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Gas monitor unit- MWS 897
The multi-channel gas warning unit ADOS MWS 897 continuously monitors the ambient air and provides an early warning of hazardous, explosive and non-combustible gases and vapours.
It is suitable for the connection of 6?x “2-wire” or 3?x “3-wire” sensors.
It is suitable for the connection of 6?x “2-wire” or 3?x “3-wire” sensors.
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Measurable gases
Technical Data
| Gas | Formula |
|---|---|
| Acetylene | C2H2 |
| Ether | C4H10O |
| Alcohol | e.g. C2H6O |
| Ammonia | NH3 |
| Petrol | |
| Butane | C4H10 |
| Chloroform | CHCl3 |
| Hydrogen chloride | HCl |
| Helium | He |
| Carbon dioxide | CO2 |
| Carbon monoxide | CO |
| Methane (natural gas) | CH4 |
| Neon | Ne |
| Propane | C3H8 |
| Oxygen | O2 |
| Carbon tetrachloride | CCl4 |
| Toluene | C7H8 |
| Hydrogen | H2 |
| Xylene | C8H10 |
Technical Data
| Sensors: | Semiconductor sensor Heat reaction sensor Thermal conductivity sensor Fuel cell Infrared cell |
| Sensor inputs: | 6 two-wire sensors (e.g. TOX 592) or 3 three-wire sensors (e.g. GTR 196) or 2 three-wire sensors + 4 two-wire sensors |
| Sensor supply: | 19 V = / 200 mA |
| Ranges: | CO 0 - 300 ppm NO2 0 - 30 ppm CH4 0 - 100 % LEL CO2 0 - 10 Vol % further ranges on request |
| Accuracy: | < 3 % , f.s.d. |
| Ambient temperature: | - 10°C to + 40°C |
| Temperature effects: | < 3 % for ±20°C change |
| Response time (t90): | < 60 s |
| Installation: | Wall-mounting |
| Protection class: | IP 54 |
| Output signal: | Voltage output, 1 - 5 V RS 232 interface 3 Alarm relays 1 Fault relay |
| Relay rating: | 230 V, 450 VA other voltages on request |
| Voltage supply: | 230 V, 50 Hz 115 V, 60 Hz (optional) 24 V / DC (optional) |
| Consumption: | 14 VA |
| Dimensions (WxHxD): | 225 x 180 x 105 mm |
| Weight: | approx. 1,5 kg |
- Use of various types of measurement sensor
- Ready, fault and gas warning indicators
- Menu-aided operation, via 2 keys
- Integrated buzzer, gas half-hourly average value selectable
- Three alarm thresholds individually adjustable from 0-100 % of test range
- Three floating alarm outputs for driving additional warning and control systems
- Floating fault contact
- Serial output RS232 for connecting a printer or a PC
- High degree of reliability
- Low current consumption
- Plastic, wall-mounting housing
- Easy installation
- Straightforward operation
- Heating systems
- Garages and tunnels
- Liquid gas storage rooms
- Laboratories
- Cold storage houses
- Plastic processing plants
- Chemical industries
- Paint manufacturing plants
- Concentration measurement of O2
- and many more
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