The Additel ADT 850 Thermocouple Calibration Furnace is a high performance calibration furnace designed for precise temperature calibration from 100 °C to 1,200 °C. Its innovative 3-in-1 concept combines different calibration applications in a single system and provides a total of nine operating modes. This makes the Additel ADT 850 particularly suitable for primary and secondary calibration laboratories as well as demanding applications in industry, research, energy, aerospace and metallurgy.

High temperature stability, multi-zone temperature control and flexible configurations for different thermocouples make the calibration furnace a powerful solution for professional temperature calibration. Short and long thermocouples as well as noble metal and base metal thermocouples can be precisely calibrated using appropriate configurations. A dedicated operating mode for thermocouple annealing is also available.

At europascal, you can obtain the Additel ADT 850 together with expert advice on selecting the appropriate configuration for your calibration application. After purchase, europascal also supports you with professional calibration and metrology services.

Your Benefits at a Glance

• Temperature range from 100 °C to 1,200 °C
• Innovative 3-in-1 concept
• Nine different operating modes and configurations
• Temperature stability down to ±0.1 °C
• Multi-zone temperature control
• Suitable for short and long thermocouples
• Suitable for noble metal and base metal thermocouples
• Dedicated operating mode for thermocouple annealing
• Fast cooling with Quick Cool technology
• Adjustable probe holder for reproducible immersion depth
• Swiveling 7 inch color touchscreen
• Display resolution of 0.01 °C
• Alumina and metal inserts available
• Advanced EMF shielding
• WiFi, Bluetooth, USB and LAN
• Extensive safety functions

Ideal for Demanding Thermocouple Calibration Applications

The Additel ADT 850 was specifically developed for professional thermocouple calibration. Conventional calibration furnaces are often optimized for particular probe lengths or applications. In contrast, the flexible concept of the ADT 850 enables different calibration tasks to be performed with a single instrument.

Typical applications include:

• Primary calibration laboratories
• Secondary calibration laboratories
• DAkkS accredited calibration laboratories
• In house calibration laboratories
• Energy supply
• Aerospace
• Metallurgy
• Research and development
• Quality assurance
• Industrial temperature metrology

The temperature range up to 1,200 °C enables calibration of numerous thermocouple types. Different operating modes allow the furnace to be adapted to different probe lengths and applications.

For regular verification and calibration 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 850 Thermocouple Calibration Furnace is its high degree of flexibility. Depending on the application, different inserts and configurations can be used. Additel offers alumina tubes for noble metal thermocouples as well as various metal inserts for base metal thermocouples.

As a result, a single calibration furnace can perform different tasks that would otherwise require several specialized systems. The ADT 850 supports both short and long immersion depths and also provides a dedicated mode for annealing noble metal thermocouples.

An adjustable probe holder provides stable mechanical positioning and reproducible immersion depth. This is particularly important for high accuracy comparison calibrations because differences in the positioning of devices under test can influence the measurement result.

3-in-1 Concept for Greater Calibration Flexibility

One of the key features of the Additel ADT 850 is its innovative 3-in-1 concept. Instead of limiting the furnace to a single thermocouple configuration, Additel has designed the system to support a variety of calibration requirements using one common platform.

Together with the nine available operating modes, this enables the furnace to be configured for different thermocouple lengths, materials and calibration procedures.

For laboratories working with a wide variety of thermocouples, this flexibility can reduce the number of separate furnace systems required and simplify calibration workflows.

The ability to combine thermocouple calibration and annealing within one system also makes the ADT 850 particularly attractive for laboratories that regularly work with high quality noble metal thermocouples.

Multi-Zone Temperature Control

Precise thermocouple calibration requires a stable and sufficiently uniform temperature zone. The Additel ADT 850 uses multi-zone temperature control to create controlled thermal conditions within the furnace.

This is particularly important when thermocouples with different lengths are calibrated. The appropriate operating mode and insert configuration can be selected according to the calibration application.

Combined with controlled probe positioning, multi-zone regulation supports reproducible comparison measurements and helps reduce temperature gradients within the relevant calibration zone.

Thermocouple Annealing

In addition to conventional comparison calibration, the Additel ADT 850 provides a dedicated operating mode for thermocouple annealing.

Annealing can be particularly relevant for suitable noble metal thermocouples because thermal and mechanical stresses may influence their thermoelectric properties.

The integrated annealing capability expands the application range of the ADT 850 beyond conventional calibration and provides laboratories with an additional tool for working with high quality thermocouples.

Technical Highlights

• Temperature range: 100 °C to 1,200 °C
• Temperature stability: down to ±0.1 °C
• Multi-zone temperature control
• Nine operating modes
• 3-in-1 concept
• Heating power: 4,000 W
• Heating time from 23 °C to 1,200 °C: approx. 40 minutes with empty chamber
• Cooling time from 1,200 °C to 300 °C: approx. 90 minutes with empty chamber
• Display: 7 inch color touchscreen
• Display resolution: 0.01 °C
• Communication via WiFi, Bluetooth, USB and LAN
• Dimensions: approx. 342 × 424 × 680 mm
• Weight: approx. 45 kg without insert
• Alumina and metal inserts available
• Quick Cool technology
• EMF shielding technology

Technical Specifications

Why Choose the Additel ADT 850?

The Additel ADT 850 Thermocouple Calibration Furnace combines a wide temperature range, high stability and exceptional flexibility. A major advantage is its 3-in-1 concept. Different calibration tasks can be performed using one common furnace system, potentially reducing the need for several separate calibration furnaces.

A stable and uniform temperature zone is particularly important for precise thermocouple calibration. The ADT 850 uses multi-zone temperature control for this purpose. Depending on the operating mode and configuration, short or long thermocouples can be calibrated under controlled conditions.

The user interface has also been designed for daily laboratory operation. The swiveling 7 inch color touchscreen provides convenient operation and a clear display of relevant parameters. A display resolution of 0.01 °C supports precise adjustment and monitoring of the calibration process.

Integrated Quick Cool technology also reduces the time required when moving from high to lower temperatures. This can increase laboratory productivity, particularly during calibrations involving multiple temperature points.

Modern communication via WiFi, Bluetooth, USB and LAN simplifies integration of the Additel ADT 850 into existing laboratory environments and automated calibration workflows.

Short and Long Thermocouple Calibration

Thermocouple design varies considerably depending on the application. Probe length, diameter, thermocouple material and required immersion depth can all influence the calibration setup.

The Additel ADT 850 addresses these requirements through different operating modes, inserts and configurations. This enables the furnace to accommodate both short and long thermocouples.

The adjustable probe holder helps maintain a reproducible immersion depth during calibration. Consistent positioning is particularly important when comparing a device under test with a reference thermocouple because changes in immersion depth can expose the sensors to different temperature gradients.

This flexible mechanical and thermal configuration makes the ADT 850 suitable for laboratories calibrating a wide variety of thermocouple designs.

Noble Metal and Base Metal Thermocouples

The Additel ADT 850 can be configured for both noble metal and base metal thermocouples.

Additel provides alumina tubes for applications involving noble metal thermocouples and various metal inserts for base metal thermocouple applications.

This flexibility allows laboratories to adapt the furnace to the sensor type and calibration procedure rather than relying on a single fixed configuration.

For users who regularly calibrate different thermocouple types, this approach provides a versatile platform for high temperature temperature metrology.

Typical Calibration Applications with the Additel ADT 850

The Additel ADT 850 is particularly suitable for comparison calibration of thermocouples at high temperatures. This includes both noble metal and base metal thermocouples of different designs and lengths.

Different inserts and operating modes allow the system to be adapted to the specific calibration task. Controlled immersion depth and multi-zone temperature control support reproducible measurement conditions. The furnace can also be used for annealing suitable thermocouples.

The Additel ADT 850 is therefore an attractive solution for calibration laboratories, industrial metrology departments and organizations requiring a flexible platform for demanding temperature calibrations up to 1,200 °C.

Additional professional temperature calibration solutions are available from europascal in the Temperature section.

Discover more Additel products here.

Manufacturer information about the Additel ADT 850 is available on the official Additel website.

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