[NotDeadYet]

Originally Posted by Drmike

Ahh finaly found it. I couldnt recall the address and had to search about a bit for it but here is a good source too - http://insane.bug-e.net/Puffer/PPO2/index.html

It's an interesting link. Has anyone used his meters?

The easy part is building a display, it is just a panel meter with a replacement potentiometer. For about £60 Oxycheq do a DIY analyser kit which works very well and you even get a sensor with it.

The hard part is the housing. The PPO2 housing is dead simple but the problem is getting the delrin plugs machined. Oxycheq did sell them but they were out of stock last time I asked.

This guy in South Africa seems to have done quite a nice complete unit and at £140 isn't too expensive for what you are getting. It looks very well made. When my new RB comes I might add one to my old RB.