Gas Piston Pressure Gauges are high-precision pressure standards, utilizing gas as the working medium and capable of measuring transmission.Piston Pressure GaugePressure gauges and calibrations for gauge pressure, absolute pressure, and negative pressure (vacuum). The piston rod of the piston gauge is made of tungsten carbide, as is the piston cylinder, ensuring the piston is wear-resistant and has a long service life.

Key Technical Parameters

Model and Measurement Range:

 QY-6:（0.04-0.6）MPa;

 QY-25（0.1-2.5）MPa;

 QY-60（0.1-6）MPa;

 QY-70（0.1-7）MPa;

 QY-100（0.1-10）MPa；

2. Working Medium:

Nitrogen or pure air;

3. Accuracy Grade:

0.005, 0.01, 0.02, 0.05 grades

4. Pressure Testing Method:

Gauge Pressure

5. Dimensions:

Length * Width * Height (350 x 360 x 450mm)

6. Piston rod:

Tungsten Carbide Piston Cylinder: Tungsten Carbide

7. Weighing Material:

Magnetic-Free Stainless Steel (0.005 Grade; 0.01 Grade; 0.02 Grade; 0.05 Grade)

8. Features:

● Pistons and cylinder sleeves are precision ground, resulting in minimal roundness error and clearance. This enhances the piston's rotation duration and correspondingly reduces friction, improving the piston's discrimination ability.

● The two joints of the inspected tables are equipped with two shut-off valves, which can timely close the pressure between the inspected systems. As the piston pressure gauge needs to reduce pressure to lower the piston when adding or removing weights, and if the pressure gauges, transmitters, sensors, etc., between the inspected systems cannot be shut off, the pressure in the gauge will rise and fall with the piston's movement, making it impossible to measure the return error of the inspected gauge. A specifically designed pressure conversion valve, when closed, can operate independently without weights, so the piston pressure gauge stand can be used as a pressure pump or source independently.

●Weights have been corrected for local gravitational acceleration.

● Optional digital display function: Digital display of parameters such as temperature, displacement, time, speed, and pressure.

● Measurement Range: Nominal measurement range is consistent with the actual measurement range.

The piston system can be easily removed for inspection (without having to carry the heavy main unit).

● Suitable for piston-type pressure gauge calibration; also for high-precision testing. Compatible with kg and MPa weights.

●We use a suspended basket structure for the weights, ensuring a low center of gravity and good stability.

● Simultaneously inspect two gauges, using quick-pressure connectors, with no air leakage observed.