This vacuum regulator will turn on a vacuum pump when the vacuum get too low in the vacuum chamber or tank. The vacuum regulator will keep a specific range of vacuum in the vacuum chamber.
If you need to hold a specific range of vacuum pressure, this vacuum regulator is the device that will do it. All you need to do is set vacuum range you desire and this vacuum regulator will control the vacuum pump to keep the pressure within this range.
The vacuum regulator allows you to control a vacuum pump, so you don't need to manually turn on the vacuum pump when the vacuum in the vacuum chamber becomes too low. Think of this vacuum regulator as a safe guard against having a vacuum that is too low. Before this device was developed, I needed to turn on and off the vacuum pump manually.
The vacuum pressure controller features two trimmer potentiometers to adjust a low and high end thresholds to control a vacuum pump to maintain a range of vacuum pressure. The extreme ranges that this pressure controller can sense is -115 to 0 kilopascals or 34 to 0 inches of mercury (hg). An LCD is included to show the values of the high and low thresholds and the current sensor reading.
The relay can be connected as NO (Normally Open) or NC (Normally Closed). . The relay that controls the vacuum pump can accepts up to 250V/12A of power.
Overall function of this device: When the pressure is below the low end threshold, the relay will engage, turning on the device (vacuum pump) that is connected to the relay. When the pressure climbs above the high end threshold, the relay will disengage, turning off the device (vacuum pump) that is connected to the relay.
Note: The LCD screen text can be oriented to face either direction.