The XYGK-1000T Piston Pressure Gauge is newly developed and manufactured by our company in accordance with the latest national verification regulations for "Piston Pressure Gauges" and the requirements of JJG59-2007. The 2-100MPa range piston pressure gauge is a high-precision, highly reproducible, and highly reliable standard pressure measuring instrument based on Pascal's law and hydrostatic equilibrium principles. Piston pressure gauges are often simply referred to as pressure gauges or pressure balances. They are primarily used in metrology rooms, laboratories, and production or scientific experiments as reference pressure instruments. They can also be directly used in high-reliability monitoring applications for voting monitoring of other local instruments.

Performance Characteristics

1. Both the piston and piston cylinder are made of high-strength, high-hardness, low thermal expansion coefficient tungsten carbide material through meticulous grinding. The small thermal expansion coefficient and minimal deformation ensure a low periodic change rate of the piston's effective area, wide operating temperature range, and stable performance.

2. Due to the adoption of new materials, new technologies, and new processes, the technical indicators of the new piston pressure gauge have been greatly improved. It is widely used to calibrate digital pressure gauges, precision pressure gauges, pressure transmitters, pressure sensors, and other pressure instruments.

3. Low center of gravity of the load. The weights are directly applied to the piston through the weight frame, ensuring smooth piston operation, minimal pressure fluctuation, and accurate readings.

4. For pressures above 25MPa, the pressure transmission medium uses diisooctyl sebacate with very low viscosity, ensuring extremely high sensitivity of the pressure gauge.

5. All weights used in the pressure gauge are made of non-magnetic stainless steel material. (Class 0.05 weights are made of carbon steel.)

6. The piston's working position is monitored by a displacement sensor. The piston's up and down travel is ±1.5mm. The instrument display is sensitive, clear, and accurate.

7. Wide range. At the lower limit of 1MPa, the basic error is ±0.01%, ±0.02%, ±0.05%, and ±0.05%.

8. Functions: Calibration of piston pressure gauges, verification of digital pressure gauges, precision pressure gauges, pressure transmitters, etc.

9. Piston material: Tungsten carbide

10. Weight material: Stainless steel; carbon steel

11. Working medium: Below 25MPa, transformer oil or a mixture of transformer oil and kerosene; above 25MPa, diisooctyl sebacate.

Main Technical Parameters

Measurement range and accuracy grade are tested under environmental conditions of (20±5)°C, relative humidity ≤80%, atmospheric pressure 86-106KPa, and temperature fluctuation not exceeding 0.5°C. The accuracy grades are shown in the table.

Note: High-pressure piston pressure gauges above 100MPa can be customized. Welcome to call for inquiries.

Daily Maintenance and Repair Tips

1. Keep the pressure gauge clean. Do not place the pressure gauge in excessively high temperatures to avoid corrosion.

2. The quick connectors and O-rings at the lower end of the piston are prone to damage. If leakage is found, replace them.

3. The liquid level in the oil cup should always be above the upper end of the oil cup filter. If neglected, air may enter the pre-pressure pump, causing it to fail. In this case, loosen the oil inlet joint of the pre-pressure pump to allow air to escape with the liquid. When the liquid flows out continuously, tighten the joint to restore the pre-pressure pump function.