The Fluke Ruska 7250xi Pressure Controller/Calibrator delivers precision pressure measurement and control across demanding metrology, research, and manufacturing applications. Built on fused-quartz Bourdon tube sensor technology, it achieves 0.005% of reading accuracy from 5% to 100% of range, with annual stability of 0.0075% of reading. The instrument reaches setpoint in 20 seconds without overshoot across ranges from 0–3,000 psi (0–21 MPa), making it ideal for traceable calibration work.
## Technical Specifications
**Pressure Ranges and Accuracy**
• Full-scale ranges: 20–2,500 psig (138 kPa–17.2 MPa)
• Absolute ranges: 15–50 psia (100–350 kPa)
• Flexible configurations: 0–5 psi to 0–3,000 psi (0–35 kPa to 0–21 MPa); 0–400 mbar to 0–210 bar
• Measurement precision: 0.005% of reading from 5% to 100% of range
• Below 5% of range: 0.005% of the lower threshold value
• Annual stability: 0.0075% of reading
• Control stability: 10 ppm; achievable to 0.001% of full scale
• Setpoint response: 20 seconds or less into 15 cubic inch (245 cc) volumes, no overshoot
**Sensor and Control Technology**
• Force-balanced, fused-quartz sensor for repeatable measurement
• Active Mode: Maintains setpoint; compensates for small leaks and temperature drift
• Passive Mode: User-defined control band; controller disables at setpoint for zero added uncertainty in stable, leak-free systems
• Step up/down calibration with user-configurable jog dial increments
**User Interface**
• 6.4-inch (162.5 mm) TFT active matrix color display, 640 × 480 resolution, 65,000 colors
• Numeric keypad, function keys, rotary knob navigation
• Seven languages: English, French, Chinese, German, Japanese, Spanish, Italian
## Key Features
• Quartz sensor technology ensures long-term accuracy and minimal drift
• Two selectable control modes optimize performance for different test scenarios
• Rapid setpoint achievement minimizes calibration cycle time
• Nitrogen or clean dry air compatible
## Typical Applications
• Pressure transducer and instrument calibration in metrology labs
• Research facility pressure standards and control
• Manufacturing process pressure validation and equipment calibration
## Compatibility & Integration
• RS232 and IEEE-488 connectivity with SCPI command syntax
