How can I measure the Oxygen concentration in my reservoir?

Typically you will not need to do this but it can be help­ful if trou­bleshoot­ing your sys­tem. The best way and least expen­sive way to do this with an oxy­gen sen­sor. All of our air sep­a­ra­tors include a low-oxy­gen sen­sor that auto­mat­i­cal­ly tests the oxy­gen con­cen­tra­tion made by the air sep­a­ra­tor. An alarm indi­cates if the oxy­gen lev­el falls below a stan­dard lev­el usu­al­ly about 75%.

The addi­tion­al sen­sors, men­tioned below, sim­ply plug onto the reser­voir or breath­ing hose to give you a per­cent­age of oxy­gen in the air.  It might be nec­es­sary to press on the reser­voir to cre­ate air flow/mixing to get an accu­rate read­ing.