The europascal BA4-200B Automatic Deadweight Tester is a high-performance pneumatic pressure standard designed for precise and efficient pressure calibration from 2.5 to 200 bar. Combining the fundamental physical measurement principle of a piston gauge with automatic pressure calculation, motorized weight rotation, dynamic piston position visualization and digital data transfer, the BA4-200B is an advanced solution for professional calibration laboratories and industrial pressure metrology.
The measuring range extends from 2.5 to 200 bar, corresponding to 250 to 20,000 kPa or 25 to 3,000 psi. The BA4-200B provides an accuracy of 0.01 % of reading, with an enhanced accuracy of up to 0.008 % available on request.
As the highest-pressure pneumatic model in the europascal Aremeca BA4 automatic series, the BA4-200B is particularly suitable for laboratories that need to generate high pneumatic reference pressures while avoiding the use of a hydraulic pressure medium.
The instrument uses a single piston-cylinder system with a tungsten carbide piston and treated steel cylinder. The complete deadweight tester without its weight set weighs approximately 24 kg.
The integrated calculator automatically displays the pressure generated by the deadweight tester while considering relevant physical quantities. Motorized weight rotation and dynamic visualization of the piston position provide additional operator assistance during calibration.
europascal supports professional users with product selection, system configuration, maintenance and calibration. The europascal calibration service provides professional calibration solutions for deadweight testers, pressure gauges, pressure sensors, transmitters and other pressure measuring equipment.
Your Benefits at a Glance
The europascal BA4-200B Automatic Deadweight Tester combines high-pressure pneumatic operation with advanced automatic functions.
Key benefits include:
- Automatic pneumatic deadweight tester
- Measuring range from 2.5 to 200 bar
- Measuring range from 250 to 20,000 kPa
- Measuring range from 25 to 3,000 psi
- Maximum pressure of 200 bar / 20 MPa
- Accuracy of 0.01 % of reading
- Accuracy up to 0.008 % available on request
- Single precision piston-cylinder system
- Tungsten carbide piston
- Treated steel cylinder
- Dry air as pressure source
- Motorized weight rotation
- Dynamic piston position visualization
- Automatic display of generated pressure
- Integrated temperature measurement
- Integrated atmospheric pressure measurement
- Automatic consideration of environmental quantities
- Computer data transfer for traceability
- Non-magnetic stainless steel weights
- Different pressure units available
- Standard or customer-specific local gravity
- Approx. 24 kg device weight without weights
- Factory calibration certificate traceable to national standards
- Optional DAkkS/DKD accredited calibration certificate
- Professional calibration and service from europascal
The combination of a pneumatic range up to 200 bar and automatic operation makes the BA4-200B particularly attractive for demanding calibration laboratories.
Ideal for Demanding Calibration Applications
The europascal BA4-200B is designed to test, adjust and calibrate mechanical and electronic pressure measuring instruments by comparison.
Typical devices under test include:
- Precision pressure gauges
- Digital pressure gauges
- Reference pressure indicators
- Pressure sensors
- Pressure transmitters
- Pressure transducers
- Pressure switches
- Pneumatic process instruments
- Secondary pressure standards
- Industrial pressure measuring equipment
The instrument can be used in professional calibration laboratories as well as industrial environments where reliable reference pressures and long-term stability are required.
Its pneumatic operation is especially valuable when the device under test should remain free from hydraulic calibration oil.
Pressure Range from 2.5 to 200 bar
The europascal BA4-200B covers a measuring range from:
2.5 to 200 bar
This corresponds to:
250 to 20,000 kPa
or:
25 to 3,000 psi
The maximum pressure is therefore:
200 bar / 20 MPa
This makes the BA4-200B the highest-pressure model within the pneumatic BA4 automatic deadweight tester range.
For lower pneumatic pressure ranges, the BA4 series also includes the BA4-60B and BA4-120B.
Accuracy of 0.01 % of Reading
The europascal BA4-200B Automatic Deadweight Tester provides a specified accuracy of:
0.01 % of reading
For applications requiring enhanced performance, an accuracy of:
up to 0.008 %
is available on request.
This makes the BA4-200B suitable for demanding pressure calibration tasks requiring excellent accuracy across a broad measuring range.
The complete measurement uncertainty of an actual calibration also depends on additional influence quantities such as:
- Calibration of the masses
- Effective piston-cylinder area
- Local gravitational acceleration
- Air buoyancy
- Piston temperature
- Atmospheric pressure
- Pressure deformation
- Pressure head difference
- Repeatability
- Resolution and performance of the device under test
These quantities should be considered when establishing a complete measurement uncertainty budget.
Fundamental Piston Gauge Measurement Principle
The europascal BA4-200B combines advanced electronic functions with the proven physical measurement principle of a piston gauge.
The fundamental pressure relationship is:
p = F / A
where:
p = generated pressure
F = force acting on the piston
A = effective piston area
The force generated by the calibrated masses is primarily determined by:
F = m × g
where:
m = applied mass
g = gravitational acceleration
The simplified relationship is therefore:
p = (m × g) / A
For precision pressure calibration, further correction quantities must be considered.
The BA4 concept supports the operator by automatically displaying the pressure generated by the deadweight tester according to relevant physical quantities.
Precision Single-Piston System
The europascal BA4-200B uses one piston-cylinder system for its complete measuring range.
The piston is manufactured from:
tungsten carbide
while the cylinder is manufactured from:
treated steel
The piston-cylinder assembly forms the central metrological element of the pressure balance.
The single-piston configuration simplifies operation because no change between different piston-cylinder systems is required during normal operation across the specified pressure range.
The manufacturer specifies a repeatability of 1 × 10⁻⁵ and sensitivity of 0.5 × 10⁻⁵ for the BA4 piston-cylinder system.
Automatic Pressure Calculation
A major advantage of the europascal BA4-200B is the integrated calculator.
The calculator provides:
- Dynamic display of the piston position
- Automatic display of the generated pressure
- Consideration of measured physical quantities
- Computer data transfer
- Improved traceability of calibration data
This reduces the amount of manual calculation required during calibration.
The operator can therefore concentrate on the calibration procedure while the integrated system supports the calculation and visualization of the generated reference pressure.
Dynamic Piston Position Visualization
Correct piston position is essential for reliable piston gauge measurements.
The BA4-200B therefore provides a dynamic display of the piston position.
This allows the operator to monitor the condition of the piston directly during calibration.
The visualization provides immediate assistance when adjusting the system to the correct measurement condition and simplifies repetitive calibration work.
This function is particularly valuable when multiple pressure points must be generated during routine laboratory calibration.
Motorized Weight Rotation
The europascal BA4-200B incorporates motorized rotation of the weight set using an electric drive.
Rotation of the piston and masses supports stable operation of the piston-cylinder assembly and helps minimize friction-related effects.
Motorized operation removes the need for the user to manually rotate the mass stack.
This increases operating convenience and makes the BA4-200B particularly suitable for regular or intensive calibration applications.
Integrated Environmental Measurements
Environmental conditions influence high-accuracy deadweight tester measurements.
The BA4 system therefore integrates measurements required for automatic pressure calculation.
The manufacturer specifies:
Temperature measurement: ±0.1 °C
Atmospheric pressure measurement: ±1 hPa
These values can be incorporated into the automatic calculation of the generated pressure.
The BA4-200B is calibrated under defined reference conditions of:
Temperature: 20 °C
Atmospheric pressure: 1013.25 hPa
Relative humidity: 50 %
Gravitational acceleration: 9.80665 m/s²
When operating under different conditions, the generated pressure must be recalculated according to the relevant influence quantities. The integrated calculator supports this process.
Pneumatic Operation with Dry Air
The europascal BA4-200B is a pneumatic deadweight tester.
The pressure source is:
dry air
The pressure connection is a 1/4-inch cylindrical female gas connection, and the instrument must be connected to a suitable external pressure source.
Pneumatic operation provides a significant advantage when calibrating pressure instruments that should not be contaminated with hydraulic oil.
This is particularly relevant for sensors, transmitters, pressure switches and other measuring instruments intended for gas applications.
The piston-cylinder system includes automatic lubrication. A colorless mineral oil is used for this lubrication system, while the pressure generation itself remains pneumatic.
Connections and Installation
The BA4-200B is designed for professional laboratory installation.
The standard connection for the device under test is:
Swivel G1/2
Other fittings are available as options.
A leveling bubble and adjustable feet are provided to correctly align the deadweight tester.
Correct leveling is important for the operation of a piston gauge because the piston must move vertically and freely during measurement.
The capstan used to regulate pressure is removable for transport.
Flexible Pressure Units
The BA4-200B can be supplied with its main weight set marked according to the required pressure unit.
Typical units include:
bar
kPa
psi
and other available pressure units.
The integrated calculator can also convert the result of the weight set into the required pressure unit.
This provides additional flexibility for laboratories calibrating instruments with different engineering units.
Standard and Local Gravity
The force generated by the calibrated masses depends directly on gravitational acceleration.
The conventional standard value is:
g = 9.80665 m/s²
However, local gravitational acceleration varies according to geographical location.
The BA4-200B can therefore be adjusted for either standard gravity or a specified local gravity value.
Correct consideration of gravity is especially important for high-accuracy pressure standards because the generated force is directly proportional to gravitational acceleration.
Technical Highlights
Model: europascal BA4-200B
Device type: Automatic Pneumatic Deadweight Tester
Product family: BA4 Automatic
Configuration: Single piston
Number of pistons: 1
Measuring range: 2.5 to 200 bar
Measuring range: 250 to 20,000 kPa
Measuring range: 25 to 3,000 psi
Maximum pressure: 200 bar / 20 MPa
Accuracy: 0.01 % of reading
Enhanced accuracy: Up to 0.008 % on request
Measurement principle: Piston gauge
Pressure source: Dry air
Piston material: Tungsten carbide
Cylinder material: Treated steel
Motorized weight rotation: Integrated
Dynamic piston position visualization: Integrated
Automatic pressure calculation: Integrated
Temperature measurement: ±0.1 °C
Atmospheric pressure measurement: ±1 hPa
Computer data transfer: Integrated
Device weight without weights: Approx. 24 kg
Standard gravity: 9.80665 m/s²
DUT connection: Swivel G1/2 standard
Operating temperature: 18 to 28 °C
Technical Data
| Feature | europascal BA4-200B |
|---|---|
| Manufacturer | europascal Aremeca |
| Model | BA4-200B |
| Device type | Automatic Pneumatic Deadweight Tester |
| Product family | BA4 Automatic |
| Measuring range | 2.5–200 bar |
| Measuring range | 250–20,000 kPa |
| Measuring range | 25–3,000 psi |
| Maximum pressure | 200 bar / 20 MPa |
| Accuracy | 0.01 % of reading |
| Enhanced accuracy | Up to 0.008 % on request |
| Number of pistons | 1 |
| Piston material | Tungsten carbide |
| Cylinder material | Treated steel |
| Pressure source | Dry air |
| Device weight without weights | Approx. 24 kg |
| Motorized mass rotation | Integrated |
| Piston position display | Dynamic |
| Automatic pressure display | Integrated |
| Temperature measurement | ±0.1 °C |
| Atmospheric pressure measurement | ±1 hPa |
| PC data transfer | Integrated |
| Standard DUT connection | Swivel G1/2 |
| Standard gravity | 9.80665 m/s² |
| Operating temperature | 18–28 °C |
BA4-200B Compared with the BA2-200B
The BA4-200B and BA2-200B cover the same nominal pneumatic pressure range, but the BA4-200B provides a significantly higher level of integrated automation.
| Feature | BA2-200B | BA4-200B |
|---|---|---|
| Pressure range | 2.5–200 bar | 2.5–200 bar |
| Pneumatic operation | Yes | Yes |
| Single piston | Yes | Yes |
| Motorized mass rotation | Optional | Integrated |
| Dynamic piston position | Optional | Integrated |
| Automatic pressure calculation | Optional | Integrated |
| Environmental measurement | Optional calculator configuration | Integrated |
| Computer data transfer | Optional | Integrated |
| Device weight without masses | Approx. 22 kg | Approx. 24 kg |
The BA2-200B is an excellent choice when a conventional high-performance pneumatic deadweight tester is required.
The BA4-200B is designed for laboratories that require increased automation, integrated calculation and improved operator assistance during regular or intensive calibration work.
BA4 Automatic Deadweight Tester Series
The europascal Aremeca BA4 pneumatic automatic series includes:
BA4-60B: 0.5 to 60 bar
BA4-120B: 1 to 120 bar
BA4-200B: 2.5 to 200 bar
The BA4-200B provides the highest pressure capability in this pneumatic automatic series.
It is therefore particularly suitable for laboratories requiring automated pneumatic pressure calibration at pressures significantly above 100 bar.
Further europascal Aremeca products can be found here.
Calibration Certificate and Service
The europascal BA4-200B is supplied with an AREMECA factory calibration certificate traceable to national standards.
An optional DAkkS/DKD accredited calibration certificate is also available.
The manufacturer recommends calibration of the device every 2 to 5 years depending on use.
The europascal calibration service provides professional calibration solutions for deadweight testers, piston gauges, pressure gauges, pressure sensors, transmitters and other pressure measuring equipment.
Regular calibration and appropriate maintenance help ensure the long-term metrological performance of the pressure standard.
Why Choose the europascal BA4-200B?
The europascal BA4-200B Precise Automatic Deadweight Tester combines a pneumatic measuring range from 2.5 to 200 bar with an accuracy of 0.01 % of reading and an enhanced accuracy of up to 0.008 % on request.
Its single tungsten carbide piston, treated steel cylinder and fundamental piston gauge measurement principle provide a robust basis for professional pressure calibration.
Motorized weight rotation, dynamic piston position visualization and automatic pressure calculation significantly simplify routine operation compared with a conventional manual deadweight tester.
Integrated environmental measurements and computer data transfer provide additional support for traceable and efficient calibration workflows.
For laboratories performing regular or intensive high-accuracy pneumatic pressure calibrations up to 200 bar, the BA4-200B provides an excellent combination of fundamental pressure metrology and modern automation.
Typical Calibration Applications with the europascal BA4-200B
The europascal BA4-200B is particularly suitable for calibrating precision pressure gauges, digital pressure gauges, reference pressure indicators, pressure sensors, pressure transmitters, pressure transducers, pressure switches and pneumatic process instruments.
Typical application areas include professional calibration laboratories, pressure instrument manufacturers, industrial quality assurance, mechanical engineering, plant engineering, research and development and specialized high-pressure pneumatic calibration.
Looking for the europascal BA4-200B or an automatic pneumatic pressure calibration solution? Contact europascal for expert advice, configuration options and professional calibration services tailored to your requirements.
