
To ensure accurate readings with your KELLER LPX Low Pressure Calibrator, you'll need to zero it. Here's how: First, connect the hand pump to the appropriate port. Next, carefully open the pressure relief valve until you see the red mark, ensuring any existing pressure is released. If the display isn't showing zero, initiate the zeroing procedure (Set Zero). Finally, close the pressure relief valve. Following these steps will prepare your KELLER LPX for precise low-pressure measurements.


