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8.5
Determining the installation length by measuring with a tape measure
The installation length (B) can be determined by measuring from the upper edge of the remote transmission unit to the
level probe (marker) with a tape measure.
For this purpose, the level probe must be mounted to the remote transmission unit and then laid out on the ground.
Make sure that the cable of the level probe is taut, so that measurement errors are avoided. The length is measured
from the upper edge of the remote transmission unit to the marking of the level probe. This measured value corre-
sponds to the installation length (B).
This method for determining the installation length is only suitable for shorter cables, because the stretching of the
level probe cable is difficult to manage with a long cable and an appropriate space must also be available.
We recommend determining the installation length (B) at the measuring point, as explained below. The advantage of
this method is that all influences such as a not completely stretched cable etc. are corrected and during the installation
it can be checked whether the water level calculation is correct with the determined parameters.
8.6
Determining the installation length (B) at the measuring point
The installation length B is most easily determined on site at the measuring point by measuring
the distance F from the upper edge of the measuring point to the water surface with a tape
measure/light plummet.
The water level E is read out by the pressure sensor/level sensor.
B = E + F
By addition of distance upper edge to water surface F and water height E, the installation length
B results, which is needed for the water level calculation depth to water (tap) F and water height
related to sea level G.
8.7
Electric contact gauge
electric contact gauge
A
a weight. As soon as the weight, which also includes an electrical contact, touches the water surface,
a sound is generated. When the sound is heard, the exact distance to the water surface can be read
off the measuring tape at the upper edge of the measuring point.
Version 05/2021
is a tape measure on a roll, which is lowered into the measuring point with
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