hitech k850gas analysers accuray measure the changes of one constituent in binary or pseudobinary gas mixtures （ie, mixtures in which only one constituent changes）. the ranges provided for k850 depend upon the gas being measured but can be from high ppm to 100%.
a built-in sample pump c/w k850 gas analyser means that samples can be drawn from low pressure sources or can be naturally aspirated. an integral needle valve and flow indicator are used to control the sample flow through the analyser.