The DPM72 CO2 Carbon Dioxide analyser is a self contained modular unit housed in a custom 3u x 1/2 rack width case, that can also be panel mounted. The unit uses a high stability dual wavelength infra-red sensor, it has a built in sample gas drier and flow meter with regulating valve. The display module has both high and low user programmable set points with an audio visual alarm and mute circuit. Day to day calibration is carried out via the front panel keypad. All the calibration and alarm parameter are retained in non volatile memory. Specifications Operating Principle : Dual wavelength Infra-red Absorption Range : 0 to 0.5 % CO2 (5000ppm) Other ranges on request Accuracy : +/-1 % of Full Scale Zero Drift : <+/-2 % FSD over 12 Months Temperature Effect : <0.4 % of F.S.D. per Deg. C. Response Time : 90 % in 10 Sec Warm Up Time : <3 Minutes Sample Flow : 10 to 300 ml/min Housing : 3u x 42HP (1/2 Rack) Relay Output : 8 Amp change-over relay Options : Analogue/Serial output Warranty : 12 Months Power Requirements Dimensions Height = 128 mm Width = 213 mm Depth = 218 mm