Thank you David. Interesting to note what the "guts" may consist of. I'd forgotten, but there is a bleed hose on this fuel pressure gauge so it's obviously intended to come into contact with fluids. I will report back. On 5/21/17, David Beierl <dbeierl@attglobal.net> wrote: > A gauge for coolant pressure should have full scale reading of at least > 20-25 psi since you're expecting readings up to 15 psi or so. Ideally it > should also not be pinned at zero, but able to register negative pressures > of a psi or two. > > If you don't want coolant to be forced into the gauge, use a length of hose > between cooling system and gauge, and keep the gauge and hose above system > level. > > Most Bourdon tube-type gauge mechanisms are soldered brass and wouldn't be > bothered by coolant. For digital gauges with silicon sensors, I suspect > that resistance to liquids might vary widely but I have no actual > knowledge. > > Yrs, > d >
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