The europascal BH2-2500B High Pressure Deadweight Tester is a high-performance hydraulic pressure standard designed for precise calibration applications from 40 to 2,500 bar. With an accuracy of 0.02 %, the BH2-2500B provides reliable physical pressure generation for professional calibration laboratories, pressure instrument manufacturers, research facilities and industrial quality assurance departments.
The instrument covers a measuring range from 40 to 2,500 bar, corresponding to 4 to 250 MPa, 4,000 to 250,000 kPa and 600 to 36,200 psi according to the manufacturer.
The BH2-2500B uses a single precision piston-cylinder system and operates hydraulically with oil. The reference pressure is generated physically by calibrated masses acting on the piston-cylinder assembly.
The robust BH2 platform combines traditional piston gauge technology with a scalable design. The standard instrument provides straightforward manual operation, while optional motorization, piston position visualization and automatic pressure calculation can be added for laboratories requiring greater operating convenience and digital calibration workflows.
The europascal calibration service provides professional calibration solutions for deadweight testers, pressure balances, pressure gauges, pressure sensors, transmitters and other pressure measuring equipment.
Your Benefits at a Glance
The europascal BH2-2500B High Pressure Deadweight Tester provides:
- Hydraulic high-pressure deadweight tester
- Measuring range from 40 to 2,500 bar
- Measuring range from 4 to 250 MPa
- Measuring range from 4,000 to 250,000 kPa
- Manufacturer range from 600 to 36,200 psi
- Accuracy of 0.02 %
- Single-piston configuration
- Precision piston-cylinder measurement principle
- Hydraulic operation with oil
- Stainless steel calibration masses
- Robust and mobile BH2 design
- Several pressure units available
- Standard or customer-specific gravity
- Manual operation in the standard configuration
- Optional motorized mass rotation
- Optional piston position visualization
- Optional calculator module
- Optional automatic pressure calculation
- Optional computer data transfer
- Suitable for professional high-pressure calibration laboratories
Measuring Range from 40 to 2,500 bar
The europascal BH2-2500B covers a hydraulic pressure range from:
40 to 2,500 bar
This corresponds to:
4 to 250 MPa
or:
4,000 to 250,000 kPa
AREMECA specifies the imperial measuring range as:
600 to 36,200 psi
The maximum pressure is therefore:
2,500 bar / 250 MPa
This broad pressure range makes the BH2-2500B particularly suitable for laboratories requiring calibration of a wide variety of hydraulic pressure instruments.
Accuracy of 0.02 %
The manufacturer specifies an accuracy of:
0.02 %
for the europascal BH2-2500B.
The actual measurement uncertainty achieved during a calibration additionally depends on the individual calibration data, environmental conditions, operating procedure and the characteristics of the device under test.
For demanding calibration work, the uncertainty budget should therefore always be evaluated using the data from the individual calibration certificate.
Physical Piston Gauge Measurement Principle
The europascal BH2-2500B High Pressure Deadweight Tester operates according to the fundamental physical principle of a piston gauge.
The basic relationship is:
p = F / A
where:
p = generated pressure
F = force acting on the piston
A = effective piston area
The gravitational force generated by the calibration masses is primarily determined by:
F = m × g
where:
m = applied mass
g = gravitational acceleration
The simplified relationship is therefore:
p = (m × g) / A
This direct physical relationship between mass, gravitational acceleration and effective piston area forms the basis of pressure generation with a deadweight tester.
For high-accuracy calibration, additional correction quantities can be considered.
Single-Piston Configuration
The europascal BH2-2500B is designed as a:
single-piston deadweight tester
The instrument incorporates:
one precision piston-cylinder system
This single-piston configuration covers the complete specified measuring range from 40 to 2,500 bar.
A single piston system provides straightforward operation because the operator does not need to switch between separate low-pressure and high-pressure piston-cylinder assemblies within the specified range.
Hydraulic Operation with Oil
The BH2-2500B is a hydraulic pressure balance operating with:
oil
Hydraulic operation is particularly suitable for generating high pressures because liquids have relatively low compressibility compared with gases.
Correct filling and venting of the hydraulic system are important for stable operation.
Trapped gas can influence settling time and pressure stability, while contamination can adversely affect precision hydraulic components.
Compatibility between the pressure medium and the connected device under test should therefore always be verified.
High-Pressure Calibration up to 250 MPa
A maximum pressure of 2,500 bar corresponds to:
250 MPa
At these pressure levels, all pressure-containing components of the calibration system must be suitable for the maximum applied pressure.
This includes:
- High-pressure tubing
- Pressure fittings
- Adapters
- Valves
- Seals
- Pressure generator
- Device under test
- Associated safety components
Correct high-pressure operating procedures are essential.
The system must be completely depressurized before pressure connections are changed.
Measurement Uncertainty Contributions
The complete measurement uncertainty of a calibration does not depend only on the specified accuracy of the pressure balance.
Relevant influence quantities can include:
- Calibration uncertainty of the masses
- Effective piston area
- Pressure coefficient of the piston-cylinder system
- Elastic deformation under pressure
- Local gravitational acceleration
- Air buoyancy
- Piston-cylinder temperature
- Thermal expansion
- Hydraulic fluid properties
- Hydrostatic head difference
- Repeatability
- Sensitivity
- Pressure stability
- Resolution of the device under test
- Environmental conditions
At pressures up to 250 MPa, the pressure dependence of the effective piston area can be an important contribution.
The final measurement uncertainty should therefore be calculated using the actual calibration data for the individual pressure balance.
Stainless Steel Calibration Masses
The BH2 series uses:
stainless steel calibration masses
The calibrated masses generate the gravitational force acting on the precision piston.
Together with the effective piston area and gravitational acceleration, these masses determine the generated reference pressure.
Different units can be selected for the principal set of calibration masses, allowing the system to be adapted to the requirements of the calibration laboratory.
Choice of Pressure Units
The BH2 platform is available with different pressure units.
Depending on the selected configuration, these can include:
- bar
- kPa
- MPa
- psi
- kg/cm²
Additional or intermediate mass sets can also be selected when different engineering units are required.
This provides additional flexibility for laboratories calibrating instruments from different manufacturers or for international customers.
Standard or Local Gravity
The force generated by the calibration masses depends directly on gravitational acceleration.
The conventional standard value is:
g = 9.80665 m/s²
However, actual gravitational acceleration varies geographically.
The BH2-2500B can therefore be configured for:
standard gravity
or:
customer-specific local gravity
The desired gravity value should be specified when ordering.
Using the correct local gravity value is particularly important for high-accuracy pressure calibration because a relative difference in gravitational acceleration directly influences the force generated by the calibration masses.
Robust BH2 Platform
The BH2 series is designed as a high-performance deadweight tester platform with a focus on:
- Robust construction
- Easy operation
- Mobility
- Scalable functionality
- Precision piston-cylinder systems
- Stainless steel calibration masses
- Different pressure units
- Gravity adjustment
The standard BH2-2500B therefore provides a straightforward physical pressure reference that can be expanded according to laboratory requirements.
Optional OP0004 Motorization
The europascal BH2-2500B can be equipped with:
Option OP0004
This option adds:
- Motorized rotation of the masses
- Visualization of the piston position using indicator lights
Rotation of the piston helps minimize friction effects between the piston and cylinder.
Motorized rotation reduces manual intervention during repetitive calibration procedures and provides greater operating convenience.
The piston position indication additionally helps the operator maintain the piston within its correct working position.
Optional OP0301 Calculator Module
For more advanced calibration workflows, the BH2-2500B can be equipped with:
Option OP0301
This option provides functions such as:
- Motorized operation
- Dynamic piston position visualization
- Environmental sensors
- Calculator module
- Automatic pressure calculation
- Automatic display of generated pressure
- Calibration data traceability
- Computer data transfer
The automatic calculation can take relevant environmental quantities into account according to the system configuration.
This allows the traditional BH2 pressure balance to be integrated more efficiently into modern digital calibration workflows.
Traceability and Calibration Documentation
A high-pressure deadweight tester is a reference instrument whose metrological characteristics must be known and documented.
Relevant parameters include:
- Effective piston area
- Pressure coefficient
- Calibration mass values
- Gravity value
- Piston-cylinder characteristics
- Temperature behavior
- Repeatability
A suitable calibration certificate provides the information required to calculate the reference pressure and associated measurement uncertainty.
Accredited calibration certificates can be selected according to the required calibration configuration.
Technical Highlights
Model: europascal BH2-2500B
Device type: High Pressure Hydraulic Deadweight Tester
Product family: BH2 High Performance
Configuration: Single piston
Number of pistons: 1
Measuring range: 40 to 2,500 bar
Measuring range: 4 to 250 MPa
Measuring range: 4,000 to 250,000 kPa
Manufacturer imperial range: 600 to 36,200 psi
Maximum pressure: 2,500 bar / 250 MPa
Accuracy: 0.02 %
Measurement principle: Piston gauge / deadweight tester
Pressure medium: Oil
Calibration masses: Stainless steel
Standard gravity: 9.80665 m/s²
Customer-specific gravity: Available
Different pressure units: Available
Motorized mass rotation: Optional OP0004 / OP0301
Piston position visualization: Optional
Automatic pressure calculation: Optional OP0301
Computer data transfer: Optional OP0301
Technical Data
| Feature | europascal BH2-2500B |
|---|---|
| Manufacturer | europascal Aremeca |
| Model | BH2-2500B |
| Device type | High Pressure Hydraulic Deadweight Tester |
| Product family | BH2 |
| Configuration | Single piston |
| Number of pistons | 1 |
| Measuring range | 40–2,500 bar |
| Measuring range | 4–250 MPa |
| Measuring range | 4,000–250,000 kPa |
| Manufacturer imperial range | 600–36,200 psi |
| Maximum pressure | 2,500 bar / 250 MPa |
| Accuracy | 0.02 % |
| Measurement principle | Piston gauge |
| Pressure medium | Oil |
| Calibration masses | Stainless steel |
| Standard gravity | 9.80665 m/s² |
| Special gravity | Available |
| Mass rotation | Manual as standard |
| Motorization | Optional |
| Piston position visualization | Optional |
| Automatic pressure calculation | Optional OP0301 |
| Computer data transfer | Optional OP0301 |
Position within the BH2 High-Pressure Series
The BH2 series provides several high-pressure configurations for different maximum pressure requirements.
| Model | Pressure Range |
|---|---|
| BH2-2000B | 40–2,000 bar |
| BH2-2500B | 40–2,500 bar |
| BH2-3000B | 40–3,000 bar |
| BH2-4000B | 40–4,000 bar |
| BH2-5000B | 40–5,000 bar |
| BH2-6000B | 200–6,000 bar |
| BH2-7000B | 200–7,000 bar |
The BH2-2500B therefore provides an attractive solution for laboratories requiring pressure calibration up to 250 MPa without moving to the larger pressure ranges of the 3,000, 4,000 or 5,000 bar models.
BH2-2500B vs. BH2-2000B
The BH2-2500B extends the pressure capability of the BH2-2000B while retaining the same lower measuring limit.
| Feature | BH2-2500B | BH2-2000B |
|---|---|---|
| Minimum pressure | 40 bar | 40 bar |
| Maximum pressure | 2,500 bar | 2,000 bar |
| Maximum pressure | 250 MPa | 200 MPa |
| Accuracy | 0.02 % | 0.02 % |
| Number of pistons | 1 | 1 |
| Pressure medium | Oil | Oil |
| Standard operation | Manual | Manual |
| Motorization | Optional | Optional |
| Automatic calculation | Optional | Optional |
The BH2-2500B is therefore the appropriate choice when calibration points between 2,000 and 2,500 bar are required.
Typical Calibration Applications
The europascal BH2-2500B High Pressure Deadweight Tester is suitable for testing, adjustment and calibration of:
- High-pressure gauges
- Digital pressure gauges
- Pressure sensors
- Pressure transducers
- Pressure transmitters
- Pressure switches
- Reference pressure instruments
- Hydraulic high-pressure systems
- Industrial pressure measuring equipment
Typical users include:
- Professional calibration laboratories
- Pressure instrument manufacturers
- Industrial quality assurance departments
- Research laboratories
- High-pressure technology facilities
- Calibration service organizations
Calibration and Traceability
Regular calibration of a high-pressure deadweight tester is important for maintaining reliable metrological performance.
Important calibration parameters include:
- Effective piston area
- Pressure coefficient
- Piston-cylinder characteristics
- Calibration mass values
- Local gravitational acceleration
- Temperature
- Repeatability
- Relevant correction quantities
The europascal calibration service provides professional calibration solutions for pressure balances, deadweight testers, high-pressure gauges, pressure sensors and pressure transmitters.
europascal can also provide support with maintenance, configuration and selection of suitable high-pressure calibration equipment.
Why Choose the europascal BH2-2500B?
The europascal BH2-2500B Precise High Pressure Deadweight Tester combines a broad hydraulic pressure range from 40 to 2,500 bar with an accuracy of 0.02 % and the proven physical measurement principle of a piston gauge.
Its single-piston configuration provides straightforward operation throughout the complete specified pressure range, while stainless steel calibration masses provide the physical force reference required for reliable pressure generation.
The scalable BH2 platform allows the standard manually operated instrument to be expanded with motorized mass rotation, piston position visualization, automatic pressure calculation and computer data transfer.
For professional laboratories requiring a physical hydraulic pressure reference from 40 bar up to 250 MPa, the BH2-2500B provides an excellent combination of pressure range, metrological performance, robust construction and configurable functionality.
Looking for the europascal BH2-2500B or a hydraulic high-pressure calibration solution up to 2,500 bar? Contact europascal for expert advice, system configuration and professional calibration services tailored to your requirements.
