Rapidox 3100LD Dual Gas
Rapidox Dual-Gas Analyser for O2 & H2O
Bench-mounted dual Gas analysers for O2 and H20 (moisture). Based on electrochemical and IR sensor technology with powerful internal sample pump and type K input. For on-line continuous measurements in inert gases.
Rapidox Dual-Gas Analyser for O2 & H2O
The Rapidox 3100LD dual gas O2 / H2O (moisture) analyser allows accurate oxygen analysis over the range 0.1ppm to 1% O2 using a special German engineered ppm electrochemical oxygen cell, and a range of H2O concentrations from -100°C to + 20°C dp (dew-point). This special low O2 range analyser is designed for applications where a traditional zirconia sensor is not suitable. This includes applications where the measurement gas contains VOCs, solvents, fuels, helium or hydrogen.
The analyser provides continuous on-line analysis, with a typical O2 response time of less than three minutes from 1% down to 1000ppm. Below 10ppm response times are considerably longer due to the way electrochemical sensorswork. The dew-point sensors are OEM modules provided by Michell
Instruments .and have a typical response time of ten minutes for dew-point gas compositions. The analyser contains a powerful Nitto motor-driven diaphragm vacuum pump which draws a gas sample at a rate that can be set by the user. The flow of gas can be adjusted using the flow gauge/needle valve on the front panel of the analyser. Typical flow rate is 1 litre per minute. Alternatively the pump can be independently switched off and operated under flowing gas conditions. An internal pressure sensor compensates for small changes in gas pressure to maintain the accuracy of readings.
The O2 cell is very sensitive to exposure to high concentrations of oxygen, including air, and to prevent damage the unit is fitted with solenoid valves to keep the cell in the measurement gas at all times; even when switched off. An internal pressure sensor compensates for small changes in gas pressure to keep the readings stable. The dew-point sensors are high precision transmitters that are fully factory calibrated and is supplied with its own Calibration Certificate, providing direct traceability to both UK (NPL) and US (NIST) Humidity Standards The sensor is certified at thirteen dew-point levels across its operating range against a certified reference hygrometer, using a mass-flow humidity generator system as a source of reference calibration gas.
The analyser is packed with features including fully programmable alarm circuits, programmable analogue outputs, easy calibration (user selectable gases), RS232 / RS485 communications and a full set of communications / data-logging software. Full data logging of O2 & H2O together with temperature and pressure is possible using the MS-Excel compatible logging software.
Rapidox Low Range 3100L Dual Gas Analysers
Please click for the Rapidox 3100LA - O2/CO2
Please click for the Rapidox 3100LB - O2/CO
Rapidox Zirconia 3100 Dual Gas Analysers
Please click for the Rapidox 3100ZA - O2/CO2
Please click for the Rapidox 3100ZB - O2/CO
Please click for the Rapidox 3100ZD - O2/H2O
Please click for the Rapidox 3100ZN - O2/N2O
If you would like to purchase the Rapidox 3100LD or have further questions please call technical sales on:
+44 (0)1480 462142
Rapidox 3100LD Dual Gas Front Panel, click to enlarge

Rapidox 3100LD Dual Gas Rear Panel, click to enlarge
Portable battery powered printer
Portable mains powered printer
Peli-Case with bespoke custom insert for heavy duty transportation
Replacement in-line sample filters (pack of 5)
Connects the Rapidox 3100LD to computers without a serial port
Specialist filters used to remove all water from gases under analysis
Specialist filters used to remove a large quantity of water from gases under analysis






















