Additel ADT 260Ex is a versatile intrinsically safe handheld multichannel reference recorder designed for pressure, temperature and electrical measurement in hazardous environments. With up to eight measurement channels, interchangeable pressure modules, RTD measurement, a built-in barometer and comprehensive data logging capabilities, the ADT 260Ex combines multiple reference measurement functions in one portable instrument.

Designed especially for demanding field applications, the Additel ADT 260Ex is an excellent solution for technicians working in the oil and gas industry, pipeline systems, petrochemical plants and other industrial environments where intrinsic safety is required. The instrument combines accurate measurement with extensive data recording and graphical analysis functions.

The modular architecture supports a field-switchable Additel ADT 158Ex pressure module as well as two external Additel ADT 161Ex pressure modules. This allows different pressure ranges to be combined with temperature and electrical measurements in one handheld reference system.

At europascal, the Additel ADT 260Ex complements a comprehensive range of professional pressure and process calibration equipment. europascal also offers accredited calibration services for pressure, temperature and electrical measuring equipment. Find more information about professional calibration and metrological traceability at the europascal Calibration Service.

Your Benefits at a Glance

The Additel ADT 260Ex combines multiple measurement functions, intrinsic safety and extensive data logging in one portable reference recorder.

Key benefits include:

• Intrinsically safe handheld multichannel reference recorder
• Up to eight measurement channel configurations
• Pressure, temperature and electrical measurement
• Field-switchable Additel ADT 158Ex pressure module
• Two connections for external Additel ADT 161Ex pressure modules
• Built-in barometric pressure sensor
• Two RTD temperature measurement channels
• Supports 2-wire, 3-wire and 4-wire resistance sensors
• Current measurement
• Voltage measurement
• Frequency measurement
• Pulse measurement
• Switch testing
• Built-in loop power
• Synthesized differential pressure measurement
• Extensive automatic data logging
• Up to 10 million stored readings in single-channel operation
• Real-time graphical trending
• Local statistical analysis
• Color touchscreen display
• Bluetooth communication
• USB communication
• Communication with the Additel Link mobile app
• Suitable for hydrostatic testing
• ISO/IEC 17025 accredited calibration certificate included

Up to Eight Measurement Channels

One of the most important advantages of the Additel ADT 260Ex is its multichannel architecture.

The system provides up to eight different channel configurations:

Channel 1: Field-switchable internal digital pressure module

Channel 2: Built-in barometer

Channels 3 and 4: External digital pressure module inputs

Channel 5: Synthesized differential pressure channel

Channels 6 and 7: Temperature measurement channels

Channel 8: Electrical measurement and switch testing

This architecture enables pressure, temperature, barometric pressure and electrical signals to be measured and recorded with one portable instrument.

For technicians performing complex field tests, this can significantly reduce the amount of separate measurement equipment required.

Intrinsically Safe for Hazardous Areas

The Additel ADT 260Ex has been designed specifically for use in potentially explosive environments.

The instrument complies with stringent ATEX and IECEx intrinsic safety requirements and is certified to:

Ex ia IIC T4 Ga

This makes the ADT 260Ex suitable for professional measurement and calibration tasks in hazardous industrial areas when used according to its certification requirements.

Typical industries include:

• Oil and gas
• Pipeline operation
• Petrochemical industry
• Refineries
• Chemical processing
• Natural gas installations
• Process plants
• Energy production
• Industrial maintenance

The combination of intrinsic safety and multichannel measurement makes the ADT 260Ex particularly attractive for technicians who need to collect several measurement quantities directly in the field.

Modular Pressure Measurement

The Additel ADT 260Ex provides a highly flexible pressure measurement architecture.

Channel 1 supports a field-switchable Additel ADT 158Ex digital pressure module.

This module is mounted directly to the instrument and can be exchanged according to the required pressure range.

The ADT 260Ex can also be ordered without the internal ADT 158Ex pressure module if the application does not require one.

For additional pressure ranges, Channels 3 and 4 support external Additel ADT 161Ex pressure modules.

This means one ADT 260Ex can simultaneously incorporate several pressure references.

The modular concept allows the pressure measurement configuration to be adapted to different applications without replacing the complete recorder.

Additel ADT 158Ex Pressure Module

The field-switchable Additel ADT 158Ex provides the primary internal pressure measurement channel.

Different pressure ranges can be selected according to the application.

This makes it possible to configure the ADT 260Ex for applications ranging from lower industrial pressures to demanding high-pressure measurements, depending on the selected pressure module.

The field-switchable design is particularly useful for calibration departments with changing workloads.

Instead of purchasing several complete handheld instruments, different pressure modules can be used with the same ADT 260Ex platform.

Additel ADT 161Ex External Pressure Modules

The Additel ADT 260Ex also provides two external pressure module inputs.

These can be used with Additel ADT 161Ex intrinsically safe digital pressure modules.

External pressure modules provide additional flexibility because different pressure ranges can be connected simultaneously.

A technician can therefore monitor several pressure points or combine two pressure measurements for differential pressure applications.

This is especially valuable in pipeline, flow and process applications.

Synthesized Differential Pressure

Channel 5 of the Additel ADT 260Ex provides a synthesized differential pressure measurement.

The instrument uses the pressure measurements from Channels 3 and 4 to calculate the difference between the two pressure values.

This enables two external pressure modules to be used for differential pressure measurements.

Such a configuration can be particularly useful for:

• Differential pressure transmitters
• Flow measurement
• Pipeline filters
• Pump stations
• Process monitoring
• High static pressure applications

The modular approach provides considerably greater flexibility than a permanently installed differential pressure sensor.

Built-in Barometer

The Additel ADT 260Ex includes an integrated barometric pressure sensor.

The barometer is assigned to Channel 2 and can be calibrated by the user.

Barometric pressure information can be useful for several pressure measurement applications and provides an additional measurement quantity without requiring a separate external instrument.

Together with the interchangeable pressure modules, the built-in barometer contributes to the ADT 260Ex’s versatility as a portable pressure reference system.

Two RTD Temperature Channels

Pressure is not the only measurement quantity supported by the Additel ADT 260Ex.

Channels 6 and 7 are dedicated to temperature measurement using resistance temperature sensors.

The instrument supports:

• 2-wire RTDs
• 3-wire RTDs
• 4-wire RTDs

For the best measurement performance, a 4-wire configuration can be used to minimize the influence of lead resistance.

Additel also offers compatible industrial Pt100 probes for use with the ADT 260Ex.

This enables pressure and temperature to be measured and recorded simultaneously.

Electrical Measurement

Channel 8 provides electrical measurement functions.

The Additel ADT 260Ex can measure:

• Current
• Voltage
• Frequency
• Pulse

The same channel also supports switch testing.

In addition, the instrument provides built-in loop power.

These functions are particularly useful when working with industrial transmitters and other process instrumentation.

Pressure, temperature and electrical process signals can therefore be incorporated into the same measurement and recording platform.

Powerful Data Logging

A major strength of the Additel ADT 260Ex is its comprehensive data logging capability.

The instrument supports automatic multiparameter recording and can store up to:

10 million readings

when operating with a single measurement channel.

The logging interval can be configured from:

0.1 seconds to 9,999 seconds.

This wide adjustment range makes the recorder suitable for both rapidly changing processes and long-term monitoring applications.

Measurement results are stored directly in the instrument and can be reviewed locally.

Real-Time Graphical Trending

The ADT 260Ex does more than simply store numerical measurement values.

The instrument provides:

real-time graphical trending

allowing users to observe changes directly on the display.

Local curve viewing and statistical feedback provide additional tools for evaluating measurement data in the field.

This is especially valuable during pressure tests where the technician needs to identify:

• Pressure stability
• Pressure loss
• Temperature changes
• Leakage
• Long-term drift
• Process fluctuations

Graphical trending can therefore provide immediate information before the data is transferred for further analysis.

Ideal for Hydrostatic Testing

The Additel ADT 260Ex is particularly well suited to hydrostatic pressure testing.

Hydrostatic testing is widely used for verifying the integrity of pipelines, pressure vessels and other pressurized equipment.

The ability to measure and record pressure and temperature simultaneously provides important information during these tests.

Large onboard data storage also allows extended tests to be documented without requiring a permanently connected computer.

Typical applications include:

• Pipeline hydrostatic testing
• Pressure vessel testing
• Leak testing
• Pipeline commissioning
• Maintenance testing
• Long-term pressure monitoring

Pipeline Pressure Testing

Additel specifically designed the ADT 260Ex with pipeline applications in mind.

The instrument can support:

• Hydrostatic pressure testing
• Air leak testing
• Pump station inlet pressure testing
• Pump station outlet pressure testing
• Wellhead pressure testing
• Pipeline filter testing

The combination of multiple pressure channels, temperature measurement and data logging enables several important process variables to be captured simultaneously.

This can simplify field testing and reduce the need for several separate instruments.

Safety Valve Testing

The Additel ADT 260Ex can also be used for safety valve and pressure protection testing.

Pressure changes can be measured and logged while switch or electrical functions are monitored through the available measurement channels.

This makes the recorder suitable for applications where both pressure and electrical switching behavior need to be evaluated.

Recorded data provides valuable documentation for subsequent analysis.

Pressure Transmitter Testing

The ADT 260Ex provides an effective platform for testing pressure transmitters.

A typical setup combines:

• Reference pressure measurement
• Electrical current measurement
• Loop power
• Data logging

For a conventional 4 to 20 mA pressure transmitter, the pressure applied to the transmitter can be measured by an ADT 158Ex or ADT 161Ex pressure module while the electrical output is monitored simultaneously.

This enables pressure and transmitter output to be evaluated together.

Differential Pressure Transmitter Testing

Using two external Additel ADT 161Ex pressure modules, the Additel ADT 260Ex can synthesize a differential pressure channel.

This provides a flexible solution for differential pressure transmitter and flow measurement applications.

Both individual pressures remain available while the instrument calculates the pressure difference.

This is particularly useful when differential pressure measurement is required in systems operating under significant line pressure.

Color Touchscreen Display

The Additel ADT 260Ex features a color touchscreen display designed to provide clear access to measurement values, configuration settings, trend curves and recorded data.

Multiple measurement channels can be monitored from the portable instrument without requiring a separate computer.

This simplifies field operation, particularly when technicians need to change configurations or review recorded data directly at the measurement location.

Bluetooth and USB Communication

The ADT 260Ex supports modern data communication through:

Bluetooth

and:

USB.

Bluetooth connectivity enables communication with compatible mobile applications, while USB provides a direct interface for data transfer and instrument communication.

For Ex applications, Additel supplies the appropriate Ex USB cable with the instrument.

Additel Link Mobile App

The Additel ADT 260Ex can communicate with Additel’s Link mobile app.

This provides an additional option for interacting with measurement data using compatible mobile devices.

Together with the instrument’s onboard display and extensive local storage, this gives users several ways to access and manage measurement information.

Rechargeable Battery

The ADT 260Ex is supplied with a rechargeable lithium-ion battery.

This portable power concept is essential for field measurement and long-duration pressure testing applications where mains power may not always be available directly at the measurement point.

An external power adapter is also included.

The combination supports both portable field use and longer stationary measurement tasks.

ISO/IEC 17025 Accredited Calibration Certificate

The Additel ADT 260Ex is supplied with an:

ISO/IEC 17025 accredited calibration certificate.

This provides an important basis for professional metrological traceability.

For calibration laboratories, quality assurance departments and industrial measurement systems, documented calibration is essential for integrating the instrument into a controlled measurement equipment management system.

Typical Applications

The Additel ADT 260Ex is suitable for:

• Hazardous-area pressure measurement
• Hydrostatic pressure testing
• Pipeline pressure testing
• Air leak testing
• Wellhead pressure testing
• Pump station testing
• Pipeline filter testing
• Pressure transmitter calibration
• Differential pressure transmitter testing
• Flow measurement applications
• Safety valve testing
• Pressure device calibration
• RTD temperature measurement
• Electrical signal measurement
• Long-term data logging
• Process monitoring
• Oil and gas applications
• Petrochemical applications
• Industrial maintenance

Technical Highlights

Flexible Multichannel Measurement

The Additel ADT 260Ex is particularly useful when several physical quantities need to be measured at the same time.

A single measurement setup can combine:

Pressure + Pressure + Differential Pressure + Temperature + Temperature + Electrical Signal + Barometric Pressure

This provides a significant advantage for complex industrial tests.

Instead of synchronizing data from several independent measuring instruments, the ADT 260Ex provides a central portable recording platform.

Why Choose the Additel ADT 260Ex?

The Additel ADT 260Ex combines intrinsic safety, modular pressure measurement, temperature measurement, electrical measurement and extensive data logging in one portable instrument.

With up to eight measurement channel configurations, the recorder can be adapted to complex field measurement tasks that would otherwise require several separate instruments.

The field-switchable Additel ADT 158Ex pressure module and two external Additel ADT 161Ex inputs provide extensive flexibility for pressure measurement. Two RTD channels add temperature measurement, while the electrical channel supports current, voltage, frequency, pulse and switch testing.

Up to 10 million readings can be stored in single-channel operation, while adjustable logging intervals from 0.1 to 9,999 seconds support both short dynamic measurements and long-duration tests.

Real-time graphical trending and statistical functions help technicians evaluate measurement behavior directly in the field.

Its ATEX and IECEx intrinsic safety certification makes the ADT 260Ex particularly suitable for demanding applications in oil and gas, pipeline systems, petrochemical plants and other hazardous industrial environments.

At europascal, we provide Additel pressure and process calibration technology for laboratory and field applications. Our portfolio includes intrinsically safe pressure modules, pressure calibrators, reference instruments and complete calibration solutions.

For professional calibration and metrological traceability of the Additel ADT 260Ex and other pressure, temperature and electrical measuring instruments, visit the europascal Calibration Service.

Further Additel products are available from europascal.

Manufacturer information about the Additel ADT 260Ex is available on the official Additel website.

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