Yes, you have to make up an adapter to do this. An extra brass inlet piece can be soldered to an appropriate fitting to adapt to a hose. Or a machinist can make one with a small lathe. A good adjustable low pressure source set to a known depth equivalent pressure is applied to the gauge with the lens off. About mid-range on your depth gauge is a good starting place. Did you see the post I made of the gauge needle puller? use something like that to pull the needle from the stem and replace it at the depth corresponding to the pressure you are applying. Tap it gently back in place and put the whole thing back together. Repeat as needed until satisfied. Yes, it is a lot of trouble... that's why I "used to" do it.SurfLung wrote:- So I suppose to calibrate one of these, you'd have to have the mechanism in the open air at sea level pressure and have a sealed pressurization hose connected to the pressure port.
SurfLung wrote:Failed Again!
- I really thought I had this figured out. The inlet port is clean. The inside inlet to the Bourdon tube is clean... Doesn't look like it ever had corrosion. The crystal and the inlet port seals are holding with no leaks... At least as deep as 11 feet at the pool. But the needle isn't registering ANY movement at least down to 11 feet at the pool.
- It seems like something is not letting the water into the Bourdon tube. But right now, I can't spot the cause.
I tend to like CLR and warm water about 50/50. I have tested chrome plated brass regulator plugs in this for over 24 hours of constant submersion with no apparent chrome damage, but still suggest keeping the time well below that on critical parts just in case. I hear of possible chrome damage with long vinegar submersions, but have cleaned many regulators that way with good results. I usually added some Simple Green to that. CLR smells better, but I think vinegar will do the job too.SurfLung wrote:Oh Ha Ha... I DO have a friend in Texas but I already owe him 3 steak dinners and a couple of cases of beer!
Thanks for that clever idea. I'm swimming laps twice a week at the High School pool that is 11 feet deep. Next time I'll bring the Calypso depth gauge in a baggy and leave it on the bottom while I swim. This will be fun...
Question: Which would be better, vinegar or CLR?
Not sure I would have phrased it quite that way...SurfLung wrote:baggie full of AntiqueDiver Joy Juice
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