Fluke Calibration RUSKA 7050 is a precise digital pressure indicator for high-accuracy pneumatic pressure measurement in calibration laboratories, production environments and professional test systems. The instrument combines proven RUSKA quartz pressure sensor technology with excellent long-term stability, flexible pressure ranges and comprehensive communication capabilities.
The RUSKA 7050 is designed specifically for applications that require pressure measurement without integrated pressure generation or automatic pressure control. This makes it an ideal reference pressure monitor for use with an external pressure source such as a manual pressure generator, pneumatic pressure comparator or automatic pressure controller. Fluke explicitly classifies the RUSKA 7050 as a pressure monitor that measures pressure only and requires an external pressure source when pressure generation or control is needed. Fluke
The standard RUSKA 7050 provides a precision of 0.003% of full scale, with selectable full-scale ranges from 5 psi to 1,500 psi, corresponding to approximately 400 mbar to 100 bar. Permanent absolute-pressure ranges from 15 to 50 psia are also available. Fluke
A major advantage of the Fluke Calibration RUSKA 7050 is the quartz pressure sensing technology used throughout the 7050 family. This technology provides very high measurement stability and contributes to the specified long-term stability of 0.0075% of reading per year. Fluke
For professional traceability, pressure indicators such as the RUSKA 7050 can be calibrated through the europascal Calibration Service. europascal operates a DAkkS-accredited pressure calibration laboratory and calibrates digital pressure gauges, pressure controllers, sensors and other high-precision pressure instruments. europascal.de
Your Benefits at a Glance
The Fluke Calibration RUSKA 7050 combines high precision with flexible configuration options for professional pneumatic pressure measurement.
Key benefits include:
- Precision of 0.003% of full scale
- Pressure ranges from 5 psi to 1,500 psi
- Metric ranges from approximately 400 mbar to 100 bar
- Excellent long-term stability of 0.0075% of reading per year
- Proven RUSKA quartz pressure sensor technology
- Display resolution selectable up to 1:1,000,000
- Gauge-pressure measurement
- Optional absolute-pressure measurement
- Optional negative gauge mode
- Optional barometric reference
- Optional vacuum reference
- Permanent absolute-pressure versions available
- Automatic zeroing
- Configurable upper and lower pressure limits
- Automatic head-pressure correction
- More than twelve standard pressure units
- Two user-defined units
- RS232 interface
- IEEE-488 / GPIB interface
- SCPI command syntax
- Compatibility with legacy RUSKA command sets
- Optional MET/CAL driver
- COMPASS compatibility
- Large 6.4-inch TFT display
- 640 × 480 pixel VGA resolution
- 19-inch rack integration possible
- Suitable for calibration laboratories
- Suitable for automated pressure test systems
- Suitable for production and quality assurance
High-Accuracy Pressure Measurement
The core function of the Fluke Calibration RUSKA 7050 is highly accurate pneumatic pressure measurement.
For the standard 7050, Fluke specifies a precision of:
0.003% FS
where FS means full scale. Fluke
This specification includes the combined influence of linearity, repeatability and hysteresis over the operating temperature range. Fluke also states that the expression of total uncertainty follows the principles of the ISO Guide to the Expression of Uncertainty in Measurement. Fluke
The 7050 is therefore particularly suitable for applications where a high-quality reference pressure measurement is required without the additional complexity of an integrated pressure controller.
Pressure Ranges up to 100 bar
The Fluke Calibration RUSKA 7050 can be configured with a suitable full-scale pressure range according to the application.
For the standard 7050, Fluke specifies full-scale gauge-pressure ranges from:
5 psi to 1,500 psi
or approximately:
400 mbar to 100 bar. Fluke
This broad range selection allows the pressure indicator to be matched closely to the actual workload.
Choosing a suitable full-scale range is especially important when the precision specification is expressed as a percentage of full scale.
Quartz Pressure Sensor Technology
RUSKA pressure instruments are known for their quartz pressure sensing technology.
Fluke states that the 7050, 7050i and 7050LP use quartz sensors designed to provide precision and long-term stability for pressure calibration applications. Fluke
Quartz sensing is especially valuable in a reference pressure monitor because stable sensor characteristics reduce drift over time.
The result is a digital pressure indicator suitable for repeated reference measurements in demanding laboratory environments.
Excellent Long-Term Stability
The long-term stability of the Fluke Calibration RUSKA 7050 is specified as:
0.0075% of reading per year. Fluke
Long-term stability is a particularly important characteristic for reference instruments.
Even an instrument with excellent short-term precision can become unsuitable for demanding calibration work if its characteristics change significantly between calibration intervals.
The RUSKA 7050 combines high precision with excellent stability, making it suitable for use as a laboratory pressure reference.
Total Uncertainty Specifications
In addition to precision, Fluke specifies total uncertainty values for the RUSKA 7050.
For ranges up to 1,500 psi / 100 bar, the published RSS specifications include:
90 days: 0.003% FS + 0.002% of reading
1 year: 0.003% FS + 0.0075% of reading. Fluke
Fluke defines total uncertainty as the maximum deviation from the true pressure value including precision, stability, temperature effects and the calibration standard.
This provides a more complete description of instrument performance than the precision value alone.
Gauge Pressure Measurement
The standard Fluke Calibration RUSKA 7050 can be configured for gauge-pressure measurement.
In gauge mode, the reference pressure is atmospheric pressure.
The wide selection of ranges from approximately 400 mbar to 100 bar makes the 7050 suitable for many pneumatic calibration applications, including comparison calibration of pressure gauges, transmitters, sensors and pressure calibrators.
Absolute Pressure Options
The RUSKA 7050 can also be configured for absolute-pressure measurement.
Fluke provides several methods.
A barometric reference option can be used on ranges from 15 psi / 1 bar and higher.
Alternatively, a vacuum reference option can be used with an external vacuum pump connected to the reference port. The integrated vacuum sensor monitors the reference vacuum and supports automatic zeroing in absolute mode. Fluke
Permanent absolute-pressure models are also available for ranges from:
15 to 50 psia
or approximately:
1 to 4 bara. Fluke
This provides significant flexibility when both gauge and absolute pressure workloads must be covered.
Optional Negative Gauge Measurement
For applications below atmospheric pressure, the RUSKA 7050 offers an optional:
negative gauge mode.
This enables bidirectional gauge-pressure measurements when the corresponding option is installed. Fluke
For the standard 7050, Fluke specifies the negative-gauge precision as:
0.003% FS. Fluke
This option increases the usefulness of the 7050 in applications involving both positive gauge pressure and vacuum relative to atmospheric pressure.
Automatic Zeroing
All Series 7050 models feature automatic zeroing.
The zero function can be initiated through the front panel or via the instrument’s communication interfaces. Automatic zeroing is also supported for instruments fitted with the vacuum-reference option for absolute-pressure operation. Fluke
Automatic zeroing simplifies recurring measurement procedures and is particularly useful in automated calibration setups.
High Display Resolution
The Fluke Calibration RUSKA 7050 offers user-selectable display resolution up to:
1:1,000,000. Fluke
This allows the displayed number of pressure digits to be adapted to the measurement range and the application.
High display resolution is particularly useful when observing small pressure changes during calibration, stability tests or comparison measurements.
Resolution should, however, not be confused with measurement accuracy.
More Than Twelve Pressure Units
The Series 7050 supports more than twelve standard pressure units.
These include commonly used units such as:
- bar
- psi
- kPa
- kg/cm²
- mmHg
- cmHg
- inHg
- inH₂O
- cmH₂O
Different reference temperatures are supported for several liquid-column units.
In addition, the instrument provides two user-defined units. Fluke
This makes the RUSKA 7050 convenient for international laboratories and applications involving different pressure unit conventions.
Automatic Head-Pressure Correction
The 7050 provides automatic correction for pressure-head differences.
A pressure difference can occur if the reference level of the instrument and the measurement point are located at different heights.
The integrated head-pressure correction helps account for this effect within the measurement setup. Fluke
This feature is particularly useful in precision calibration systems where even comparatively small hydrostatic pressure differences can be significant.
Configurable Pressure Limits
Upper and lower pressure limits can be configured in the Fluke Calibration RUSKA 7050.
When a limit is exceeded, the instrument can produce an audible warning. Fluke
Pressure limits provide an additional safeguard when working with sensitive devices under test or when defined test ranges must not be exceeded.
RS232 and IEEE-488 Interfaces
For automated calibration systems, the RUSKA 7050 provides:
RS232
and:
IEEE-488 / GPIB
interfaces as standard. Fluke
The instrument uses SCPI command syntax, simplifying integration into automated test and calibration software.
Fluke also provides compatibility with command sets from earlier RUSKA instruments, helping laboratories replace older systems without completely rewriting existing automation software. Fluke
Automated Pressure Calibration
The communication capabilities make the Fluke Calibration RUSKA 7050 particularly suitable for automated calibration systems.
Fluke currently lists the 7050 among instruments supported by COMPASS for Pressure, its software platform for automated pressure calibration and testing. Fluke
A MET/CAL driver is also available as an option. Fluke
This makes the RUSKA 7050 suitable for use in laboratories where calibration sequences, measurement acquisition and documentation are controlled by software.
Pressure Measurement Only
An important distinction must be made between the Fluke Calibration RUSKA 7050 and RUSKA pressure controllers such as the 7250.
The RUSKA 7050 is a:
pressure indicator / pressure monitor.
It measures pressure but does not independently generate or automatically control pressure. Fluke
A typical calibration setup therefore consists of:
External pressure source → RUSKA 7050 → Device Under Test
The 7050 acts as the reference pressure measuring instrument.
For pressure generation and adjustment, it can be combined with suitable manual or automatic pressure equipment.
Suitable Pressure Sources
Fluke lists several compatible pressure adjustment systems for the RUSKA 7050 family.
These include manual pressure control packages and precise pressure adjustment assemblies. Fluke
The appropriate pressure source depends on:
- Required maximum pressure
- Required minimum pressure
- Gauge or absolute operation
- Number of calibration points
- Required automation level
- Device under test
- Target measurement uncertainty
This modular concept allows the pressure measurement reference and the pressure generation system to be selected independently.
Pressure Medium
For the RUSKA 7050, Fluke specifies:
nitrogen or clean, dry air
as the pressure medium. Fluke
The instrument is therefore designed for pneumatic pressure measurement.
Process fluids or contaminated gases should not be connected directly unless a suitable separation or protection system has been selected.
Fluke lists a liquid trap assembly as an available accessory for the Series 7050. Fluke
Large TFT Display
The RUSKA 7050 uses a:
6.4-inch TFT active-matrix display.
The display provides:
640 × 480 pixel VGA resolution
and approximately:
65,000 colors. Fluke
The large display supports straightforward operation and provides space for measurement values, configuration information and menus.
Multilingual User Interface
The Series 7050 can display menus and functions in several languages.
Fluke lists:
- English
- French
- Chinese
- German
- Japanese
- Spanish
- Italian Fluke
This makes the instrument suitable for international laboratory environments and global organizations.
Laboratory Design
The Fluke Calibration RUSKA 7050 is designed primarily as a precision laboratory instrument.
Dimensions are approximately:
178 × 419 × 483 mm
and weight is approximately:
7.5 kg. Fluke
Optional rack-mount kits allow the pressure indicator to be installed in 19-inch EIA cabinets, making it suitable for permanent calibration benches and automated test systems. Fluke
Power Supply and Warm-Up
The RUSKA 7050 operates from:
90 to 260 VAC, 50/60 Hz
with a maximum specified power consumption of:
150 W. Fluke
Fluke specifies a warm-up time of approximately:
2 to 3 hours.
The instrument may also be left switched on continuously. Fluke
For high-precision reference measurements, sufficient warm-up and stable environmental conditions are important.
Operating Conditions
The specified operating temperature range is:
18 °C to 36 °C.
Storage temperature is:
-20 °C to 70 °C.
Relative humidity may range from:
5% to 95% RH, non-condensing. Fluke
These specifications reflect the intended use of the 7050 as a high-precision laboratory pressure instrument.
Technical Highlights
| Feature | Fluke Calibration RUSKA 7050 |
|---|---|
| Device type | Digital Pressure Indicator |
| Measurement principle | Quartz pressure sensor |
| Standard gauge ranges | 5 to 1,500 psi |
| Metric range | Approx. 400 mbar to 100 bar |
| Precision | 0.003% FS |
| Long-term stability | 0.0075% of reading/year |
| Display resolution | Up to 1:1,000,000 |
| Permanent absolute ranges | 15 to 50 psia / 1 to 4 bara |
| Barometric reference | Optional |
| Vacuum reference | Optional |
| Negative gauge | Optional |
| Automatic zeroing | Yes |
| Pressure limits | Upper and lower, configurable |
| Pressure units | More than 12 + 2 user-defined |
| Head correction | Automatic |
| Interfaces | RS232 and IEEE-488 |
| Protocol | SCPI |
| MET/CAL driver | Optional |
| COMPASS support | Yes |
| Display | 6.4-inch TFT VGA |
| Display resolution | 640 × 480 pixels |
| Test/reference ports | 1/4 in NPT female |
| Pressure medium | Nitrogen or clean dry air |
| Operating temperature | 18 °C to 36 °C |
| Dimensions | 178 × 419 × 483 mm |
| Weight | Approx. 7.5 kg |
| Power | 90–260 VAC, 50/60 Hz |
| Warm-up | 2–3 hours |
These specifications are based on the current official Fluke documentation for the RUSKA 7050 Series. Fluke
Typical Applications
The Fluke Calibration RUSKA 7050 is particularly suitable for:
- High-accuracy pressure measurement
- Reference pressure measurement
- Pneumatic pressure calibration
- Digital pressure gauge calibration
- Pressure sensor calibration
- Pressure transmitter calibration
- Pressure controller verification
- Comparison calibration
- Gauge-pressure measurement
- Absolute-pressure measurement
- Negative gauge measurement
- Calibration laboratory reference systems
- Automated pressure calibration
- Production testing
- Quality assurance
- Research and development
- Pressure metrology
Calibration by europascal
A reference pressure indicator such as the Fluke Calibration RUSKA 7050 should be calibrated regularly to maintain reliable metrological traceability.
europascal provides DAkkS-accredited pressure calibration for absolute and gauge pressure. According to the current europascal calibration overview, pneumatic pressure calibration is available from 1 Pa up to 1,000 bar, with additional hydraulic capabilities extending to 10,000 bar. europascal.de
The europascal Calibration Service covers pressure controllers, pressure sensors, pressure gauges, digital pressure gauges and other professional pressure instruments.
europascal is also an authorized Fluke Calibration service center for pressure and flow products in the EMEA region. europascal.de
Why Choose the Fluke Calibration RUSKA 7050?
The Fluke Calibration RUSKA 7050 is designed for users who require high-accuracy pneumatic pressure measurement without integrated pressure generation.
Its 0.003% FS precision, pressure ranges up to 100 bar and long-term stability of 0.0075% of reading per year make it a powerful reference instrument for calibration laboratories and precision test systems. Fluke
Quartz pressure sensing technology supports excellent stability, while selectable display resolution up to 1:1,000,000 makes small changes in pressure easy to observe.
Gauge, absolute and negative gauge configurations provide flexibility for a wide variety of pressure measurement applications. Optional barometric and vacuum references extend absolute-pressure capability, while automatic zeroing and pressure-head correction simplify precision measurements.
RS232 and IEEE-488 interfaces, SCPI command syntax, COMPASS support and optional MET/CAL integration make the RUSKA 7050 equally suitable for manual laboratory work and automated calibration systems.
For laboratories that need a stable, precise and configurable reference pressure monitor, the Fluke Calibration RUSKA 7050 provides a proven solution within the RUSKA pressure calibration portfolio.
Further products from Fluke Calibration can be found here. europascal.de
