High precision double piston pressure vacuum gauge

  Double piston pressure vacuum gauge is a measuring instrument for pressure measurement based on the principle of hydrostatic balance (that is, the fluid pressure acting on the effective area of the piston is balanced with its loaded gravity)
The force balance is achieved through simple piston and differential piston
It is generally composed of two separate piston systems, * weights and pressure calibrators
Technical parameters:
Measurement range: (- 0
1 ~ 0
25) MPa; (-0
1～0
6)MPa；； (-0
1～1)MPa；
Accuracy grade: 0
5; Grade 0
02; Grade 0
01; Grade 0
005
Material of piston system: piston rod: tungsten carbide
Piston cylinder: tungsten carbide
Weight material: carbon steel (grade 0
5); Non magnetic stainless steel (grade 0
02);
Working medium: mixed oil of transformer oil and kerosene
Overall dimension: 680 mm (x 500 mm) x 50 &#
Product features:
--There are two sets of piston systems, one is a vacuum piston, the other is a positive pressure piston, equipped with two sets of corresponding weights

--The material of piston rod and piston cylinder is tungsten carbide
This material has the characteristics of high strength, high hardness and low temperature linear expansion coefficient, which improves the service life of the piston and prolongs the service life of the piston

--The working change of the piston adopts liquid crystal display, and the observation is intuitive

--The rotation of piston is driven by motor, which saves time and labor

--The weight has been corrected for pressure deformation coefficient and local gravity acceleration

--Optional display functions, including temperature, displacement, time, speed, pressure and other working parameters

--All indicators comply with jjg159-2008 verification regulation of double piston pressure vacuum gauge, jjg99-2006 weight and national metrological verification regulation
Each set can issue verification certificate