I have a 150M deep borehole. We want to measure ground water level using a pressure sensor.
I believe that it is best practice to make use of a
Piezometer tube before installing the actual sensor.
- This prevents the sensor from getting tangled with the pump
- Large pumps can create a vortex current which will cause the sensor to move round
- Also helps smooth out any irregularities in the water level.
I was wandering what is the best type of piping to use for this tube?
I am biased towards using a pvc pipe as it does not have any radial bend and can therefore be inserted into the well much easier. However I would have to join many smaller segments together and I am concerned that these joins might come undone over time. Vertically hanging 150m of 30mm pvc will probably be quite heavy.