The Additel ADT 761A-BP Barometric Pressure Calibrator is a fully automatic pressure calibration system specifically designed for the calibration of barometers, barometric pressure sensors and other absolute pressure instruments operating around atmospheric pressure.
Unlike the gauge, differential and high-pressure configurations of the ADT761A family, the ADT 761A-BP is optimized exclusively for:
Absolute Pressure
Its operating range extends from:
100 to 1,200 hPa absolute
or approximately:
1.45 to 17.41 psi absolute
This exceptionally wide barometric range allows the instrument to simulate atmospheric pressures extending far below normal sea-level pressure and up to 1,200 hPa.
The specified pressure accuracy is:
0.01 % FS
with excellent pressure control stability of:
0.02 hPa
The Additel ADT 761A-BP combines precise absolute pressure measurement with automatic pressure generation and closed-loop control. This allows barometers and barometric pressure sensors to be calibrated automatically at multiple pressure points without the manual pressure adjustment required by conventional calibration systems.
The instrument is therefore particularly suitable for professional calibration laboratories, meteorological instrumentation, environmental monitoring, aviation-related pressure instrumentation and manufacturers of barometric pressure sensors.
The europascal calibration service provides professional calibration solutions for pressure calibrators, barometers, absolute pressure instruments, pressure sensors and other pressure measuring equipment.
Your Benefits at a Glance
The Additel ADT 761A-BP Barometric Pressure Calibrator provides:
- Dedicated barometric pressure calibration
- Absolute pressure measurement
- Pressure range from 100 to 1,200 hPa absolute
- Pressure range from approximately 1.45 to 17.41 psi absolute
- Pressure accuracy of 0.01 % FS
- Pressure control stability of 0.02 hPa
- Fully automatic pressure generation
- Automatic closed-loop pressure control
- Integrated electric pump
- Single dedicated internal pressure module
- Two external pressure module connections
- Electrical process measurement
- mA and voltage measurement
- mA source and simulation
- 24 V loop power
- Pressure switch testing
- HART communication
- PROFIBUS PA communication
- Task documentation
- Integrated data logging
- Wi-Fi
- Bluetooth
- USB
- Ethernet
- Color touchscreen
- Rechargeable battery
- Portable laboratory and field design
Designed Specifically for Barometric Pressure Calibration
The Additel ADT 761A-BP differs significantly from the other models in the ADT761A family.
It was specifically developed for:
barometer sensor calibration
Rather than generating gauge or differential pressure, the BP version directly generates and measures absolute pressure over a range of:
100 to 1,200 hPa
This makes the instrument especially useful for calibration applications where atmospheric pressure must be simulated accurately and reproducibly.
Typical devices under test include:
- Digital barometers
- Analog barometers
- Barometric pressure sensors
- Absolute pressure sensors
- Meteorological pressure instruments
- Environmental monitoring systems
- Weather station pressure sensors
- Atmospheric pressure data loggers
Absolute Pressure from 100 to 1,200 hPa
The ADT 761A-BP covers:
100 hPa to 1,200 hPa absolute
The lower end of this range represents a pressure substantially below typical atmospheric pressure at ground level.
The upper end of 1,200 hPa extends above normal sea-level atmospheric pressure.
This allows a very wide range of atmospheric pressure conditions to be generated using a single automatic calibration system.
The pressure range corresponds approximately to:
10 to 120 kPa absolute
or:
0.1 to 1.2 bar absolute
This wide range makes the ADT 761A-BP suitable not only for conventional barometers but also for absolute pressure sensors used over extended atmospheric pressure ranges.
Pressure Accuracy of 0.01 % FS
Additel specifies the accuracy of the ADT 761A-BP as:
0.01 % FS
FS refers to the span of the pressure range.
For the BP configuration, the pressure span is:
1,200 hPa – 100 hPa = 1,100 hPa
This means that 0.01 % of the 1,100 hPa span corresponds to:
0.11 hPa
or:
11 Pa
This illustrates the high level of measurement performance available for barometric pressure calibration.
The manufacturer’s accuracy specification is a one-year accuracy including one-year stability.
Excellent 0.02 hPa Control Stability
In addition to measurement accuracy, stable pressure generation is essential when calibrating a barometer.
Additel specifies the pressure control stability of the ADT 761A-BP as:
0.02 hPa
This corresponds to:
2 Pa
Stable automatic pressure control allows the device under test to settle at each calibration point before its indication is compared with the ADT 761A-BP reference pressure.
This is particularly valuable during automated multipoint calibration procedures.
Fully Automatic Pressure Generation
The Additel ADT 761A-BP contains an integrated electric pump.
The instrument can therefore automatically generate the required absolute pressure without a separate external pressure generator for normal operation within its specified range.
The operator enters the desired pressure setpoint and the calibrator automatically:
- Generates the required pressure
- Approaches the selected pressure
- Regulates the pressure
- Stabilizes the setpoint
- Measures the reference pressure
This significantly simplifies repetitive barometer calibration.
Automatic Multipoint Barometer Calibration
A barometer should normally be evaluated at multiple pressure points rather than only at the current atmospheric pressure.
The automatic pressure generation of the ADT 761A-BP makes it possible to generate a sequence of defined absolute pressures.
For example, a calibration procedure can include increasing and decreasing pressure points throughout the required operating range.
This allows characteristics such as:
- Indication error
- Repeatability
- Hysteresis
- Pressure-dependent deviation
to be evaluated.
Automatic pressure control significantly reduces the manual work required for this type of calibration.
One Dedicated Internal Pressure Module
An important difference between the ADT 761A-BP and most other ADT761A configurations is the internal pressure module architecture.
The ADT 761A-BP uses one internal pressure module.
This internal module is dedicated to the barometric range:
100 to 1,200 hPa absolute
The internal module is not specified as removable.
This differs from the LLP, D, 500, 1K and 1.5K versions, which can accommodate two removable internal pressure modules.
The BP version is therefore optimized as a dedicated barometric calibration system rather than a multi-range gauge pressure calibrator.
Two External Pressure Module Connections
Although the BP version uses one dedicated internal pressure module, the ADT761A platform provides connections for:
two external pressure modules
Compatible Additel external pressure modules can therefore be connected for additional pressure measurement applications.
This expands the measurement flexibility of the instrument beyond its dedicated internal barometric pressure range.
The external modules do not change the automatic pressure generation range of the internal BP system.
Ideal for Meteorological Instruments
Atmospheric pressure is one of the fundamental measurement parameters in meteorology.
Barometric pressure measurements are used in:
- Weather stations
- Meteorological networks
- Environmental monitoring
- Climate research
- Atmospheric measurements
- Industrial environmental monitoring
The Additel ADT 761A-BP provides a convenient method for applying known absolute pressures to barometric instruments under controlled conditions.
Applications in Aviation and Altitude Measurement
Barometric pressure is also fundamental to altitude determination.
Aircraft altimeters and many altitude-related instruments derive altitude information from atmospheric pressure.
The wide absolute pressure range of the ADT 761A-BP makes the instrument interesting for applications involving pressure sensors used in altitude-related measurement systems.
The exact suitability for a specific aviation instrument should always be evaluated against the applicable technical and regulatory requirements.
Electrical Process Functions
The ADT761A platform also provides integrated electrical measurement and source functions.
These functions include:
- mA measurement
- Voltage measurement
- mA sourcing
- 24 V loop power
This can be useful when the barometric or absolute pressure sensor being calibrated provides an electrical output signal.
For example, the ADT 761A-BP can generate the required absolute pressure while the electrical output of a connected transmitter is evaluated.
4–20 mA Pressure Transmitters
Many industrial absolute pressure transmitters use a:
4–20 mA
output signal.
With its integrated electrical functionality, the ADT 761A-BP can support calibration workflows involving both the applied pressure and electrical transmitter output.
The integrated 24 V loop power can also supply compatible two-wire process transmitters.
This reduces the number of separate instruments required for many calibration setups.
HART Communication
The Additel ADT 761A-BP supports:
HART communication
for compatible intelligent field instruments.
HART communication can support:
- Device identification
- Reading digital measurement values
- Device configuration
- Diagnostics
- Calibration workflows
This makes the ADT 761A-BP suitable for modern smart absolute pressure transmitters as well as conventional barometric sensors.
PROFIBUS PA Communication
The ADT761A platform also supports:
PROFIBUS PA
communication.
This provides additional flexibility when working with compatible digital process instrumentation.
Together with automatic absolute pressure generation and electrical measurement functions, this makes the ADT 761A-BP a versatile calibration platform.
Task Documentation
The Additel ADT 761A-BP supports task documentation.
Recurring calibration procedures can therefore be organized as defined workflows.
This is particularly useful when several barometers of the same type must be calibrated using an identical sequence of pressure points.
Standardized calibration procedures improve consistency and reduce repetitive manual operation.
Integrated Data Logging
The ADT761A platform provides integrated:
Data Logging
Additel specifies storage for up to:
1,000,000 readings
Measurement data can therefore be recorded directly by the calibration system.
This can be useful for:
- Calibration documentation
- Pressure stability testing
- Long-term measurements
- Environmental monitoring
- Sensor evaluation
- Troubleshooting
Modern Communication Interfaces
The Additel ADT 761A-BP provides modern communication interfaces including:
- Wi-Fi
- Bluetooth
- USB
- LAN / Ethernet
These interfaces facilitate integration into digital calibration environments and communication with computers and compatible peripheral equipment.
Color Touchscreen and Keypad Operation
The ADT761A features a:
7-inch TFT color touchscreen
with a resolution of:
800 × 480 pixels
The instrument can be operated using the touchscreen and keypad.
Pressure setpoints, measurement functions, calibration tasks and instrument settings can be accessed directly through the user interface.
Rechargeable Battery
The ADT761A uses a rechargeable Li-ion battery.
Typical battery operation is approximately:
8 hours
and charging takes less than approximately:
4 hours
This makes the ADT 761A-BP suitable not only for stationary laboratory use but also for mobile calibration applications.
Compact Portable Design
The ADT761A platform measures approximately:
299 × 193 × 192 mm
and weighs less than approximately:
7.95 kg
The combination of automatic pressure generation, precision measurement, electrical functions and rechargeable battery operation provides a portable solution for both laboratory and field calibration.
Technical Highlights
Model: Additel ADT 761A-BP
Device type: Automatic Barometric Pressure Calibrator
Pressure range: 100 to 1,200 hPa absolute
Pressure range: 10 to 120 kPa absolute
Pressure range: 0.1 to 1.2 bar absolute
Imperial range: Approx. 1.45 to 17.41 psi absolute
Pressure type: Absolute
Pressure accuracy: 0.01 % FS
Control stability: 0.02 hPa
Internal pressure modules: 1
Internal module removable: No
External pressure modules: 2
Automatic pressure generation: Yes
Integrated electric pump: Yes
Automatic pressure control: Yes
Electrical measurement: Yes
mA source: Yes
24 V loop power: Yes
Pressure switch testing: Yes
HART: Yes
PROFIBUS PA: Yes
Task documentation: Yes
Data logging: Yes
Data logging capacity: Up to 1,000,000 readings
Wi-Fi: Yes
Bluetooth: Yes
USB: Yes
Ethernet: Yes
Display: 7-inch TFT color touchscreen
Display resolution: 800 × 480 pixels
Battery: Rechargeable Li-ion
Typical battery operation: Approx. 8 hours
Dimensions: Approx. 299 × 193 × 192 mm
Weight: Less than approx. 7.95 kg
Technical Data
| Feature | Additel ADT 761A-BP |
|---|---|
| Device type | Automatic Barometric Pressure Calibrator |
| Pressure range | 100 to 1,200 hPa absolute |
| Pressure range | 10 to 120 kPa absolute |
| Pressure range | 0.1 to 1.2 bar absolute |
| Imperial range | 1.45 to 17.41 psi absolute |
| Pressure type | Absolute |
| Accuracy | 0.01 % FS |
| Control stability | 0.02 hPa |
| Internal pressure modules | 1 |
| Removable internal module | No |
| External pressure modules | 2 |
| Automatic pressure generation | Yes |
| Integrated electric pump | Yes |
| Automatic pressure control | Yes |
| Electrical process functions | Yes |
| mA / V measurement | Yes |
| mA source | Yes |
| 24 V loop power | Yes |
| Pressure switch test | Yes |
| HART | Yes |
| PROFIBUS PA | Yes |
| Task documentation | Yes |
| Data logging | Yes |
| Communication | Wi-Fi, Bluetooth, USB, Ethernet |
| Display | 7-inch TFT, 800 × 480 |
| Battery | Rechargeable Li-ion |
| Typical battery operation | Approx. 8 hours |
| Weight | <7.95 kg |
ADT 761A-BP vs. Other ADT 761A Models
The ADT761A family covers very different pressure calibration applications.
| Model | Pressure Range | Pressure Type |
|---|---|---|
| ADT 761A-LLP | ±75 mbar | Differential / Gauge |
| ADT 761A-D | -0.95 to 2.5 bar | Differential / Gauge |
| ADT 761A-500 | -0.9 to 35 bar | Gauge / Absolute |
| ADT 761A-1K | -0.9 to 70 bar | Gauge / Absolute |
| ADT 761A-1.5K | -0.9 to 100 bar | Gauge / Absolute |
| ADT 761A-BP | 100 to 1,200 hPa | Absolute |
The ADT 761A-BP is fundamentally different from the other configurations.
It is not intended as a general-purpose gauge pressure calibrator.
Instead, its dedicated 100 to 1,200 hPa absolute pressure range is optimized specifically for barometric pressure calibration.
Typical Calibration Applications
The Additel ADT 761A-BP Barometric Pressure Calibrator is particularly suitable for calibration and testing of:
- Barometers
- Digital barometers
- Barometric pressure sensors
- Absolute pressure sensors
- Atmospheric pressure sensors
- Meteorological instruments
- Weather station sensors
- Environmental monitoring systems
- Absolute pressure transmitters
- Smart HART pressure transmitters
- Barometric data loggers
- Altitude-related pressure sensors
Typical users include:
- Professional calibration laboratories
- Meteorological laboratories
- Weather services
- Environmental monitoring organizations
- Research laboratories
- Sensor manufacturers
- Instrument manufacturers
- Quality assurance departments
- Industrial calibration departments
- Mobile calibration services
Calibration and Service by europascal
Accurate barometric pressure measurement is important in meteorology, environmental monitoring, laboratory measurements and many industrial applications.
Regular calibration provides traceability and helps identify changes in sensor performance over time.
The europascal calibration service provides professional calibration solutions for pressure calibrators, barometers, absolute pressure sensors, pressure transmitters and other pressure measuring instruments.
europascal can also support customers in selecting the appropriate Additel calibration system, pressure connections and accessories.
Why Choose the Additel ADT 761A-BP?
The Additel ADT 761A-BP Precise Barometric Pressure Calibrator is specifically designed for automated calibration of barometric pressure sensors.
Its dedicated absolute pressure range from 100 to 1,200 hPa, pressure accuracy of 0.01 % FS and excellent 0.02 hPa control stability make it particularly suitable for precise barometer calibration.
Unlike the other ADT761A configurations, the BP version uses one dedicated internal absolute pressure module rather than two removable internal modules.
An integrated electric pump automatically generates and controls the required absolute pressure, while electrical process functions, HART and PROFIBUS PA communication, task documentation and data logging support complete calibration workflows.
This combination makes the ADT 761A-BP an excellent solution for professional calibration laboratories, meteorological applications, sensor manufacturers and mobile field calibration.
Looking for an automatic solution for precise barometer and atmospheric pressure sensor calibration? Contact europascal for expert advice on the Additel ADT 761A-BP, suitable 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.
