YS-2.5 Cheapest Price Vacuum Piston Pressure Gauge With Pressure Meter
Operational Principle and Basic Structure
Operational principle of this pressure gauge is that pressure exerted on the piston surface by the weight of the piston itself and that of specific weight will be balance with the pressure produced in hydraulic container.
The pressure gauge is composed by two parts: testing pump and gauge system. Details please see the picture.
Testing pump includes hand pump (11),oil cup (9) and two valves (6) and (7). There are two nuts installed at valve (6) and (7), which are used to connect precision gauge under test. Main part of the gauge system is a precisely finished piston with precision cross-section. This piston directly load the weight of the weights on the chassis.
Accuracy class:0.02/0.05
Pressure range:-0.1bar,-1bar,10bar,60bar,600bar,1000bar,1600bar,2500bar
Picture show

Application
Piston pressure gauge grade 0.05 (“pressure gauge” herein after) is used to inspect piston pressure gauge grade 0.2 and precision pressure gauge.
Maintenance and Repairing
1. Piston rod and piston cylinder are precision parts, they could not be disassembled randomly. Other parts should be cleaned periodically. Take care when cleaning and installing to prevent the gauge from dirt and wiper fiber.
2. Oil should be filtered, no impurity substances or dirt allowed. After taking into use for some time, oil should be replaced.
3. Put dust cover on the gauge while not being used to prevent it from dust.
4. Send it for calibration every one year.
5. Pressure gauge is equipped with 5 pieces of cup leather. When the pumping hole gives away, loosen the clamp nut, wind the hand wheel counterclockwise to back out the screw. Take off old piston parts, replace the cup leather. Cup leather replaced can revolve flexibly at radial direction.
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