The Rapidox 3100Z oxygen analyser allows fast and accurate oxygen analysis over the full oxygen range 10-20ppm to 100% O2. The analyser provides continuous on-line oxygen analysis, with a typical response time less than 5 seconds for a 90% response to a step change in gas compositions. The analyser contains a powerful Nitto motor-driven vacuum pump which draws a gas sample at a rate that can be set by the user using the flow gauge/needle valve on the front panel. Typical flow rate is 1 litre per minute. Alternatively the pump can be independently switched off and operated under flowing gas conditions. The zirconia sensor head is located inside the analyser and needs to be heated to 650°C before it will conduct oxygen ions. The analyser supplies heat to the sensor, which is controlled very accurately by a regulated power supply incorporated in the instrument. An internal pressure sensor compensates for small changes in gas pressure to keep the readings stable. The analyser is packed with features including fully programmable alarm circuits, programmable analogue outputs, easy calibration (any two or three user selectable gases), RS232 / RS485 communications, independent type K thermocouple and a full set of communications /data-logging software that is MS Excel compatible.
