I have several GW Kent brand tri-clamp pressure gauges that do not read zero anymore.
https://www.gwkent.com/digital-sanit...-gauges-1.html
Anyone know how to re-calibrate them? I followed the instructions on GW Kent (https://www.gwkent.com/media/pdf/pro...sure_gauge.pdf) for "burping the vent cover", but that hasn't changed anything.
There is a small set screw near the base, and when I remove it, there is something inside, but I can't figure out if I can do anything in there!
Any help would be appreciated.
https://www.gwkent.com/digital-sanit...-gauges-1.html
Anyone know how to re-calibrate them? I followed the instructions on GW Kent (https://www.gwkent.com/media/pdf/pro...sure_gauge.pdf) for "burping the vent cover", but that hasn't changed anything.
There is a small set screw near the base, and when I remove it, there is something inside, but I can't figure out if I can do anything in there!
Any help would be appreciated.
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