Measures and displays levels of NOx, SO2, CO and O2

Light and rugged, Bacharach's family of hand-held digital analyzers measure toxic gases or oxygen. Now you can quickly measure and display levels of oxides of nitrogen (NOx), sulfur dioxide (SO2), carbon monoxide (CO), or oxygen (O2) more accurately, efficiently, and economically than ever before. Just turn on the instrument, zero it, and insert the probe into the stack or air being sampled. The analyzer will continuously measure and display readings of a specific gas. Single gas analyzers operate on four replaceable C-size batteries for approximately 14 continuous hours of operation.