Description
The Rapidox 3100 oxygen analyser allows fast and accurate
oxygen analysis over the full oxygen range (10e
-17 ppm to 100% O
2 ). The Rapidox 3100 analyser provides con- tinuous on-line oxygen analysis, with a typical response time less than 5 seconds for a 90% response to a step change in gas compositions. At the heart of the Rapidox 3100 is a top-of-the-range Medo linear-motor-driven free
piston vacuum pump manufactured by Nitto; a world leader in pump technology. The pumps are exceptionally quiet (40 dB/m or less). The flow of gas can be adjusted us- ing the flow gauge /
needle valve on the front panel of the analyser. Typical flow rate is 1 litre per minute The sensor head is located inside the analyser and comprises a zirconia ceramic tube that needs to be heated to 650°C before it will conduct oxygen ions. The analyser sup- plies heat to the sensor, which is controlled very accurately by a regulated power sup- ply incorporated in the instrument. An internal
industrial 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, pro- grammable analogue outputs, easy calibration (user selectable gases), RS232 commu- nications, independent type K
thermocouple and a full set of communications / data-logging software. The Rapidox 3100 incorporates our highly successful sensor 'clean' mode which is ac- cessed via a push button on the rear of the instrument. This removes deposits on the sensor surface that cause drift if allowed to accumulate.
Features Applications
Continuous gas sampling via powerful internally located linear
piston pump manufacturer Laboratory scale industrial furnace experiments where the control and monitoring of residual oxygen is critical. Flow rate controlled by needle valve / flow gauge on front panel Very fast measurement response (around 5 seconds for a 90% response). Sampling oxygen levels in rooms where asphyxiation may be a hazard. E.g. in rooms containing liquid nitrogen dewars Full measurement range available (10e
-17 ppm to 100% oxygen). Accuracy ± 1% of the actual measured oxygen with a precision ±0.5%. Monitoring vehicle emissions and pollution control Independent type K thermocouple fitted as standard. Range 0-999°C. Industrial processes using low oxygen environments. E.g. wave
soldering under nitrogen, vacuum welding, testing
nitrogen generators Easy to calibrate by the user using ANY TWO gases. Monitoring of the combustion process in lean-burn applications RS232, 0-5V or 4-20mA current loop outputs (both user programmable). Control of critical oxygen atmospheres where high partial pressures are required. Win 95/98/2100/XP data logging software with MS-Excel compatible graphing. Food production Programmable alarms (low and high condition) with outputs and visual warning. Testing the purity of inert gases such as argon and nitrogen Unique sensor cleaning facility which can be operated at any time during use.
Technical Data: Analyser Technical Data: Sensor & Pump
Voltage 110 / 220V ac 50/60 Hz Analyser dimension 360mm X 410mm X 150mm Weight 7 kg Display 16 X 2 character (9mm) back lit Warm up time 3-4 minutes at 20°C Sample pump Mains powered linear piston pump Normal operating temperature 5-35°C Outputs 0-5V logarithmic (user programmable) 4-20mA logarithmic (user programmable) RS232: data streamed every 1 second Calibration Requires 2 user-selectable gas composi- tions (air is default plus another) Thermocouple Type K fitted to standard compensated plug Range 0-999°C accuracy ± 1°C Maximum free air displacement 7 litres per minute (0.28 cfm) Noise Level 40dB (max) at 1 meter Maximum inlet temperature 200°C Life expectancy > 35000 hours Range of measurement 10e
-17 ppm to 100% O
2 Response time (gas flow rate 1ltr.min
-1 ) approximately 5 secs for a 90% step change (e.g. from 21% to 100% O
2 ) Accuracy ± 1% of the actual oxygen concentration Precision of measurement ± 0.5% of the reading
Cambridge Sensotec Limited 31 Elizabeth Court St Ives CAMBS PE27 5BQ England Tel: +44 (0)1480 385812 Fax: +44 (0)1480 352529 Mob: +44 (0)7866 624236 Sales@cambridge-sensotec.co.uk Www.cambridge-sensotec.co.uk