SPG failure frequency?

[Stu S.]

I had the gauge blow right off the end of the hose, back round 1978. It was a new U.S. diver's gauge. Also had two hoses fail...Kaboom.

 

[keyshunter]

I have had only 2 spg failures, not counting hose or o-ring leaks. One relatively new one failed to fire up at the beginning of a dive day. The other developed a slight leak at the sealing plug after about 15 years of use, but still worked. I still use several spg's that are more than 15 years old, and they still function perfectly. I check them against a new gauge frequently. Most new gauges today seem to have a built in negative bias--they read 100 to 300 psi lower than actual which is a very good thing. Incidentally, during one five-year period, I had 3 Pelagic (Matrix, Sherwood, Oceanic) non air integrated computers fail repeatedly. The shop used to joke about "playing musical computers" as these were returned. These days, I dive with an analog spg, a computer, and a back-up computer. This pretty much shows where my trust lies.

 

[PhilEllis]

With all of the questions about the SPG and how it works, how it fails, I thought it would be neat to put up a little page on our website that shows these things from the inside. Gives you a good idea of how they work.

How a Submersible Pressure Gauge Works!

Thanks,

Phil Ellis

 

[mtbrider]

With all of the questions about the SPG and how it works, how it fails, I thought it would be neat to put up a little page on our website that shows these things from the inside. Gives you a good idea of how they work.

How a Submersible Pressure Gauge Works!

Thanks,

Phil Ellis

Cool page, thanks.