MWS 897 - Ados GmbH
e s t .
1 9 0 0
Instrumentation and Control
Multi-channel gas warning unit
MWS 897
ADOS GmbH
Tel: +49 (0) 2 41 / 97 69 - 0
Instrumentation and Control
Fax: +49 (0) 2 41 / 97 69 - 16
P.O. Box 500 444 · 52088 Aachen · FRG
info@ados.de
Trierer Strasse 23 – 25 · 52078 Aachen · FRG
www.ados.de
MWS 897
Multi-channel gas warning unit
e s t .
Application
The multi-channel gas warning unit MWS 897 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
■ 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
Neon
Ne
Oxygen
O2
Petroleum spirit
Propane
C3H8
Toluene
C7H8
Xylene
C8H10
Accessories
Signal horn, warning light, warning banner, ventilation
control, test meters, plotter.
Additional accessories are available, depending on the
system ordered.
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 sensor +
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:
14 °F to 104 °F
Temperature effects:
< 3 % for ±36 °F change
Setting 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:
115 V, 450 VA
other voltages on request
Voltage supply:
115 V, 60 Hz ­
230 V, 50 Hz (optional) 24 V≈ (optional)
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
■ 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 RS 232 for connecting a printer or a PC
■ High degree of reliability
■ Low current consumption
■ Plastic, wall-mounting housing
■ Easy installation
■ Straightforward operation
■
■
www.neck-heyn.de ·11_2010
Measurable gases
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Gas
Formula
Acetylene
C2H2
Alcohol
e.g. C2H6O
Ammonia
NH3
Butane
C4H10
Carbon dioxyde
CO2
Carbon monoxide
CO
Carbon tetrachloride
CCI4
Chloroform
CHCI3
Ether
C4H10O
Helium
He
Consumption:
14 VA
Hydrogen
H2
Dimensions (WxHxD):
8.85 x 7.08 x 4.13 inch
Hydrogen chloride
HCl
Weight:
approx. 3.3 lbs
Methane
CH4
ADOS GmbH
Instrumentation and Control
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