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marekm · 10th July 2007, 06:20

Hi DrMike,

Here are some basics for making a Digital Panel Meter (DPM) based PPO2 meter.
Construction, Operation, and Maintenance of an O2 Meter

Also, here is a tip: Almost all DPM's use the same resistor numbering. So R3 in one brand DPM has the same function as R3 in DPM from another manufacturer. Another tip, isolate each O2 sensor, DPM and battery in separate housings, so one failure does not bring down all three PO2 readings. Finally don't forget to put in load resistor for each O2 cell (10Kohm for R22D and 100Kohm for K1D).

Cheers.
-Marek

10th July 2007, 06:20	#2 (permalink)
marekm Banned Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Oct 2006 Location: Brisbane, Australia Posts: 196	Re: How to make a digital ppo2 display? Hi DrMike, Here are some basics for making a Digital Panel Meter (DPM) based PPO2 meter. Construction, Operation, and Maintenance of an O2 Meter Also, here is a tip: Almost all DPM's use the same resistor numbering. So R3 in one brand DPM has the same function as R3 in DPM from another manufacturer. Another tip, isolate each O2 sensor, DPM and battery in separate housings, so one failure does not bring down all three PO2 readings. Finally don't forget to put in load resistor for each O2 cell (10Kohm for R22D and 100Kohm for K1D). Cheers. -Marek Last edited by marekm : 10th July 2007 at 06:24.
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