Review on Winters PEM202LF Pressure ±3 2 3 Accuracy by Narendra Thapa

I have used these gauges on new water filtration system installations where I have one gauge on the inlet side of the water filter and one on the outlet side of the filter to determine when the filter needs to be changed. At this point, about 1 in 4 gauges will read 5 psi less than other gauges. Actual pressure isn't as important to me as pressure drop, so I know when to change the filter. I am working on this by ordering several sensors and matching them in pairs.