1. Basic principles
Pressure is defined as the ratio of force on a certain area to that area. The core component is a highly accurate piston system component, which generates the pressure required for measurement by loading weights on the component. The piston cylinder and piston rod are made of tungsten carbide, which has extremely low compression deformation and thermal expansion coefficient, ensuring that the cross-section of the piston has good linearity, making this 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, which makes the instrument have extremely small measurement uncertainty and long-term stability with a validity period of more than 5 years.
2. Piston pressure gauge use environment and selection parameters
1. Use environment:
Ambient temperature: (20±1)℃
Relative humidity: Constant temperature room below 85%
There should be no mechanical vibration that affects the metering performance during use
2. Selection parameters of piston pressure gauge
NYJ-6 Piston Pressure Gauge
| Model number | NYJ-6 | Measuring range | (0.04~0.6)MPa | Piston core material | |
| Accuracy class | 0.05/0.02 | Platform size (length * width * height)mm | 610*420*230 | Piston rod | Piston cylinder |
| Total weight (Kg) | 20 | Platform body material | Aluminum alloy plate | Tungsten carbide | Tungsten carbide |
| Working medium | At 20℃, the kinematic viscosity of the mixture of 25# transformer oil and aviation kerosene is 9~12mm /s, and the acid value is not greater than 0.05mgKOH /g. Ratio 4.29(25# transformer oil):1(aviation kerosene) |
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Weight configuration table
| Specification (MPa) | Quantity (block) | Size diameter Φ(mm) | Weight (Kg/ block) | material |
| 0.05 | 10 | 135 | 0.5 | Stainless steel |
| 0.01 | 6 | 108 | 0.1 | aluminum |
3. Functional characteristics of piston pressure gauge
1. Patented piston pressure system components, novel structure, anti-collision, tool-free disassembly and assembly, easy to clean the piston system and replace the sealing ring, convenient, fast and safe.
2. Small size, light weight, simple structure and easy operation, more suitable for use in production sites with high utilization rate, with high cost performance.
3. The pressurization system is equipped with a pre-pressure pump, which can increase the efficiency of the pressure regulator. When used in conjunction, the pressurization process will be easier and faster.
4. The voltage regulator is maintenance-free, and the handle is reasonably designed (personalized design according to the holding posture), making operation easier and more convenient.
5. The oil system has a sewage discharge function, making the maintenance and cleaning process simpler and more convenient.
6. The housing of the main engine is made of steel, which is strong and durable. The oil cup has an oil storage capacity of 400ml. It can be customized to enlarge the oil cup according to customer needs, which is convenient for calibrating large quantities of sensors. The cup is equipped with an oil filter. The pipe at the meter socket is directly connected to the oil cup and passes through the sewage filter to ensure the cleanliness of the oil entering the piston system, avoiding dirty oil from entering the piston system and causing blockage and damage.
IV. 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" 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" Design Patent Certificate
6. ZL 201 3 0376500.9 "High-pressure piston pressure gauge" design patent certificate
7. ZL 2019 2 0660375.9 "Fluid pressure gauge piston assembly and piston pressure gauge" utility model patent certificate