The DPM72 O2 Oxygen analyser in a self contained unit housed in a custom 3u x 1/4 rack width case, that can also be panel mounted. This unit uses a high stability electro-chemical sensor with built in temperature compensation. The display has high and low set points with audio visual alarm and mute circuit. Day to day calibration is carried out from the front panel. All the calibration and alarm parameters are retained in non volatile memory. Specification Operating principle : Electro-chemical Range : 0 to 100% Oxygen Accuracy : 1% of Full Scale Responce Time : 90% in 12 Seconds Sample Flow : 10 to 300 ml/min Housing : 3u x 21 HP (1/4 Rack) Relay output : 8 Amp change-over relay Options : Analogue/Serial output Warranty : 12 months Power Requirements : 110, 220 VAC or 24 VDC 6W Dimensions Height = 128 mm Width = 106 mm Depth = 218 mm