Product Introduction

Rooted in the principle of hydrostatic equilibrium, the Piston Pressure Gauge translates precise mass (via weights) into accurate pressure values, ensuring traceable and reliable calibration results. Its core components-including the piston and cylinder-are crafted with advanced materials and precision manufacturing techniques to eliminate measurement uncertainties.

Designed as a primary standard instrument, it addresses the critical need for standardized pressure verification in fields where even minimal errors can compromise safety, product quality, or experimental validity. From calibrating industrial pressure transmitters in petrochemical plants to verifying lab-grade sensors in research institutions, this gauge provides the foundational accuracy required for trustworthy pressure measurements. It fully complies with international metrology protocols, including the principles outlined in JJG59-2007, making it a globally recognized tool for pressure calibration tracing the source.

Core Features

Exceptional Material Engineering: The piston and cylinder are constructed from tungsten carbide, a material renowned for its ultra-high strength, hardness, and minimal thermal expansion coefficient. This eliminates pressure-induced deformation errors-even under extreme conditions-and ensures stable performance within a wide temperature range of 20±5℃.

Simplified Operation: Thanks to tungsten carbide's negligible deformation rate, weights of the same nominal value are identical and require no deformation corrections. Operators can add weights freely without strict sequencing, significantly reducing workflow complexity and human error.

Ultra-High Sensitivity: Precision grinding of the piston-cylinder assembly minimizes roundness, straightness, and radial clearance errors. Paired with di(2-ethylhexyl) sebacate-an internationally specified pressure transmission medium with 20-25 mm²/s viscosity-it achieves exceptional sensitivity for detecting minute pressure variations.

Precise Position Monitoring: A built-in displacement sensor tracks the piston's working position with real-time, clear, and accurate feedback, ensuring optimal equilibrium during calibration and eliminating guesswork.

Broad Accuracy Range: Available in accuracy classes from 0.005% to 0.05%, it delivers maximum allowable errors within ±0.02% to ±0.05% of the measured pressure, covering nominal ranges from 0.04 MPa to 60 MPa (customizable for higher ranges up to 1400 MPa for specialized industrial needs).

Key Applications

The Piston Pressure Gauge serves as a critical tool across diverse sectors where precision pressure calibration is non-negotiable:

Metrology & Calibration Labs

Acts as the primary standard for calibrating secondary pressure instruments, ensuring traceability to national and international pressure standards.

Industrial Manufacturing

Used in oil & gas, chemical, and automotive industries to calibrate pressure transmitters, gauges, and sensors that monitor process pressure and ensure operational safety.

Aerospace & Defense

Validates high-precision pressure sensors for aircraft hydraulic systems, rocket propulsion units, and satellite components, where pressure accuracy directly impacts mission success.

Research Institutions

Supports material science and fluid dynamics research by providing accurate pressure references for experimental setups.

Power Generation

Calibrates pressure instruments in thermal power plants and nuclear facilities to maintain system efficiency and prevent catastrophic failures.

FAQ

Q1: What makes tungsten carbide the ideal material for the piston system?

A1: Tungsten carbide's unique combination of high strength, hardness, and low thermal expansion ensures minimal deformation under pressure and temperature fluctuations. This eliminates the need for weight corrections and extends the instrument's service life-critical for maintaining long-term calibration accuracy.

Q2: Can the gauge operate in harsh industrial environments?

A2: Yes. Its wide operating temperature range (20±5℃) and robust construction allow stable performance in factory floors and field calibration settings. For ultra-high-pressure applications (up to 1400 MPa), specialized models feature reinforced piston protection systems and aerospace-grade seals to ensure safety and reliability.

Q3: How often does the instrument require calibration?

A3: In line with international metrology standards, we recommend initial calibration after installation, followed by annual recalibration. For instruments used in high-frequency or critical applications, semi-annual calibration is advised to maintain accuracy.

Q4: Is the gauge compatible with different pressure instruments?

A4: Absolutely. It comes with dual M20×1.5 quick-connect interfaces, enabling simultaneous calibration of two instruments (e.g., pressure gauges and sensors). Custom interface adapters are available for specialized equipment.

Q5: Do I need specialized training to operate the gauge?

A5: No. The weight system's user-friendly design (no sequential loading required) and intuitive displacement sensor feedback simplify operation. We provide a comprehensive user manual and online training resources to ensure proficiency.

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