Multigas analyser for continuous process monitoring, in 19-inch rack or benchtop format
Monitoring the composition of biogas, syngas or other process gases continuously and feeding the readings to a PLC or SCADA system calls for a fixed multigas analyser with analogue outputs, industrial communications and on-board logging. The Rapidox 7100 measures up to seven gases at once, with ranges from 0-10 ppm to 0-100 % and 0.01 ppm / 0.01 % resolution, calculates the calorific value in real time and delivers the data through 0-10 V and 4-20 mA outputs, programmable alarm relays and RS232/RS485 with Modbus RTU/Ethernet, in a 6.5 kg 19-inch rack or benchtop enclosure.
Rapidox 7100 key data
- Gases: up to 7 simultaneously from a matrix including O2, CO2, CH4, H2O, CO, Cl2, NO, NO2, N2O, C2H4, O3, H2S, He/H2, NH3, SO2 and SF6, plus a type K thermocouple; ranges from 0-10 ppm to 0-100 %.
- Sensor technologies: zirconia or electrochemical O2, infrared, tunable laser diode (TLD) for CH4, capacitance for moisture, thermal conductivity (TCD) for H2/He and electrochemical sensors for toxic gases.
- Syngas configuration: H2 by TCD with background gas correction, CO and CO2 by infrared, CH4 by TLD and electrochemical O2, all with ±1 % of full scale and 0.1 % resolution (0.01 % for O2).
- Biogas configuration: CH4 and CO2 from 0 to 100 % by infrared, O2 0 to 30 % and H2S 0-2,000 or 0-10,000 ppm, with calculated calorific value.
- Integration: user-programmable linear 0-10 V and 4-20 mA outputs, programmable alarm relays, RS232 (RS485 optional) and Modbus RTU/Ethernet.
- Sampling: fixed or continuous mode, measurement in approx. 2-4 min after a 3-4 min warm-up, user-selectable 0-1 l/min pump and maximum inlet of 50 °C and 10 bar (gauge).
- Data and calibration: 4 GB internal storage for approx. one year of continuous monitoring, Excel-compatible USB download and user zero and span calibration with two selectable gases.
- Format: 19-inch rack (132 × 482 × 365 mm) or benchtop (180 × 570 × 345 mm), 6.5 kg, 90-260 V AC, 50/60 Hz supply.
Advantages
Up to seven gases without cross-interference
High-precision sensors are calibrated individually to avoid cross-interference with the background process gas; flashback arrestors protect the measuring circuit where required.
Built for permanent installation
The analyser is supplied in a 19-inch rack-mount enclosure or as a benchtop version, operates on any worldwide mains voltage (90-260 V AC) and offers fixed or continuous sampling modes.
Direct integration with control systems
Programmable alarm relays, linear analogue outputs (0-10 V and 4-20 mA) and RS232/RS485 communications with Modbus RTU/Ethernet allow readings to feed SCADA and PLC systems.
A year of data on board
All readings are logged continuously: the 4 GB internal memory covers about one year of monitoring, with Excel-compatible download via USB stick.
Calorific value in real time
For biogas, syngas and other energy-containing gases, a thermodynamic calculation shows the calorific value on screen together with the composition.
Applications
- Biogas, syngas and hydrogen production analysis.
- Glove boxes and inert-gas blanketing.
- Metal heat treatment and manufacturing processes.
- Medical, food-industry and research gas analysis.
About the product
The Rapidox 7100 is a modular multigas analyser for continuous duty: the sensor combination is specified per order from a matrix that covers O2, CO, CO2, O3, H2O, H2, H2S, NO, NO2, N2O, SO2, Cl2, CH4, C2H4 and SF6, among others. A 7-inch colour touchscreen, multi-language interface and password protection complete the unit.
Available accessories: calibration kit, calibration service, multiplex sampling system, gas recovery bag, gas filters, thermal printer and RS232-USB converter.
Technical specifications
| Measured gases | Up to 7 simultaneously |
| Format | 19-inch rack (132 × 482 × 365 mm) or benchtop (180 × 570 × 345 mm) |
| Analogue outputs | 0-10 V and 4-20 mA, user-programmable |
| Communications | RS232 (RS485 optional); Modbus RTU/Ethernet |
| Alarms | Programmable relay circuits |
| Data | 4 GB internal storage; Excel-compatible USB download |
| Display | 7-inch (180 mm) colour touchscreen; resolution 0.01 ppm / 0.01 % |
| Supply | 90-260 V AC, 50/60 Hz; weight 6.5 kg |
| Syngas configuration | H2 (TCD), CO and CO2 (IR), CH4 (TLD), O2; ±1 % FS |
| Measurement time | Approx. 2-4 min; warm-up 3-4 min at 20 °C |
| Connections and inlet conditions | Rectus 4 mm ID / 6 mm OD or Swagelok, rear-mounted; max. 50 °C and 10 bar (gauge) |
Frequently asked questions
What accuracy does the Rapidox 7100 offer for syngas analysis?
Configured for syngas, the Rapidox 7100 measures H2 by thermal conductivity with background gas correction, CO and CO2 by infrared, CH4 by tunable laser diode and O2 with an electrochemical sensor, all with ±1 % of full scale and 0.1 % resolution (0.01 % for O2), and calculates the calorific value of the gas.
Can it be installed outdoors or in a hazardous area?
The 19-inch rack version of the Rapidox 7100 can be housed in a suitable enclosure for use outdoors or in a hazardous area. The analyser accepts samples up to 50 °C and 10 bar (gauge) and runs on 90-260 V AC, 50/60 Hz.
Which mounting formats are available?
A 19-inch rack-mount enclosure for standard test racks and a benchtop version with carrying handle.
How does it connect to a control system?
Through programmable relay alarms, linear 0-10 V and 4-20 mA outputs and RS232/RS485 communications with Modbus RTU/Ethernet.
Which gases can be configured?
Up to seven from a sensor matrix including O2, CO, CO2, H2, H2S, CH4, SO2, Cl2, N2O and SF6, among others; cross-sensitivity limits some combinations.
Does it need a pump?
An optional pump (0-1 l/min) draws samples from atmospheric or sub-atmospheric sources; pressurised sources flow through the analyser directly.
