The sensor is permanently lowered into the water well and at most to just above the pump. If there is no submersible pump in the well, the sensor can be lowered to the bottom. The pump normally hangs 5-7 meters above the bottom in a drilled well.
Our experience is that a cable length exceeding 30-40 meters is rarely needed, even if the hole/pump is deeper. This is because the water level is rarely used deeper than that.
You can of course order longer cable if you wish – and especially if you know that a) there is a low groundwater level (deeper than 10-15m) in the well, b) if water filters with backwashing are used (high consumption) or c) if you know that the well is used to a deep level.
If in doubt, please contact us.
If the cable turns out to be too long during installation, it is fine to leave it loosely wrapped above the well.
In Sweden and with a little luck, your well may be included in SGU’s database Wells, where well depths are indicated.
Standard lengths for the sensor cable are 5, 10, 15, 20, 25, 30 and whole tens up to 90 meters.
Larger lengths are no problem, contact us.
