Pressure Controller of Corrugated Pipe 502/7D

Product Name: 502/7D Explosion-proof Pressure Switch
The Sensor of Switches utilize Diaphragm style, the housing material for partial specification is stainless, it can  be suitable for neutral gas and water, hydraulic pressure oil, lubricating oil, light fuel ect. Fluid medium. The Set  Point is adjustable, and its adjustable range is from --0.1Mpa to 2.5Mpa.





Characteristic: Can be used for vacuum. Special requirements on Pressure Range from -0.1 to 6.3Mpa can be design customized.

The Adjustment for Dead Band Non-Adjustable Switches
   







Example 1, Choose 502/7D, Order No. 0811600 Switch, a contact signal is required to be generated when  pressure rise to 0.5Mpa( the Increasing Set Point)
1) Loose the locknut, screw the Hi-Pressure Port into the threaded connection of Checkout Test Set. Use the  spanner to clip the flat port of the sensor to avoid countermovement of the housing and the sensor. Leave Lo- Pressure Port free.
2) Open the front cover of the switch, let the cable pass through electrical connection and link to the terminal,  link another end to the multimeter.
3) Add the pressure to 0.5Mpa, this value can be read from the standard pressure gauge.
4) Clockwise rotate the Set Point Adjusting bolt, to make the Set Point change from big to small, until it switchs  at 0.5Mpa.
5) Screw the locknut, adjust the pressure of the testing desk, to make the pressure change up and down  around 0.5Mpa, to test if it switches at 0.5Mpa when pressure is rising. Its correspondent Decreasing Set Point  just to be 0.5Mpa minus Dead Band 0.03

Example 2. Choose 502/7D, Order No. 0811700 Switch, a contact signal is required to be generated when  pressure fall to 0.8Mpa (The Decreasing Set Point)
1. ) Loose the locknut, screw the Hi-Pressure Port into the threaded connection of Checkout Test Set. Use the  spanner to clip the flat port of the sensor to avoid countermovement of the housing and the sensor. Leave Lo- Pressure Port free.
2. ) Open the front cover of the switch, let the cable pass through electrical connection and link to the terminal, link another end to the multimeter.
3. ) Add the pressure to 0.8Mpa, this value can be read from the standard pressure gauge.
4. ) Contrarotate the Set Point Adjusting bolt, to make the Set Point change from small to bigl, until it switchs at  0.8Mpa.
5. ) Screw the locknut, adjust the pressure of the testing desk, to make the pressure change up and down  around 0.8Mpa, to test if it switches at 0.8Mpa when pressure is falling. This value is just the Decreasing Set  Point, Its correspondent Increasing Set Point to be 0.8Mpa plus the Dead Band 0.075Mpa, just 0.875Mpa 


TheAdjustment for Dead Band Adjustable Switches.
Example 3, Choose 502/7D, Order No. 0801600 Switch, a contact signal is required to be generated when  pressure rise to 0.5Mpa( the Increasing Set Point)
1) Loose the locknut, screw the Hi-Pressure Port into the threaded connection of Checkout Test Set. Use the  spanner to clip the flat port of the sensor to avoid countermovement of the housing and the sensor. Leave Lo- Pressure Port free.
2) Open the front cover of the switch, let the cable pass through electrical connection and link to the terminal,  link another end to the multimeter.
3) Add the pressure to 0.4Mpa, this value can be read from the standard pressure gauge.
4) Contrarotate the Set Point Adjusting bolt until it switches at 0.4Mpa, this is to fix the Decreasing Set Point. 
5) Contrarotate the Set Point Adjusting Bolt again, to ensure the Dead Band value become larger until it  switches at 0.6Mpa when pressure is rising.
6) Tighten the locknut, adjust the pressure of the testing desk, to make the pressure traversing between  0.4Mpa to 0.6Mpa, the test if it switches at 0.6Mpa when pressure is rising. This value is just the Increasing Set  Point. And to test if it switches at 0.4Mpa when pressure is falling. This is the Decreasing Set Point.