MWS 897
Многоканальный газосигнализатор
Multi-Channel Gas Analyser
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.
Features
- 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
Fields of Application
Monitoring of:
- 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
Measurable gases
| 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 |
Accessories
Signal horn, warning light, warning banner, ventilation control, test meters, plotter.
Additional accessories are available, depending on the system ordered.