Additel ADT 161 is a precise intelligent digital pressure module designed to extend the pressure measurement capabilities of compatible Additel calibrators and pressure controllers. With pressure ranges extending up to 60,000 psi / 4,200 bar, accuracy options down to 0.01% FS and selected precision sensors offering accuracy down to 0.01% of reading (RD), the ADT 161 provides a flexible solution for demanding pressure calibration and measurement applications.

Using advanced microprocessor technology and high-performance silicon pressure sensors, the Additel ADT 161 combines excellent accuracy, stability and flexibility in a compact stainless-steel module. Each pressure sensor is specially aged, tested and screened before assembly to achieve reliable long-term measurement performance.

The ADT 161 is available in numerous pressure ranges and accuracy classes. This allows users to select a pressure module specifically matched to the required calibration range and measurement uncertainty. Gauge, vacuum, differential and other pressure configurations are available depending on the selected module.

Additel also offers the ADT 161Ex series for intrinsically safe applications. These Ex versions are specifically designed for use with compatible intrinsically safe Additel instruments such as the ADT 226Ex and ADT 227Ex.

At europascal, the Additel ADT 161 complements a comprehensive portfolio of professional pressure measurement and calibration equipment. In addition to supplying Additel calibration technology, europascal provides accredited calibration services for pressure 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 161 combines a very wide selection of pressure ranges with high measurement accuracy and flexible integration into Additel calibration systems.

Key advantages include:

• Pressure ranges up to 60,000 psi / 4,200 bar
• Accuracy options down to 0.01% FS
• Selected precision sensors with accuracy down to 0.01% RD
• Advanced silicon pressure sensor technology
• Intelligent digital pressure measurement
• Fully temperature-compensated accuracy
• Advanced temperature compensation
• Gauge pressure ranges
• Vacuum pressure ranges
• Differential pressure ranges
• Numerous pressure range configurations
• Different accuracy classes available
• Multiple pressure connection options
• Stainless-steel enclosure
• Compact module design
• Compatible with several Additel calibrators and controllers
• Intrinsically safe ADT 161Ex versions available
• ISO 17025 accredited calibration certificate with data included
• Suitable for laboratory and field calibration
• Designed for professional pressure metrology

Pressure Ranges up to 4,200 bar

The Additel ADT 161 series covers an exceptionally broad range of pressure measurement applications.

Depending on the selected module, pressure ranges extend from low differential and vacuum pressure measurements to ultra-high pressure measurement up to:

60,000 psi / 4,200 bar.

This broad selection enables users to configure a pressure calibration system according to the actual measuring range required by the application.

Typical applications include:

• Low-pressure measurement
• Differential pressure measurement
• Vacuum measurement
• Gauge pressure measurement
• Hydraulic pressure measurement
• Pneumatic pressure measurement
• High-pressure calibration
• Ultra-high pressure measurement
• Pressure comparison calibration
• Reference pressure measurement

Instead of requiring a separate complete pressure calibrator for every range, compatible Additel instruments can be expanded using the appropriate ADT 161 module.

Accuracy Down to 0.01% FS

The Additel ADT 161 is available in different accuracy classes.

Depending on pressure range and configuration, available accuracy options include:

0.01% FS

0.02% FS

0.05% FS

0.1% FS

This allows the pressure module to be selected according to the accuracy requirements of the application.

The 0.01% FS accuracy option is available for selected non-Ex modules.

For applications requiring particularly high measurement performance, Additel also offers selected precision sensors with specifications down to:

0.01% RD

depending on the selected pressure range.

This provides significantly greater flexibility when configuring a pressure calibration system for demanding metrological applications.

Advanced Silicon Pressure Sensor Technology

At the heart of every Additel ADT 161 is a high-performance silicon pressure sensor.

According to Additel, every sensor is specially:

• Aged
• Tested
• Screened

before assembly.

These processes are designed to improve measurement performance, stability and reliability.

Additel has also transitioned to in-house manufacturing of its pressure sensors. This gives the manufacturer greater control over sensor production, quality, stability and consistency.

Combined with advanced microprocessor technology, the sensor provides the basis for accurate digital pressure measurement across the available ADT 161 ranges.

Fully Temperature-Compensated Accuracy

Pressure sensor characteristics are affected by temperature.

For precision calibration, it is therefore important that temperature effects are appropriately compensated.

The Additel ADT 161 uses advanced temperature compensation to maintain its specified measurement performance across the defined operating temperature range.

For standard ADT 161 modules, the operating temperature range is:

-10 °C to +50 °C.

The storage temperature range is:

-30 °C to +70 °C.

This broad temperature compensation range makes the ADT 161 suitable not only for controlled calibration laboratories but also for demanding field applications.

Flexible Pressure Range Selection

One of the major advantages of the Additel ADT 161 is the extensive selection of available pressure ranges.

Rather than designing the system around one fixed sensor, the user can select the pressure module according to the application.

This provides important advantages for calibration work.

For example, a lower-range module can be used when high resolution and measurement performance are required at relatively low pressures.

For higher pressure applications, another ADT 161 module can be connected to the same compatible Additel instrument.

This modular concept allows a calibration system to cover multiple pressure ranges without requiring a complete additional calibrator for every range.

Gauge Pressure Measurement

The Additel ADT 161 series includes a wide selection of gauge pressure modules.

Available ranges extend from very low pressures to ultra-high pressure.

Depending on the selected pressure range, modules can be suitable for gas, liquid or both pressure media.

For pressures above 1,000 psi, Additel specifies sealed gauge pressure for the corresponding ranges.

This wide selection enables the ADT 161 to support applications ranging from pneumatic process calibration to demanding hydraulic high-pressure calibration.

Differential Pressure Measurement

The Additel ADT 161 series also includes differential pressure modules.

Differential pressure measurement is particularly important in applications such as:

• Filter monitoring
• Flow measurement
• HVAC measurement
• Cleanroom applications
• Process instrumentation
• Low-pressure calibration

The availability of dedicated differential pressure ranges enables compatible Additel instruments to be expanded for these specialized applications.

Modular Pressure Calibration

The Additel ADT 161 is not a standalone display instrument. It is designed as an external digital pressure module for compatible Additel equipment.

This modular approach provides significant advantages.

A compatible calibrator or controller provides the user interface, processing and additional calibration functions, while the ADT 161 provides the pressure measurement range required for the specific application.

The pressure module can therefore extend the measuring range of the host instrument without requiring the purchase of another complete calibration system.

Compatible Additel Instruments

The Additel ADT 161 is designed for integration with several professional Additel calibration instruments.

Depending on the application and current instrument configuration, ADT 161 modules can be used with Additel equipment including:

• Additel ADT 760 automatic handheld pressure calibrator
• Additel ADT 761A automated pressure calibrator
• Additel ADT 226 multifunction process calibrator
• Additel ADT 227 documenting process calibrator
• Compatible Additel pressure controllers

A suitable pressure module connection cable is required for the corresponding application.

This modular compatibility enables users to build a flexible pressure calibration system around a common family of instruments.

Integration with the Additel ADT 761A

The Additel ADT 161 can be used as an external pressure module with the Additel ADT 761A automated pressure calibrator.

This combination expands the pressure measurement capabilities of the ADT 761A and allows the user to select an external module suited to the required pressure range.

The modular concept is particularly useful when one calibrator must cover several different pressure ranges.

Instead of relying exclusively on the internal pressure sensor, the user can connect an appropriate ADT 161 module for the measurement task.

Integration with Additel ADT 226 and ADT 227

The ADT 161 can also be used with the Additel ADT 226 and ADT 227 series process calibrators.

This enables these multifunction process calibrators to perform external pressure measurements using the selected ADT 161 module.

The combination is particularly useful when pressure measurement must be combined with electrical calibration functions.

Typical applications include:

• Pressure transmitter calibration
• Pressure switch testing
• Process instrument calibration
• Pressure sensor verification
• Field calibration

The appropriate ADT 161 module provides the pressure measurement while the process calibrator provides the required display and additional calibration functions.

Intrinsically Safe ADT 161Ex

For applications in hazardous areas, Additel offers the separate:

Additel ADT 161Ex

series.

The intrinsically safe versions are ATEX certified:

II 1G Ex ia IIC T4 Ga.

According to Additel, the ADT 161Ex modules must be used together with the ADT 226Ex or ADT 227Ex to conform to the ATEX certificate.

This provides a modular pressure measurement solution for applications where intrinsic safety is required.

It is important to distinguish the standard Additel ADT 161 from the intrinsically safe ADT 161Ex when selecting a module.

Multiple Pressure Connections

The Additel ADT 161 is available with several pressure connection options.

Depending on the selected module and pressure range, available connections include:

• 1/4 NPT male
• 1/2 NPT male
• 1/4 BSP male
• 1/2 BSP male
• M20 × 1.5 male
• Autoclave F-250-C female
• Autoclave M-250-C male

This broad selection simplifies integration into different pneumatic and hydraulic calibration systems.

The appropriate connection should always be selected according to the pressure range, device under test and existing calibration setup.

Compact Stainless-Steel Design

Despite its broad measurement capability, the Additel ADT 161 is extremely compact.

The standard module dimensions are approximately:

33 mm diameter × 123 mm height.

The weight is approximately:

0.4 kg.

The external enclosure is manufactured from stainless steel.

This compact and robust construction makes the ADT 161 suitable for both laboratory and mobile calibration applications.

Several modules covering different pressure ranges can therefore be transported without requiring the space associated with multiple complete pressure calibrators.

ISO 17025 Accredited Calibration Included

Every Additel ADT 161 is supplied with an:

ISO 17025 accredited calibration certificate with data.

This is particularly valuable for professional calibration laboratories and industrial quality assurance systems where documented metrological traceability is required.

The included calibration data provides information about the measurement performance of the individual pressure module.

For ongoing use, the appropriate recalibration interval should be determined according to the application, usage, stability history and applicable quality management requirements.

Technical Highlights

Additel ADT 161 vs. Additel ADT 161Ex

The Additel ADT 161 and Additel ADT 161Ex use the same modular pressure measurement concept but are intended for different operating environments.

The standard ADT 161 provides the broadest selection of accuracy options, including selected:

0.01% FS

and precision:

0.01% RD

configurations.

The ADT 161Ex is designed for applications requiring intrinsic safety.

The Ex version is particularly relevant for pressure calibration in hazardous environments when combined with compatible intrinsically safe Additel equipment.

For conventional laboratory and industrial calibration environments where intrinsic safety is not required, the standard ADT 161 provides the widest selection of performance options.

Typical Applications

The Additel ADT 161 is suitable for:

• Pressure calibration
• Precision pressure measurement
• Reference pressure measurement
• Gauge pressure measurement
• Vacuum measurement
• Differential pressure measurement
• Pneumatic pressure calibration
• Hydraulic pressure calibration
• Ultra-high pressure measurement
• Pressure gauge calibration
• Pressure transmitter calibration
• Pressure transducer calibration
• Pressure sensor testing
• Pressure switch testing
• Process calibration
• Laboratory calibration
• Field calibration
• Industrial maintenance
• Research and development
• Pressure metrology

Why Choose the Additel ADT 161?

The Additel ADT 161 provides a flexible way to expand compatible Additel calibration equipment with additional pressure measurement ranges.

Its modular design means that users can select the pressure range and accuracy class required for each application instead of purchasing a separate complete pressure calibrator.

With ranges extending up to 60,000 psi / 4,200 bar, the ADT 161 covers applications from low-pressure and differential pressure measurement to demanding hydraulic ultra-high pressure measurement.

Accuracy options down to 0.01% FS, together with selected precision sensors offering performance down to 0.01% RD, make the series suitable for demanding professional calibration applications.

Advanced silicon pressure sensors, extensive sensor screening and temperature compensation contribute to stable and reliable pressure measurements.

The compact stainless-steel enclosure measures only approximately 33 × 123 mm and weighs approximately 0.4 kg, making it easy to integrate into both laboratory and mobile calibration systems.

An ISO 17025 accredited calibration certificate with data is included, supporting professional quality assurance and metrological traceability requirements.

At europascal, we provide Additel pressure measurement and calibration technology for professional laboratory, industrial and field applications. Our portfolio includes digital pressure modules, pressure calibrators, pressure gauges, pressure pumps and automated pressure calibration solutions.

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

Further Additel products are available from europascal.

Manufacturer information about the Additel ADT 161 is available on the official Additel website.