Calibration in Empty Tank:

1. Install the sensor and connect the output signal
2. Hold the provided magnet to the marked position "CAL" on the label
3. Output signal will change to 1 mA (0 Vdc) (Magnet has been detected by the device)
4. Continue to hold the magnet in the marked position (approx. 10 seconds)
5. Output signal will change to 2.5 mA (2.5 Vdc) (Remove magnet)
6. Calibration process will be complete after approximately 5 seconds