Product Overview
The PRX-DWT Series Piston Pressure Gauge Calibrator (Dead Weight Tester) is a high-accuracy primary pressure standard designed for precise pressure calibration applications. Pressure is generated by applying calibrated weights to a precision piston-cylinder assembly, providing stable, repeatable, and traceable pressure values.
This series is ideal for metrology laboratories, calibration laboratories, industrial facilities, and quality control departments where accurate reference pressure is essential.
Applications
- Calibration of precision pressure gauges
- Calibration of digital pressure gauges and meters
- Calibration of pressure transmitters
- Calibration of pressure sensors
- Reference pressure source for calibrating other pressure systems
- Laboratory and industrial metrology applications
Model Selection & Measurement Range
| PRX Model No. | Measuring Range |
| PRX-DWT-6 | 0.04 – 0.6 MPa |
| PRX-DWT-60 | 0.1 – 6 MPa |
| PRX-DWT-250 | 1 – 25 MPa |
| PRX-DWT-600 | 1 – 60 MPa |
| PRX-DWT-1000 | 2 – 100 MPa |
Accuracy Class
±0.05%
±0.02%
Performance Features
- Complies with JJG 59-2007 – Piston Pressure Gauges
- Complies with JJG 99-2006 – Standard Weights
- Precision-machined piston and cylinder assembly
- Excellent pressure stability and repeatability
- Smooth pressure generation with fine adjustment control
- High-quality calibrated weight set
- Stainless steel construction for durability and corrosion resistance
- Suitable for laboratory and industrial calibration environments
Key Advantages
- Primary pressure standard (no external reference required)
- High accuracy and long-term measurement stability
- Wide pressure range up to 100 MPa
- Ideal for professional calibration and metrology use
- Reliable reference for critical pressure measurements
Typical Industries
- Calibration & Metrology Laboratories
- Oil & Gas
- Power Generation
- Pharmaceutical Manufacturing
- Chemical & Process Industries
- Instrumentation & Automation



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