Reference dimension (Y):Reference dimension between the marking groove atthe top of the probe tube and the hexagonal support of the screw-in unit to check the correct adjustment of the response length (L), when the level detector is already mounted.

H Tank height S Stub/sleeve height A Response level Z Probe length L Response length Y Reference dimension Fig.3: Alignment dimensions of the level detector

2Adjusting the response length (only level detectors LOF1.1..E..)

1.Calculate the response length (L) depending on the tank dimensions (H and S)and the response level (A). L = (H - A) + S2.Adjust the calculated response length (L) on the level detector.

3Installing the level detector in the tank

The potentiometer in the level detector electronics is set by default andis not to be modified by the operator. The level detector is to be mounted in the tank as perpendicular as possible, sothat residual liquid can drip off the sensor easily.

Overfill Protection System LOF 1.1 and LOF 500/NB220Page 18/43