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UM-X
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8. If the 20 mA point does nor correspond to the tank height,
• fill your tank as full as possible (the 20 mA point must be above the tank
height!),
• measure the level with a dipstick
• and enter the value in the "Span - Change" menu item.
The 20 mA point must not be less than tank height.
For the UM-O and UM-O Ex equipment versions (overfill prevention),
the 20 mA point must correspond to the height of the tank.
9. Now you can set the relay switching points.
It can happen that a switching point is less than 4 mA or more than
20mA by changing the offset or the span factor. If this happens, the
relays do not switch as desired and malfunctions can occur.
Check the current values in the menu items "Relays -> K1...K5 -> S-P On
and S-P Off". If the current values are outside the desired range,
"< 4.00 mA" or "> 20.00 mA" will be displayed under the milliampere
unit.