The Additel ADT 761A-1.5K Automatic Pressure Calibrator is a powerful portable pneumatic pressure calibrator designed for fully automated pressure generation, control, measurement and process calibration at pressures up to 1,500 psi / 100 bar.
With its integrated high-performance electric pump and precision pressure controller, the ADT 761A-1.5K automatically generates and controls pressures from vacuum up to:
1,500 psig
or:
100 bar(g)
The specified operating range extends from approximately:
-13.5 to 1,500 psig
or approximately:
-0.9 to 100 bar(g)
An integrated barometric reference enables both gauge and absolute pressure applications.
The high-pressure range is covered by the internal CP1.5K pressure module, while a second internal pressure module can be configured for lower pressure ranges. This dual-module concept improves flexibility when instruments with substantially different pressure ranges need to be calibrated with the same system.
Depending on the selected internal pressure module, pressure accuracy of:
0.01 % FS
or:
0.02 % FS
is available.
The Additel ADT 761A-1.5K combines automatic pneumatic pressure generation with electrical process calibration, HART communication, data logging and automated calibration tasks, making it an excellent solution for professional calibration laboratories and demanding field applications.
The europascal calibration service provides professional calibration solutions for automatic pressure calibrators, pressure controllers, pressure modules, digital pressure gauges, pressure transmitters and pressure sensors.
Your Benefits at a Glance
The Additel ADT 761A-1.5K Automatic Pressure Calibrator provides:
- Fully automatic pneumatic pressure generation
- Pressure generation up to 1,500 psi
- Pressure generation up to 100 bar
- Vacuum generation
- Gauge pressure measurement
- Absolute pressure measurement
- Integrated barometric reference
- Accuracy down to 0.01 % FS
- Automatic pressure control
- Two internal pressure module positions
- CP1.5K high-range module
- Configurable second internal low-range module
- External pressure module support
- Electrical process measurement
- 24 V loop power
- HART communication
- PROFIBUS PA communication
- Pressure switch testing
- Automated calibration tasks
- Data logging
- Storage of up to 1,000,000 readings
- Wi-Fi communication
- Bluetooth communication
- USB communication
- Ethernet communication
- Large color touchscreen
- Portable design
- Rechargeable battery
- Suitable for laboratory and field calibration
Automatic Pneumatic Pressure Generation up to 100 bar
The outstanding feature of the Additel ADT 761A-1.5K is its ability to automatically generate pneumatic pressure up to:
100 bar(g)
or:
1,500 psig
without requiring an external high-pressure gas cylinder for normal pressure generation.
The internal high-performance electric pump generates the required pneumatic pressure and the integrated controller automatically regulates the pressure to the selected setpoint.
This provides a major advantage over conventional calibration setups consisting of separate:
- Pressure pumps
- Pressure controllers
- Reference pressure gauges
- Fine adjustment valves
- Electrical process calibrators
- Communication devices
The ADT 761A-1.5K integrates these functions into a portable automated calibration platform.
Pressure Range from Vacuum to 1,500 psi
The ADT 761A-1.5K generates and controls pressure from vacuum conditions up to:
1,500 psig
or:
100 bar(g)
The high-range CP1.5K module covers approximately:
-13.5 to 1,500 psig
This corresponds approximately to:
-0.9 to 100 bar(g)
The combination of vacuum and positive pressure generation provides a wide operating span for calibrating many different pneumatic pressure instruments.
Gauge and Absolute Pressure
The Additel ADT 761A-1.5K supports both:
Gauge Pressure
and:
Absolute Pressure
Gauge pressure is referenced to atmospheric pressure:
p_gauge = p_absolute – p_atmosphere
Absolute pressure is referenced to an ideal vacuum:
p_absolute = p_gauge + p_atmosphere
The integrated barometric reference enables the ADT 761A-1.5K to use its gauge pressure modules for absolute pressure applications.
This significantly increases the versatility of the calibrator.
Integrated Barometric Reference
An integrated barometer measures the surrounding atmospheric pressure.
This allows the instrument to convert between gauge and absolute pressure values without requiring a separate external barometer.
The barometric reference is particularly useful when a calibration laboratory needs to handle both gauge and absolute pressure instruments using the same portable calibration platform.
Dual Internal Pressure Modules
One of the key features of the Additel ADT 761A-1.5K is its ability to accommodate:
two internal pressure modules
The high-pressure position is equipped with the:
CP1.5K
module.
This module covers the high-pressure range up to 1,500 psi / 100 bar.
A second internal pressure module can be configured for a lower pressure range.
For the ADT 761A-1.5K, lower-range configurations are available down to approximately:
35 psi / 2.5 bar(g)
This dual-module concept is particularly useful when the same calibrator must be used for instruments with widely differing measuring ranges.
Why Two Pressure Modules Are Useful
Pressure sensor accuracy is commonly specified relative to the sensor’s full span.
Using only a 100 bar sensor to calibrate a device at a few bar can therefore result in a relatively large absolute accuracy contribution.
The ADT 761A-1.5K solves this problem by allowing a second lower-range module to be installed.
For example, the high-range module can be used for high-pressure instruments while the lower-range module is selected automatically or manually for lower-pressure devices.
This extends the useful measurement capability of the system.
Accuracy Down to 0.01 % FS
Depending on the selected pressure module, the Additel ADT 761A-1.5K can provide pressure accuracy down to:
0.01 % FS
Other module configurations are available with:
0.02 % FS
accuracy.
FS refers to the full span of the respective pressure module.
For professional calibration applications, selecting an appropriate internal module range is therefore important for achieving the required measurement uncertainty.
Automatic Pressure Control
Generating pressure is only one part of a professional automatic calibration system.
The ADT 761A-1.5K also automatically controls the generated pressure.
The user enters the desired setpoint and the instrument:
- Generates the required pressure
- Approaches the selected setpoint
- Regulates the pressure
- Stabilizes the pressure
- Measures the reference pressure
This makes repetitive multipoint calibrations significantly more efficient than manual pressure generation.
Automated Calibration Tasks
The Additel ADT 761A-1.5K supports automated calibration procedures.
Calibration tasks can be configured for repetitive workflows involving several increasing and decreasing pressure points.
This is particularly useful when calibrating instruments such as:
- Digital pressure gauges
- Analog pressure gauges
- Pressure transmitters
- Pressure sensors
- Pressure transducers
- Pressure switches
Automated procedures improve consistency and reduce repetitive manual operation.
Electrical Process Calibration
In addition to pressure generation and measurement, the ADT 761A platform provides electrical process calibration functionality.
This allows the pressure input and electrical output of a transmitter to be evaluated with one calibration system.
A typical example is a:
4–20 mA pressure transmitter
The ADT 761A-1.5K generates the required reference pressure while simultaneously measuring the transmitter’s electrical output.
This reduces the need for separate instruments in many field calibration applications.
24 V Loop Power
The instrument provides:
24 V loop power
for compatible process transmitters.
This is particularly useful for two-wire 4–20 mA pressure transmitters.
The calibrator can therefore provide:
- Reference pressure
- Transmitter loop power
- Electrical signal measurement
within one integrated calibration setup.
HART Communication
The Additel ADT 761A-1.5K supports:
HART communication
for compatible smart pressure transmitters.
HART capability allows communication with intelligent field instruments for tasks such as:
- Device identification
- Configuration
- Reading digital process values
- Diagnostics
- Calibration support
This makes the ADT 761A-1.5K particularly useful for modern process instrumentation.
PROFIBUS PA Support
The ADT761A platform also provides support for:
PROFIBUS PA
communication.
This expands the application range beyond conventional analog transmitters and allows the calibration system to be used with compatible digital process instrumentation.
Pressure Switch Testing
The Additel ADT 761A-1.5K can also be used for pressure switch calibration.
Automatic pressure generation allows the pressure to be increased and decreased in a controlled manner.
This makes it possible to determine:
- Switching point
- Reset point
- Hysteresis
with significantly less manual adjustment than a conventional hand-pump setup.
Data Logging
The ADT761A provides integrated data logging capability.
Additel specifies internal storage for up to:
1,000,000 time- and date-stamped readings
This allows measurement data to be recorded directly by the calibrator.
Data logging is particularly useful for:
- Long-term pressure monitoring
- Stability testing
- Calibration documentation
- Process measurements
- Troubleshooting
External Pressure Modules
The ADT761A platform also supports external pressure modules.
This allows additional pressure ranges to be measured beyond the two installed internal modules.
External modules can therefore extend the usefulness of the ADT 761A-1.5K as a general pressure measurement and calibration platform.
The external module does not replace the pressure-generation limits of the internal pneumatic system; it expands pressure measurement capability.
Modern Communication Interfaces
The Additel ADT 761A-1.5K provides several communication interfaces, including:
- Wi-Fi
- Bluetooth
- USB
- Ethernet
These interfaces allow the calibrator to be integrated into modern calibration and data-management workflows.
Wireless communication is particularly useful for field applications, while Ethernet and USB provide convenient wired connectivity in laboratory environments.
Touchscreen Operation
The ADT761A uses a large touchscreen user interface.
Pressure setpoints, measurement functions, calibration tasks and instrument settings can be accessed directly from the display.
The graphical interface simplifies the configuration of automated calibration procedures and reduces the number of external controls required.
Portable High-Pressure Calibration
Generating pneumatic pressure up to 100 bar normally requires comparatively substantial pressure-generation equipment.
The ADT 761A-1.5K combines high pneumatic pressure capability with a portable architecture.
This makes it particularly attractive for applications where pressure instruments cannot easily be removed from the process and transported to a stationary laboratory pressure controller.
The calibrator can instead be brought to the device under test.
Technical Highlights
Model: Additel ADT 761A-1.5K
Device type: Automatic Pneumatic Pressure Calibrator
Maximum pressure: 1,500 psi
Maximum pressure: 100 bar(g)
Maximum pressure: 10 MPa(g)
High-range module: CP1.5K
High-range module span: Approx. -13.5 to 1,500 psig
Pressure types: Gauge and Absolute
Barometric reference: Integrated
Pressure accuracy: Down to 0.01 % FS
Alternative module accuracy: 0.02 % FS depending on configuration
Internal pressure modules: 2
Lowest configurable second internal range: Approx. 35 psi / 2.5 bar(g)
Pressure generation: Integrated electric pneumatic pump
Pressure control: Fully automatic
External pressure module support: Yes
Electrical process measurement: Yes
24 V loop power: Yes
HART: Yes
PROFIBUS PA: Yes
Pressure switch testing: Yes
Automated calibration tasks: Yes
Data logging: Yes
Data storage: Up to 1,000,000 readings
Wi-Fi: Yes
Bluetooth: Yes
USB: Yes
Ethernet: Yes
Technical Data
| Feature | Additel ADT 761A-1.5K |
|---|---|
| Device type | Automatic Pneumatic Pressure Calibrator |
| Maximum pressure | 1,500 psi |
| Maximum pressure | 100 bar(g) |
| Maximum pressure | 10 MPa(g) |
| High-range module | CP1.5K |
| High-range module | -13.5 to 1,500 psig |
| Pressure types | Gauge / Absolute |
| Barometric reference | Integrated |
| Accuracy | 0.01 % FS or 0.02 % FS depending on module |
| Internal pressure modules | 2 |
| Lowest configurable second range | Approx. 35 psi / 2.5 bar(g) |
| Pressure generation | Integrated electric pneumatic pump |
| Pressure control | Fully automatic |
| External pressure modules | Supported |
| Electrical process calibration | Yes |
| 24 V loop power | Yes |
| HART | Yes |
| PROFIBUS PA | Yes |
| Pressure switch testing | Yes |
| Automated tasks | Yes |
| Data logging | Yes |
| Internal logging capacity | Up to 1,000,000 readings |
| Wi-Fi | Yes |
| Bluetooth | Yes |
| USB | Yes |
| Ethernet | Yes |
ADT 761A-1.5K vs. ADT 761A-1K and ADT 761A-500
The ADT761A family provides several configurations for different pneumatic pressure ranges.
| Model | Pressure Range | Pressure Type |
|---|---|---|
| ADT 761A-500 | Approx. -0.9 to 35 bar | Gauge / Absolute |
| ADT 761A-1K | Approx. -0.9 to 70 bar | Gauge / Absolute |
| ADT 761A-1.5K | Approx. -0.9 to 100 bar | Gauge / Absolute |
The ADT 761A-1.5K provides the highest automatic pneumatic pressure generation capability within the ADT761A family.
For applications requiring no more than 35 bar, the ADT 761A-500 can provide a more appropriately sized solution.
For applications up to 70 bar, the ADT 761A-1K provides an intermediate range.
For pneumatic calibration requirements extending to 100 bar / 1,500 psi, the ADT 761A-1.5K is the appropriate high-pressure configuration.
Typical Calibration Applications
The Additel ADT 761A-1.5K Automatic Pressure Calibrator is particularly suitable for calibration and testing of:
- Digital pressure gauges
- Analog pressure gauges
- Gauge pressure transmitters
- Absolute pressure transmitters
- Pressure sensors
- Pressure transducers
- Pressure switches
- 4–20 mA pressure transmitters
- HART pressure transmitters
- PROFIBUS PA pressure transmitters
- Pneumatic process instrumentation
- Industrial pressure measuring equipment
Typical users include:
- Professional calibration laboratories
- Industrial maintenance departments
- Process industry
- Chemical industry
- Pharmaceutical industry
- Energy and power generation
- Instrument manufacturers
- Quality assurance departments
- Field service technicians
Calibration and Service by europascal
Regular calibration of an automatic pressure calibrator is essential for maintaining reliable metrological performance.
The two internal pressure modules and integrated barometric reference should be considered when defining the calibration scope for an ADT 761A-1.5K.
The europascal calibration service provides professional calibration solutions for automatic pressure calibrators, pressure controllers, pressure modules, digital pressure gauges, pressure transmitters and pressure sensors.
europascal can also support customers in selecting the appropriate second internal pressure module, pressure connections, accessories and calibration configuration.
Why Choose the Additel ADT 761A-1.5K?
The Additel ADT 761A-1.5K Precise Automatic Pressure Calibrator combines automatic pneumatic pressure generation up to 1,500 psi / 100 bar, pressure measurement accuracy down to 0.01 % FS, gauge and absolute pressure capability and two internal pressure module positions in one portable calibration platform.
Its integrated CP1.5K high-pressure module covers the full high-pressure range, while a configurable second internal module can optimize measurement performance at lower pressures.
Electrical process calibration, 24 V loop power, HART and PROFIBUS PA communication, automated calibration tasks and extensive data logging make the ADT 761A-1.5K more than just an automatic pressure source.
It is a complete automated pressure and process calibration system designed for professional laboratory and field applications.
Looking for the Additel ADT 761A-1.5K for automatic pneumatic calibration up to 100 bar? Contact europascal for expert advice, suitable module configurations, accessories and professional calibration services.
Further information about the Additel ADT 761A series from europascal can be found here.
Further pressure calibration products from europascal can be found here.
