The europascal BH2-150B Hydraulic Deadweight Tester is a high-performance single-piston pressure standard designed for precise hydraulic pressure calibration from 0.5 to 150 bar. With an accuracy of 0.01 % of reading, optionally available with an enhanced accuracy of up to 0.006 % on request, the BH2-150B provides a reliable physical pressure reference for professional calibration laboratories, industrial metrology, quality assurance, research and development.
The measuring range corresponds to 50 to 15,000 kPa or 10 to 2,000 psi. A single precision piston-cylinder system covers the complete measuring range, providing straightforward operation without changing between different pistons.
The BH2-150B operates according to the fundamental physical principle of a piston gauge. Precisely calibrated masses generate a defined force on a characterized piston-cylinder assembly. The hydraulic pressure generated by the system balances this force and provides an accurate reference pressure for comparison with the device under test.
The system uses H15 oil with a density of approximately 845 kg/m³ as the pressure medium. The typical piston area is 15.6970 mm². The piston is manufactured from tungsten carbide, while the cylinder is manufactured from treated steel. Hydraulic pressure generation is provided by the CH2-1250B generator base.
europascal supports professional users with product selection, configuration, maintenance and calibration. The europascal calibration service provides professional calibration solutions for deadweight testers, piston gauges, pressure gauges, pressure sensors, transmitters and other pressure measuring equipment.
Your Benefits at a Glance
The europascal BH2-150B Hydraulic Deadweight Tester combines a broad hydraulic pressure range with high accuracy and a robust single-piston design.
Key benefits include:
- High-performance hydraulic deadweight tester
- Measuring range from 0.5 to 150 bar
- Measuring range from 50 to 15,000 kPa
- Measuring range from 10 to 2,000 psi
- Maximum pressure of 150 bar / 15 MPa
- Accuracy of 0.01 % of reading
- Accuracy up to 0.006 % available on request
- Single precision piston-cylinder system
- Typical piston area of 15.6970 mm²
- Tungsten carbide piston
- Treated steel cylinder
- CH2-1250B generator base
- H15 oil as pressure medium
- Fluid density approximately 845 kg/m³
- Approx. 22 kg device weight without weights
- Stainless steel calibration weights
- Different pressure units available
- Standard or customer-specific local gravity
- Optional motorized weight rotation
- Optional piston position visualization
- Optional automatic pressure calculation
- Optional computer data transfer
- Adaptation for special fluids available
- Optional accredited calibration certificate
- Professional calibration and service from europascal
The combination of a low starting pressure of 0.5 bar and a maximum pressure of 150 bar provides a broad measuring range for professional hydraulic calibration.
Ideal for Demanding Calibration Applications
The europascal BH2-150B 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
- Hydraulic pressure gauges
- Process pressure instruments
- Secondary pressure standards
- Industrial pressure measuring equipment
Its pressure range makes the BH2-150B particularly versatile for calibration laboratories working with common industrial pressure ranges up to 100 bar and 150 bar.
The instrument can be used as a reliable reference standard in calibration laboratories as well as in industrial environments requiring excellent long-term stability.
Pressure Range from 0.5 to 150 bar
The europascal BH2-150B covers a measuring range from:
0.5 to 150 bar
This corresponds to:
50 to 15,000 kPa
or:
10 to 2,000 psi
The maximum pressure is therefore:
150 bar / 15 MPa
The ratio between minimum and maximum pressure is:
1:300
The complete range is covered using only one piston-cylinder assembly.
This provides an important practical advantage because a wide variety of pressure instruments can be calibrated without changing the piston.
Accuracy of 0.01 % of Reading
The europascal BH2-150B Hydraulic Deadweight Tester provides a standard accuracy of:
0.01 % of reading
For particularly demanding applications, an enhanced accuracy of:
up to 0.006 %
is available on request.
The specification relative to the actual reading provides excellent metrological performance across the measuring range.
The complete measurement uncertainty of a calibration additionally depends on relevant influence quantities such as:
- Calibration of the masses
- Effective piston-cylinder area
- Local gravitational acceleration
- Air buoyancy
- Piston-cylinder temperature
- Density of the pressure medium
- Pressure deformation
- Hydrostatic head difference
- Repeatability
- Resolution of the device under test
- Environmental conditions
These quantities should be considered when establishing the measurement uncertainty budget for high-accuracy pressure calibration.
Fundamental Piston Gauge Measurement Principle
The europascal BH2-150B operates according to the fundamental physical measurement 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 calibrated masses is primarily determined by:
F = m × g
where:
m = applied mass
g = gravitational acceleration
The simplified pressure relationship therefore becomes:
p = (m × g) / A
For precision measurements, additional corrections can be necessary for the calibrated piston area, temperature, pressure deformation, air buoyancy, local gravity and hydrostatic head.
This measurement principle provides excellent long-term stability and makes the BH2-150B a reliable physical reference for professional pressure metrology.
Precision Single-Piston Design
The europascal BH2-150B uses one precision piston-cylinder system across its complete measuring range from 0.5 to 150 bar.
The typical piston area is:
15.6970 mm²
The piston is manufactured from:
tungsten carbide
while the cylinder is manufactured from:
treated steel
Tungsten carbide provides excellent hardness, wear resistance and dimensional stability, making it particularly suitable for the precision piston of a high-quality pressure balance.
The manufacturer specifies a repeatability of:
3 × 10⁻⁵
and a sensitivity of:
1 × 10⁻⁵
for the BH2 piston-cylinder concept.
Hydraulic Operation with H15 Oil
The europascal BH2-150B is a hydraulic deadweight tester.
The specified pressure medium is:
H15 oil
with a density of approximately:
845 kg/m³
The hydraulic pressure generator displaces the oil and creates pressure within the measuring system. This pressure acts simultaneously on the piston-cylinder assembly and the connected device under test.
Hydraulic pressure generation provides excellent stability and is suitable for instruments compatible with mineral oil.
For high-accuracy calibration, the density of the oil should also be considered when correcting for a height difference between the reference level of the pressure balance and the reference level of the device under test.
CH2-1250B Pressure Generator
The europascal BH2-150B uses the:
CH2-1250B generator base
The generator allows the operator to generate and precisely regulate the hydraulic pressure required for the measurement.
The capstan is used to increase or decrease pressure until the piston reaches its appropriate operating position.
Fine pressure control is particularly important when establishing equilibrium between the hydraulic pressure and the force generated by the calibrated masses.
The CH2-1250B generator base, precision piston-cylinder assembly and calibrated mass set together form the complete physical pressure generation system.
Stainless Steel Weight Sets
The calibrated masses are an essential part of the BH2-150B measurement system.
The BH2 range uses:
stainless steel weights
The ergonomic shape of the masses facilitates handling and loading onto the weight carrier.
The weight set can be marked according to the required pressure unit.
Available units include:
bar
mbar
kPa
psi
and other available pressure units.
The exact mass configuration depends on the selected pressure unit and gravity value.
Standard Gravity and Local Gravity
The force produced by the calibrated masses depends directly on gravitational acceleration.
The conventional standard value is:
g = 9.80665 m/s²
However, actual gravitational acceleration varies according to geographical location.
The europascal BH2-150B can therefore be configured for:
standard gravity
or:
customer-specific local gravity
without requiring a different measurement principle.
Correct consideration of gravity is particularly important in high-accuracy pressure metrology because even small changes in gravitational acceleration directly influence the force generated by the masses.
Technical Highlights
Model: europascal BH2-150B
Device type: Hydraulic Deadweight Tester
Product family: BH2 High Performance
Configuration: Single piston
Number of pistons: 1
Measuring range: 0.5 to 150 bar
Measuring range: 50 to 15,000 kPa
Measuring range: 10 to 2,000 psi
Maximum pressure: 150 bar / 15 MPa
Accuracy: 0.01 % of reading
Enhanced accuracy: Up to 0.006 % on request
Measurement principle: Piston gauge
Pressure medium: H15 oil
Fluid density: Approx. 845 kg/m³
Generator base: CH2-1250B
Typical piston area: 15.6970 mm²
Piston material: Tungsten carbide
Cylinder material: Treated steel
Repeatability: 3 × 10⁻⁵
Sensitivity: 1 × 10⁻⁵
Device weight without weights: Approx. 22 kg
Standard gravity: 9.80665 m/s²
Operating temperature: 18 to 28 °C
Technical Data
| Feature | europascal BH2-150B |
|---|---|
| Manufacturer | europascal Aremeca |
| Model | BH2-150B |
| Device type | Hydraulic Deadweight Tester |
| Product family | BH2 High Performance |
| Configuration | Single piston |
| Number of pistons | 1 |
| Measuring range | 0.5–150 bar |
| Measuring range | 50–15,000 kPa |
| Measuring range | 10–2,000 psi |
| Maximum pressure | 150 bar / 15 MPa |
| Accuracy | 0.01 % of reading |
| Enhanced accuracy | Up to 0.006 % on request |
| Measurement principle | Piston gauge |
| Pressure medium | H15 oil |
| Fluid density | Approx. 845 kg/m³ |
| Generator base | CH2-1250B |
| Typical piston area | 15.6970 mm² |
| Piston material | Tungsten carbide |
| Cylinder material | Treated steel |
| Repeatability | 3 × 10⁻⁵ |
| Sensitivity | 1 × 10⁻⁵ |
| Device weight without masses | Approx. 22 kg |
| Operating temperature | 18–28 °C |
| Standard gravity | 9.80665 m/s² |
| Local gravity | Customer-specific value available |
| Motorization | Optional |
| Piston position visualization | Optional |
| Automatic pressure calculation | Optional |
| Data transfer | Optional |
Optional Motorization and Piston Position Visualization
The europascal BH2-150B can be equipped with option OP0004.
This option provides motorized rotation of the mass system and visualization of the piston position using indicator lights.
Rotation helps minimize disturbing friction effects between piston and cylinder and supports stable operation of the piston-cylinder assembly.
Piston position visualization provides additional operator assistance by indicating whether the piston is within its correct operating range.
With OP0004 installed, the weight of the instrument without the mass set is approximately 24 kg instead of 22 kg.
Optional Automatic Pressure Calculation
For laboratories requiring additional automation, the BH2-150B can be equipped with option OP0301.
The calculator module provides:
- Dynamic visualization of the piston position
- Automatic display of the generated pressure
- Consideration of temperature
- Consideration of atmospheric pressure
- Consideration of humidity
- Computer data transfer
- Improved measurement traceability
- Support for calibration certificate generation
This option combines the fundamental physical measurement principle of the piston gauge with modern digital calibration functionality.
It can significantly reduce manual calculations and simplify repetitive calibration procedures.
Adaptation for Special Fluids
In addition to the standard H15 oil configuration, the BH2-150B can be adapted for certain special or corrosive fluids.
The manufacturer specifically lists examples such as:
Skydrol
and:
brake fluid
This option can be particularly useful for specialized aerospace, automotive and industrial applications.
The exact compatibility of all wetted components with the required fluid should be specified when ordering.
BH2-150B Compared with BH2-30B and BH2-60B
The lower-pressure BH2 models use single-piston systems and provide different hydraulic measuring ranges:
| Model | Pistons | Measuring Range | Typical Piston Area |
|---|---|---|---|
| BH2-30B | 1 | 0.1–30 bar | 78.4825 mm² |
| BH2-60B | 1 | 0.2–60 bar | 39.2280 mm² |
| BH2-150B | 1 | 0.5–150 bar | 15.6970 mm² |
The BH2-150B provides the highest maximum pressure of these three models while retaining a low starting pressure of only 0.5 bar.
This makes it particularly suitable for laboratories requiring broad hydraulic pressure coverage up to 150 bar.
BH2 High Performance Series
The europascal Aremeca BH2 High Performance series provides hydraulic deadweight testers for a very broad range of calibration requirements.
The product family begins with models such as:
BH2-30B: 0.1 to 30 bar
BH2-60B: 0.2 to 60 bar
BH2-150B: 0.5 to 150 bar
For higher pressures, the BH2 series continues with models for 300 bar, 400 bar, 600 bar, 700 bar and 1,200 bar, including single-piston and selected dual-piston configurations.
Additional ultra-high-pressure models extend the BH2 concept to several thousand bar.
Further europascal Aremeca products can be found here.
Calibration Certificate and Service
The europascal BH2-150B is supplied with a factory calibration certificate traceable to national standards.
An optional COFRAC or DKD/DAkkS calibration certificate is available.
The manufacturer recommends calibration according to the intensity of use and provides service, overhaul and recalibration support for the instrument.
The europascal calibration service provides professional calibration solutions for deadweight testers, piston gauges, pressure gauges, pressure sensors, pressure transmitters and other pressure measuring equipment.
Regular calibration and appropriate maintenance help maintain the long-term metrological performance and traceability of this physical pressure standard.
Why Choose the europascal BH2-150B?
The europascal BH2-150B Precise Hydraulic Deadweight Tester combines a broad measuring range from 0.5 to 150 bar with an accuracy of 0.01 % of reading.
For particularly demanding applications, enhanced accuracy up to 0.006 % is available on request.
Its single-piston configuration covers the complete measuring range without requiring a piston change. The tungsten carbide piston, treated steel cylinder, typical piston area of 15.6970 mm² and CH2-1250B pressure generator provide a robust foundation for professional pressure calibration.
Optional motorization, piston position visualization and automatic pressure calculation enable the BH2-150B to be adapted to advanced calibration workflows.
Combined with professional advice, calibration and service from europascal, the BH2-150B provides an excellent physical pressure reference for professional calibration laboratories and industrial metrology.
Typical Calibration Applications with the europascal BH2-150B
The europascal BH2-150B is particularly suitable for calibrating precision pressure gauges, digital pressure gauges, reference pressure instruments, pressure sensors, pressure transmitters, pressure transducers, pressure switches and hydraulic process instruments.
Typical application areas include professional calibration laboratories, pressure instrument manufacturers, industrial quality assurance, mechanical engineering, plant engineering, research and development and other applications requiring reliable hydraulic reference pressures up to 150 bar.
Looking for the europascal BH2-150B or a precise hydraulic pressure calibration solution? Contact europascal for expert advice, product configuration and professional calibration services tailored to your requirements.
