Additel ADT 878-1210 is a precise reference thermocouple calibration furnace designed for professional temperature calibration from 100 °C to 1210 °C. Combining reference-level temperature performance, patented multi-zone temperature control, interchangeable metallic inserts and a modern color touchscreen interface, the ADT 878-1210 provides a powerful solution for calibrating thermocouples at temperatures extending beyond the capabilities of conventional dry block calibrators.

The Additel ADT 878-1210 is specifically designed for demanding thermocouple calibration and verification work. Its multi-zone temperature control technology is engineered to provide a highly stable and uniform heat source while minimizing temperature gradients and loading effects. This is particularly important when several thermocouples are calibrated simultaneously or when reference thermocouples and devices under test are inserted into the same calibration zone.

With a temperature range from 100 °C to 1210 °C, the ADT 878-1210 covers a wide range of industrial and laboratory high-temperature applications. The reference model provides a display accuracy of ±1.0 °C at 100 °C, 300 °C and 600 °C, ±1.2 °C at 900 °C and ±1.5 °C at 1210 °C.

The furnace is also available as the ADT 878PC-1210 with integrated process calibration electronics. This option adds four device-under-test measurement channels, a dedicated reference thermocouple channel, current and voltage measurement, 24 V loop power, switch testing, task documentation and optional HART communication.

At europascal, the Additel ADT 878-1210 complements a comprehensive portfolio of professional temperature calibration equipment. In addition to supplying Additel temperature calibration technology, europascal provides accredited calibration services for temperature and other measurement quantities. Find more information about professional calibration and metrological traceability at the europascal Calibration Service.

Your Benefits at a Glance

The Additel ADT 878-1210 combines a high maximum temperature with reference-level performance and advanced temperature control.

Key advantages include:

• Temperature range from 100 °C to 1210 °C
• Reference thermocouple calibration furnace
• Display accuracy up to ±1.5 °C at 1210 °C
• Temperature stability of ±0.1 °C
• Patented multi-zone temperature control
• Excellent axial and radial temperature uniformity
• Designed to minimize loading effects
• Interchangeable metallic inserts
• Reference-style inserts with 138 mm hole depth
• Color touchscreen display
• Wi-Fi capability
• Bluetooth capability
• USB communication
• Internal and external sensor control with PC option
• Four device-under-test measurement channels with PC option
• Dedicated reference thermocouple channel with PC option
• Thermocouple measurement
• Current and voltage measurement with PC option
• 24 V loop power with PC option
• Switch testing with PC option
• Task documentation
• Optional HART communication
• Self-calibration functionality with PC option
• Portable high-temperature design
• ISO 17025-accredited calibration with data included

Temperature Calibration from 100 °C to 1210 °C

The Additel ADT 878-1210 provides temperature control from:

100 °C

to:

1210 °C.

This broad range makes the furnace suitable for calibrating thermocouples used in demanding industrial and laboratory high-temperature applications.

Typical applications include:

• Type S thermocouple calibration
• Type R thermocouple calibration
• Type K thermocouple calibration
• Type B thermocouple calibration
• Type N thermocouple calibration
• Industrial thermocouple verification
• High-temperature sensor calibration
• Furnace temperature sensor calibration
• Heat-treatment applications
• Laboratory temperature calibration
• Industrial temperature metrology

The 1210 °C maximum temperature provides substantial overlap with applications traditionally requiring larger laboratory furnaces.

Reference-Level Temperature Performance

The Additel ADT 878-1210 is the reference version of Additel’s 1210 °C thermocouple calibration furnace.

The specified display accuracy is:

±1.0 °C at 100 °C

±1.0 °C at 300 °C

±1.0 °C at 600 °C

±1.2 °C at 900 °C

±1.5 °C at 1210 °C.

This performance distinguishes the ADT 878-1210 from the standard ADT 875-1210 version.

The display specification describes the performance of the furnace’s internal temperature indication. For high-level calibration work, the furnace can additionally be used with an external reference thermocouple.

Temperature Stability of ±0.1 °C

Stable temperature conditions are essential for reliable thermocouple calibration.

The Additel ADT 878-1210 provides specified temperature stability of:

±0.1 °C.

A stable heat source reduces fluctuations during the measurement period and supports reliable comparison between a reference thermocouple and the thermocouples under test.

This is especially important at high temperatures where thermal gradients, sensor loading and furnace regulation can have a significant influence on calibration results.

Patented Multi-Zone Temperature Control

A key feature of the Additel ADT 878-1210 is its patented multi-zone temperature control.

Conventional high-temperature furnaces can develop significant axial temperature gradients along the insertion depth of the sensor.

Additel’s multi-zone concept controls different thermal zones to improve the usable calibration region.

The objective is to provide:

• High temperature stability
• Improved axial uniformity
• Improved radial uniformity
• Reduced temperature gradients
• Reduced influence of sensor loading

This is particularly valuable when several thermocouples are inserted into the furnace simultaneously.

Designed for Thermocouple Calibration

The Additel ADT 878-1210 is specifically optimized for thermocouple calibration.

Thermocouples are widely used at temperatures where resistance thermometers are no longer suitable or practical.

Typical high-temperature thermocouple applications include:

• Industrial furnaces
• Heat treatment
• Metal processing
• Glass manufacturing
• Ceramics
• Research laboratories
• Production processes
• High-temperature test equipment

The ADT 878-1210 provides a compact calibration furnace that can be used for comparison calibration of these sensors.

Interchangeable Metallic Inserts

The Additel ADT 878-1210 uses interchangeable metallic inserts.

Different insert configurations allow the furnace to accommodate thermocouples with different diameters.

This provides greater flexibility than a fixed-bore calibration furnace.

The ADT 878-1210 requires the appropriate reference-style insert for its specified performance.

Reference-style inserts provide a hole depth of approximately:

138 mm / 5.43 inches.

Several insert configurations are available, allowing the calibration setup to be adapted to the thermocouples being tested.

Reference Thermocouple Operation

For demanding comparison calibration, the ADT 878-1210 can be used with an external reference thermocouple.

A typical configuration consists of:

Additel ADT 878-1210 + Reference Thermocouple + Thermocouples Under Test

The reference thermocouple and devices under test are inserted into the calibration block.

After the furnace has reached the required setpoint and sufficient thermal stabilization has occurred, the temperature measured by the reference thermocouple is compared with the indications or thermoelectric voltages of the thermocouples under test.

This approach reduces reliance on the furnace’s internal display as the sole temperature reference.

Optional AM1210-12 Reference Thermocouple

Additel offers the AM1210-12 as an optional reference standard thermocouple for high-temperature applications.

It is a:

Type S thermocouple

using:

Platinum/10% Rhodium versus Platinum.

Its specified temperature range extends from:

0 °C to 1300 °C.

The thermocouple uses a 6 mm diameter alumina sheath with a length of approximately 305 mm.

This makes the AM1210-12 particularly suitable as a reference thermocouple for use with the ADT 878-1210.

ADT 878PC-1210 Process Calibrator Option

The Additel ADT 878-1210 can also be configured with integrated process calibration electronics as the ADT 878PC-1210.

This transforms the calibration furnace into a more comprehensive temperature calibration workstation.

The PC option provides four measurement channels for devices under test.

Supported thermocouple types include:

• Type S
• Type R
• Type K
• Type B
• Type N
• Type E
• Type J
• Type T
• Type L
• Type U

This enables several thermocouples to be measured directly by the calibration furnace.

Dedicated Reference Channel

The process calibrator option includes a dedicated reference thermocouple measurement channel.

This allows an external reference thermocouple to be connected directly to the ADT 878PC-1210.

The reference channel provides higher electrical measurement performance than the standard device-under-test channels.

This configuration allows the furnace to control the thermal environment while simultaneously measuring the reference thermocouple and multiple devices under test.

The result is a highly integrated thermocouple calibration system.

Four Device-Under-Test Channels

The ADT 878PC-1210 provides four device-under-test measurement channels.

This allows multiple thermocouples to be calibrated during the same temperature cycle.

Calibrating several sensors simultaneously can significantly improve laboratory productivity, particularly when a calibration procedure includes several temperature points.

Instead of repeating the complete heating and cooling cycle for every thermocouple, several sensors can be compared with the reference during the same calibration run.

Electrical Measurement Functions

The PC option extends the ADT 878-1210 beyond direct thermocouple measurement.

It provides:

Current measurement from -30 mA to +30 mA

and voltage measurement ranges of:

-12 V to +12 V

and:

-30 V to +30 V.

A:

24 V DC loop supply

is also available with a maximum current of 60 mA.

These functions support the calibration and verification of temperature transmitters and other process instruments.

HART Communication

Optional HART communication is available with the ADT 878PC-1210.

This enables compatible HART temperature transmitters to be configured and evaluated directly from the calibration system.

For process calibration applications, this can simplify workflows involving smart temperature transmitters.

Instead of using several separate instruments, the calibration furnace can combine temperature generation, electrical measurement, documentation and HART communication in a single system.

Task Documentation

The process calibrator version supports comprehensive task documentation.

Up to:

1,000 tasks

can be stored.

Each task can contain up to:

10 results

including as-found and as-left data.

Additional functionality includes:

• Screen capture
• Auto-step recording
• Ramp function recording
• Calibration task documentation

These capabilities make the ADT 878PC-1210 particularly suitable for structured calibration workflows.

Color Touchscreen and Modern Communication

The Additel ADT 878-1210 features a modern color touchscreen display.

The interface provides direct access to temperature settings and system functions.

Communication capabilities include:

• USB
• Wi-Fi
• Bluetooth

These interfaces simplify integration into modern calibration environments and support remote operation and data handling.

Self-Calibration Function

The PC version provides a self-calibration feature.

When used with an appropriate external reference sensor, this function can help adjust the furnace’s internal temperature measurement and improve the relationship between the displayed temperature and reference temperature.

This functionality can be useful for maintaining performance between external calibration intervals.

It does not replace appropriate metrological calibration and traceability procedures.

ISO 17025 Accredited Calibration Included

The Additel ADT 878-1210 is supplied with an:

ISO 17025-accredited calibration certificate with data.

This is particularly important for professional calibration laboratories, industrial quality assurance and organizations operating accredited or traceable measurement systems.

The calibration documentation provides information about the performance of the individual unit and supports metrological traceability.

Technical Highlights

Additel ADT 878-1210 vs. Additel ADT 875-1210

The Additel ADT 878-1210 and Additel ADT 875-1210 cover the same basic temperature range:

100 °C to 1210 °C.

Both models use Additel’s multi-zone temperature control technology and interchangeable metallic inserts.

The primary difference is their performance level.

The ADT 875-1210 is positioned as the standard thermocouple calibration furnace.

The Additel ADT 878-1210 is the reference model and provides improved display accuracy.

At 1210 °C, for example, the specified display accuracy is:

ADT 875-1210: ±2.0 °C

ADT 878-1210: ±1.5 °C.

At 600 °C, the corresponding specifications are:

ADT 875-1210: ±1.2 °C

ADT 878-1210: ±1.0 °C.

The ADT 878-1210 is therefore particularly suitable when improved reference-level temperature performance is required.

ADT 878-1210 for Professional Calibration Laboratories

The Additel ADT 878-1210 is particularly attractive for calibration laboratories that need to extend their temperature calibration capability beyond the range of conventional dry block calibrators.

Its maximum temperature of 1210 °C supports calibration of thermocouples used in high-temperature industrial processes.

The combination of multi-zone temperature control, reference thermocouple capability, interchangeable inserts and optional integrated measurement electronics allows a complete high-temperature comparison calibration system to be created around one furnace.

For professional calibration work, all relevant contributions to measurement uncertainty should be evaluated.

These can include:

• Reference thermocouple calibration uncertainty
• Reference thermocouple drift
• Furnace stability
• Axial temperature uniformity
• Radial temperature uniformity
• Loading effects
• Thermocouple inhomogeneity
• Cold-junction compensation
• Electrical measurement uncertainty
• Repeatability
• Environmental influences

This allows the ADT 878-1210 to be integrated into a documented calibration procedure and measurement uncertainty budget.

Typical Applications

The Additel ADT 878-1210 is suitable for:

• Thermocouple calibration
• High-temperature calibration
• Type S thermocouple calibration
• Type R thermocouple calibration
• Type K thermocouple calibration
• Type B thermocouple calibration
• Type N thermocouple calibration
• Temperature transmitter calibration
• High-temperature sensor verification
• Comparison temperature calibration
• Industrial furnace sensor calibration
• Heat-treatment sensor calibration
• Calibration laboratory applications
• Quality assurance
• Research and development
• Temperature metrology

Why Choose the Additel ADT 878-1210?

The Additel ADT 878-1210 combines a wide 100 °C to 1210 °C temperature range with reference-level performance in a modern thermocouple calibration furnace.

Its patented multi-zone temperature control is designed to provide excellent temperature stability and uniformity while minimizing gradients and loading effects.

The reference model achieves a display accuracy of ±1.5 °C at 1210 °C and temperature stability of ±0.1 °C.

Interchangeable metallic inserts provide flexibility for thermocouples with different diameters, while the reference-style inserts provide a hole depth of approximately 138 mm.

For more demanding applications, the ADT 878PC-1210 adds four device-under-test channels, a dedicated reference thermocouple channel, current and voltage measurement, 24 V loop power, documentation and optional HART communication.

The result is a highly integrated calibration system capable of generating high temperatures, measuring reference and test thermocouples and documenting calibration results.

At europascal, we provide Additel temperature calibration technology for professional laboratory, industrial and field applications. Our portfolio includes dry block calibrators, thermocouple calibration furnaces, calibration baths, reference thermometers and temperature measurement equipment.

For professional calibration and metrological traceability of temperature measuring instruments, visit the europascal Calibration Service.

Further Additel products are available from europascal.

Manufacturer information about the Additel ADT 878-1210 is available on the official Additel website.

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