How do I saturate piezometer filter tips. How about VW piezometers?
There are two types of piezometers in common use today: standpipe piezometers and diaphragm piezometers (VW or pneumatic). There is no need to saturate standpipe filter tips. Water flows into them easily. VW and pneumatic piezometers do not need saturation either, but there is some air in front of the diaphragm that should be displaced, as explained below: Diaphragm piezometers, whether VW or pneumatic, contain air between the diaphragm and the filter. For best results, you should displace this air with water. On a VW piezometer, simply pull the filter off (pull on the knurled ring), fill the cavity with water, and then replace the filter. Pneumatic piezometers don’t have a removable filter. In this case, you simply direct a slow stream of water into the piezometer or submerge it in a bucket of water and tap the bubbles out. Watch the video below to see how it’s done.
