 minutes. This reduces waiting times during calibrations involving multiple temperature points.

The 6.5 inch color touchscreen supports intuitive operation. Modern USB, LAN, WiFi and Bluetooth communication options also simplify integration of the calibrator into digital laboratory and test processes.

With the Process Calibrator option, the system can be expanded considerably. In addition to providing a stable temperature source, electrical signals and different temperature sensors can be measured directly. HART communication, documentation and self calibration functions make the ADT 875-660 a versatile platform for professional temperature calibration.

Additional Models in the Additel ADT 875 Series

In addition to the Additel ADT 875-660, Additel offers several models for different temperature ranges. This allows the ADT 875 product family to be matched precisely to the requirements of a calibration laboratory or industrial application.

The Additel ADT 875-155 covers a temperature range from −40 °C to 155 °C. This version is particularly suitable for low temperature applications and enables calibration points significantly below ambient temperature.

The Additel ADT 875-350 provides a temperature range from 33 °C to 350 °C. It is an attractive alternative for users whose calibration tasks are primarily in the low and medium positive temperature range and who do not require the extended range of the ADT 875-660.

The Additel ADT 875-660 extends the temperature range up to 660 °C, making it the high temperature model within the conventional ADT 875 dry well series. It is suitable for users who want to cover a particularly wide positive temperature range with a single instrument.

For applications above 660 °C, the Additel ADT 875-1210 provides a high temperature solution up to 1,210 °C. This model is part of the 87X-1210 thermocouple calibration furnace series and is designed for demanding high temperature thermocouple calibration.

Which version is most appropriate depends on the required temperature range, sensor types, target measurement uncertainty and calibration procedure. europascal can assist you in selecting between the ADT 875-155, ADT 875-350, ADT 875-660 and ADT 875-1210.

Typical Calibration Applications with the Additel ADT 875-660

The Additel ADT 875-660 is suitable for numerous applications in professional temperature metrology. Typical applications include comparison calibration of resistance thermometers, PRTs, RTDs and thermocouples.

During comparison calibration, the device under test and reference probe are positioned in an appropriate dry well insert. After the required temperature has been set and sufficient stability has been achieved, the measurement values can be compared and documented.

With the Process Calibrator option, many of these tasks can be performed directly using the ADT 875-660. In addition to PRT and RTD sensors, thermocouples, temperature switches and temperature transmitters can be tested. Optional HART communication extends the possibilities for intelligent temperature transmitters.

For lower temperatures, the Additel ADT 875-155 is suitable, while the Additel ADT 875-350 covers temperatures up to 350 °C. For calibration above 660 °C, the Additel ADT 875-1210 provides a solution for high temperature applications up to 1,210 °C.

The Additel ADT 875 product family therefore provides a graduated selection for a wide variety of temperature ranges. The ADT 875-660 occupies a particularly versatile position, combining a wide temperature range with high stability and extensive expansion options.

Additional solutions for professional temperature calibration are available from europascal in the Dry Well Calibrators category.

Discover more Additel products here.

Manufacturer information about the Additel ADT 875-660 is available from the official Additel website.

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