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ADOS GmbH
Instrumentation and Control

Trierer Strasse 23-25
52078 Aachen, FRG

Phone: +49 (0)241 / 9769 - 0
Fax: +49 (0)241 / 9769 - 16
E-mail: info@ados.de
GWA 2000 | Single-channel Gas Warning Unit


Application  

The single-channel gas warning unit GWA 2000 continuously monitors the ambient air and provides an early warning of hazardous, explosive and non-combustible gases and vapours.
Fields of Application  

  • Monitoring of heating systems
  • Liquid gas stores rooms
  • Laboratories
  • Cold storage houses and air conditioning plants
  • Plastic processing plants
  • Chemical industries
  • Paint manufacturing plants
  • Concentration measurement of O2
  • and many more
Examples of 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
Accessories  

Signal horn, warning light, warning banner, ventilation control, test meters, plotter.
Additional accessories are available, depending on the system ordered.
Features  

  • Use of various types of measurement sensor
  • Ready, Fault and Gas warning indicators
  • Menu-aided operation, via 4 keys
  • Integrated buzzer
  • Three alarm thresholds individually adjustable from 10-100% of test range
  • Three floating alarm outputs for driving additional warning and control systems
  • Floating contact connection for fault and mains failure
  • Serial output, RS232, for connecting a printer or a PC
  • High degree of reliability
  • Low energy consumption
  • Plastic, wall-mounted housing
  • Easy installation
  • Straightforward operation
Technical Data  

Sensors: - Infrared sensor
- Semiconductor sensor
- Heat reaction sensor
- Thermal conductivity sensor
- Chemical sensor
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 +45 °C
Temperature effects: < 3 % for ± 20 °C variation
Setting time(t90): < 60 s
Installation: Wall-mounting
Protection type: IP 54
Output signal: RS 232 interface
3 Alarm relays
1 Fault relay
Analog output 4(0) - 20 mA
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)
Power consumption: 14 VA
Dimensions (WxHxD): 200 x 160 x 90 mm
Weight: approx. 1,6 kg
Product data sheet