piston type pressure gauge
The deadweight tester can be used to transmit the pressure value and to measure high-precision instruments.
The deadweight pressure tester (hereinafter referred to as the pressure tester) is based on the working principle of making the force produced by fluid pressure at the lower piston end equivalent to the gravity of weights placed at the upper piston end.
The pressure tester has the following features:
1. Piston system (piston and piston cylinder) is made of tungsten carbide, enjoying low deformation error and additional temperature error, wear-resistant, and keeping the piston system size unchanged for a long time;
2. Equipped with a digital indicator of piston working position, it is
convenient to read corresponding values.
At the ambient temperature of (20±2) ℃ and temperature fluctuation of no more than ±0.5℃, the uncertainty of measurement is as shown in Table 1
1. Measurement Range and Required Weight and Quantity As shown in Table 2
Type | CW-6T ～ | CW-60T ～ | CW-250T ～ | CW-600T ～ | CW-1000T ～～ |
Measurement range (MPa) | 0.04 0.6 | 0.1 6 | 0.5 25 | 1 60 | 2 100/1 100 |
Upper nominal limit (MPa) |
0.6 |
6 |
25 |
60 |
100 |
Lower nominal limit (MPa) |
0.04 | 0.1- | 2-0.5 |
1 |
2/1 |
Upper measurement range (MPa) |
0.6 |
6 |
25 |
60 |
100 | |
Lower measurement range (MPa) |
0.04 |
0.1 |
0.5 |
1 |
2/1 | |
Nominal area of piston (cm2) | 1 | 0.5 | 0.1 | 0.05/0.1 | 0.05 | |
Chassis and piston | Nominal mass (kg) |
0.4 |
0.5 |
0.5 |
0.5/1 |
1/0.5 |
Pressure produced (MPa) |
0.04 |
0.1 |
0.5 |
1 |
2/1 | |
Special weight | Nominal mass (kg) |
0.1;0.5 |
0.5;2.5 |
0.5; 2.5 |
0.5; 2.5 or 1; 5 |
0.5;1;2;5 |
Pressure produced (MPa) |
0.01;0.05 |
0.1;0.5 |
0.5 ; 2.5 |
1 ;5 |
1;2;4;10 | |
Quantity (piece) |
6;10 |
4;11 |
4; 9 |
4;11 |
1;2;1;9 | |
Interface thread specification |
M20 × 1.5 |
M20×1.5 |
M20 × 1.5 |
M20×1.5 |
M20×1.5 | |
Total weight, including box (kg) |
53 |
100 |
80 |
85 or 115 |
105 | |
Working medium | The kinematic viscosity of oil mixture of 25# transformer oil and mm 2 / s at 20℃ with the acid value no aviation kerosene is 9~12 , greater than 0.05mgKOH /g. | 20~25 mm2 / s at 20 ℃, with the acid value no greater The kinematic viscosity of Di (2-ethyl-hexyl) sebacate is
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