1. Basic principles
The definition of pressure is the ratio of the force on a certain area to the area. The core component is a highly accurate piston system component. The pressure required for measurement is generated by loading a weight on the component. The piston cylinder and piston rod are both made of tungsten carbide. This material has extremely low compression deformation and thermal expansion coefficient, ensuring that the cross-section of the piston has good linearity, making the instrument very accurate.
The instrument measures pressure directly by definition (P=F/S), and the piston system is made of high-quality tungsten carbide material, so that the instrument has minimal measurement uncertainty and long-term stability with a validity period of more than 5 years.
2. Piston pressure gauge usage environment and selection parameters
1. Usage environment:
Ambient temperature: (20±1)℃
Relative humidity: constant temperature room below 85%
There should be no mechanical vibration that affects metering performance during use.
2. Selection parameters of piston pressure gauge
NYQ-6F type piston pressure gauge
| Model number | NYQ-6F | Measuring range | (0.1~0.6)MPa | Piston core material | |
| Accuracy class | 0.05/0.02/0.01/0.005 | Platform size (length * width * height)mm | 680*480*310 | Piston rod | Piston cylinder |
| Total weight (Kg) | 30 | Platform body material | High quality steel material | Tungsten carbide | Tungsten carbide |
| Working medium | Pure nitrogen or dry air | ||||
Weight configuration table
| Specification (MPa) | Quantity (block) | Dimension diameterφ (mm) | Weight (Kg/ block) | material |
| 0.1 | 5 | 280 | 5 | Stainless steel |
| 0.02 | 3 | 140 | 1 | Stainless steel |
| 0.01 | 2 | 100 | 0.5 | Stainless steel |
| 0.005 | 2 | 72 | 0.25 | Stainless steel |
| -0.02 | 4 | 138 | 1 | Stainless steel |
| -0.01 | 1 | 95 | 0.5 | Stainless steel |
| -0.005 | 2 | 72 | 0.25 | Stainless steel |
3. Functional characteristics of gas piston pressure gauge
1. The gas piston pressure gauge uses dry pure air or pure nitrogen as the gas source, and the equipment being inspected is not contaminated. It is mainly aimed at clean laboratories, medical industry products and products with higher pollution protection levels, etc., with higher safety requirements. Place design is simpler and safer.
2. The product adopts an integrated structure of positive and negative pressure. You can easily switch between positive and negative pressure by simply switching the reversing valve, which improves usage efficiency and saves costs.
3. The display part is upgraded, using a touch LCD display system, adding functions such as temperature, humidity, pressure (convertible MPa, kPa, psi, bar) display.
4. The performance of the pressure regulating system is better than that of the oil pressure regulating system. The pressurization process is easy, and it is not easy to leak pressure and requires no maintenance.
5. The piston system bracket adopts a new one-piece design, which makes the sealing and stability more reliable.
6. The newly developed gas reversing valve effectively solves the problems of the previous reversing valve. The positive and negative pressure gas switching is smoother and the sealing is higher.
7. The product upgrade adds an air intake flow control valve to control the intake air flow more carefully and accurately to avoid inevitable damage to the piston system and the instrument being inspected due to excessive air intake.
8. The product body is equipped with a safety valve. If the air intake is too large due to operating errors during use, the safety valve will automatically exhaust to protect the piston system from damage.
9. The product is equipped with a fine-tuning valve. When the pressure value is too high or lower than the standard pressure value during the pressurization process, you can use the fine-tuning valve to operate it easily and quickly.
4. Relevant qualifications and certificates
1.GB/T19001-2016/ISO 9001:2015 quality management system certification,
2.ZL 2018 3 0657812.2 "Piston Pressure Detection Device" Appearance Design Patent Certificate
3.ZL 2018 2 1937109.8 "Pressure Gauge Piston Assembly and Piston Pressure Gauge" Utility Model Patent Certificate
4.ZL 2018 2 1956666.4 "Piston Pressure Gauge" Utility Model Patent Certificate
5.ZL 2019 3 0474354.3 "Left Display Piston Pressure Gauge" Appearance Design Patent Certificate
6.ZL 201 3 0376500.9 "High Pressure Piston Pressure Gauge" Appearance Design Patent Certificate
7.ZL 2019 2 0660375.9 "Fluid Pressure Gauge Piston Assembly and Piston Pressure Gauge" Utility Model Patent Certificate
8.ZL 2020 2 0812879.0 "Gas Piston Pressure Gauge Piston System Component Bracket" Utility Model Patent Certificate