MWS 906
Multi-Channel Gas Warning System
Application
The multi-channel gas warning unit MWS 906 continuously monitors the ambient air and issues an early warning of gases and vapours that are dangerous to health, or when there is a danger of explosion, for non-combustible gases and vapours.
Fields of Application
Monitoring of:
- Heating systems
- Garages and tunnels
- Liquid gas storage plants
- Laboratories
- Cold-storage depots
- Plastic processing workshops
- Chemical industries
- Paint varnish manufacturers
- Concentration measurement of O2
- and many more
Features
- 6-section keyboard and backlit 4-line LC-display for displaying actual values, half-hourly average values and fault messages in cleartext
- Ready for operation, fault and gas warning indicators
- Menu-assisted adjustment of equipment parameters via 6-section keyboard
- Three alarm thresholds for each sensor, independently adjustable from 5-100% of the measurement range, also possible to from half-hourly average values
- A maximum of 48 floating outputs for driving additional warning and control devices
- Floating change-over contact for faults, sirens and warning banners
- Serial output RS 232, for connecting a printer or PC
- 4-20 mA current interface as output signal
- Plastic, wall-mounting housing (IP 54)
- High degree of service reliability
- Low power consumption
- Easy installation
- Un-interruptible power supply (UPS) can be used
Examples of measurable gases
Gas |
Formula |
Acetylene |
C2H2 |
Ether |
C4H10O |
Alcohol |
e.g. C2H6O |
Ammonia |
NH3 |
Petrol |
|
Butane |
C4H10 |
Hydrogen chloride |
HCl |
Helium |
He |
Carbon dioxide |
CO2 |
Carbon monoxide |
CO |
Methane (natural gas) |
CH4 |
Neon |
Ne |
Propane |
C3H8 |
Oxygen |
O2 |
Toluene |
C7H8 |
Hydrogen |
H2 |
Xylene |
C8H10 |
Technical data
Sensor inputs: |
16 two- or three-line sensors (e.g. ADOS GTR 196) with current interface 4 – 20mA |
Sensor supply: |
24 V= / 100 mA |
Measurement ranges: |
CH4 0 – 100 % LEL
LPG 0 – 100 % LEL
H2 0 – 100 % LEL
NH3 0 – 1000 ppm
CO2 0 – 4 Vol%
CO 0 – 300 ppm
NO2 0 – 30 ppm
O2 0 – 25 Vol%
further ranges on request |
Digital inputs: |
1 input for cancelling the horn (siren) |
Digital outputs: |
max. 48 relays for alarms
1 fault relay
1 horn relay
1 warning banner relay
All outputs are floating
change-over contacts
rated at max. 250 V / 4 A |
Standard output signals: |
Analog output 4 – 20 mA
Serial interface RS 232 |
Voltage supply: |
115 V / 60 Hz
230 V / 50 Hz (optional)
24 V / DC (optional) |
Power consumption: |
max. 60 VA |
Ambient temperature: |
+14 °F to +113 °F |
Dimension (WxHxD): |
15.4 x 10.6 x 6.3 inch |
Weight: |
approx. 11 lbs |
Protection type: |
IP 54 to DIN 40050 |
Accessories
Signal horn, warning lights, warning banner, plotter, stand-by power supply unit UPS 2000 24 V. Further accessories will be available, according to the proposed measurement tasks.