Performance Features
1. High Accuracy and Stability: Accuracy class up to 0.005, measurement uncertainty better than
±0.005%. Ceramic piston rod and tungsten carbide piston cylinder
ensure wear resistance, corrosion resistance, low thermal expansion
coefficient, and exceptional long-term stability.
2. Multifunctionality and Flexibility: Supports absolute pressure, gauge pressure, and vacuum pressure
measurement modes for versatile applications. Equipped with
multiple piston systems covering a wide range from 5 kPa to 6 MPa,
eliminating frequent equipment changes.
3. Intelligence and Convenience: Integrated electric control for piston rotation eliminates manual
intervention inside the vacuum chamber. Features a digital display
module for real-time monitoring of pressure, temperature,
rotational speed, and other parameters.
4. Environmental Adaptability: Utilizes gas media (nitrogen/clean air) to eliminate liquid
viscosity effects and enhance sensitivity; incorporates a
multi-stage filtration system to effectively prevent dust
contamination of the piston system.
5. Optimized Structural Design: Features a lightweight base for easy transport; employs quick-seal
connectors and a vacuum chamber design to significantly reduce
leakage risks.
Typical Applications
Verification or calibration of absolute pressure digital pressure
gauges, absolute pressure precision pressure gauges, pressure
transmitters, pressure sensors, and other instruments.
Serves as a reference device for pressure value transfer,
supporting national metrology institutions, third-party testing
laboratories, and high-end manufacturing sectors.
Suitable for demanding absolute pressure measurement scenarios in
aerospace, meteorology, scientific research, and other fields.
Technical Specifications
1. Product Model: FKQ-200A / FKQ-400A
2. Measurement Range: 5 kPa to 200 kPa (FKQ-200A)
6 kPa to 400 kPa (FKQ-400A)
3. Accuracy Class: Class 0.005, Class 0.01, Class 0.02, Class 0.05
4. Working Medium: High-purity nitrogen or clean air
5. Piston Materials:
Piston Rod: Ceramic
Piston Cylinder: Tungsten carbide
6. Weight Configuration: Non-magnetic stainless steel, supports
gravity acceleration correction (adjustable per location)
7. Environmental Requirements:
Temperature: 20±2°C
Humidity: 40% to 80%
Power Supply: AC 220V
8. Vacuum Level: Below 10 Pa achievable within vacuum chamber
9. Output Interface: M20×1.5 standard quick-connect fitting
10. Compliance Standard: JJG 1086-2013 “Verification Regulations
for Gas Piston Pressure Gauges”
