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4.5 Installation in Standpipes or Wells
1) Saturate the filter stone (see Section 3) and establish a zero pressure reading (see Section
4.1).
(Warning! Do not allow the piezometer to freeze once the filter stone has been
saturated!)
2) Mark the cable where the top of the well or standpipe will reside once the piezometer has
reached the desired depth. (The piezometer diaphragm is located 3/4 of an inch above the tip
of the piezometer.)
3) Lower the piezometer into the standpipe/well.
4) Be sure the cable is securely fastened to prevent the piezometer from sliding further into the
well and causing an error in the readings.
It is not recommended that piezometers be installed in wells or standpipes where an electrical
pump or cable is nearby. Electrical interference from these sources can cause unstable readings.
If unavoidable, it is recommended that the piezometer be placed inside a piece of steel pipe. In
situations where packers are used in standpipes, special care should be taken to avoid cutting the
cable jacket with the packer, as this could introduce a possible pressure leak in the cable.
Figure 6 - Typical Level Monitoring Installation
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