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MWS 897

Product catalog summary

Overview: The MWS 897 is a multi-channel gas warning unit designed by ADOS GmbH for continuous monitoring of ambient air to provide early warnings of hazardous, explosive, and non-combustible gases and vapours.

Specifications:

Sensors: Includes semiconductor, heat reaction, thermal conductivity, fuel cell, and infrared sensors.
Sensor Inputs: Supports 6 two-wire sensors or 3 three-wire sensors, or a combination of both.
Sensor Supply: 19 V= / 200 mA.
Measurement Ranges: CO (0-300 ppm), NO2 (0-30 ppm), CH4 (0-100% LEL), CO2 (0-10 Vol %).
Accuracy: Less than 3% full-scale deviation.
Ambient Temperature: Operates between -10°C to +40°C.
Temperature Effects: Less than 3% for ±20°C change.
Setting Time (t90): Less than 60 seconds.
Installation: Wall-mounting with IP 54 protection class.
Output Signal: Voltage output (1-5 V), RS 232 interface, 3 alarm relays, 1 fault relay.
Relay Rating: 230 V, 450 VA.
Voltage Supply: 230 V, 50 Hz; 115 V, 60 Hz (optional); 24 V= (optional).
Consumption: 14 VA.
Dimensions: 225 x 180 x 105 mm.
Weight: Approximately 1.5 kg.

Applications: Suitable for monitoring in heating systems, garages, tunnels, liquid gas storage rooms, laboratories, cold-storage houses, plastic processing plants, chemical industries, paint manufacturing plants, and more.

Features:

Utilizes various types of measurement sensors.
Includes ready, fault, and gas warning indicators.
Menu-aided operation via 2 keys.
Integrated buzzer and gas half-hourly average value.
Three adjustable alarm thresholds from 0-100% of test range.
Three floating alarm outputs for additional warning and control systems.
Floating fault contact and serial output RS 232 for printer or PC connection.
High reliability and low current consumption.
Plastic, wall-mounting housing for easy installation and operation.

Measurable Gases: Includes acetylene, alcohol, ammonia, butane, carbon dioxide, carbon monoxide, carbon tetrachloride, chloroform, ether, helium, hydrogen, hydrogen chloride, methane, neon, oxygen, petroleum spirit, propane, toluene, and xylene.

Accessories: Signal horn, warning light, warning banner, ventilation control, test meters, plotter, and additional accessories depending on the system ordered.

Catalog excerpts

MWS 897 MULTI-CHANNEL GAS WARNING UNIT I n s t r u m e n t a t i o n a n d C o n t r o l e s t . 1 9 0 0 ADOS GmbH Instrumentation and Control P.O. Box 500 444 · 52088 Aachen · FRG Trierer Strasse 23-25 · 52078 Aachen · FRG Tel: +49 (0)2 41 / 97 69 - 0 Fax: +49 (0)2 41 / 97 69 - 16 E-Mail: [email protected] www.ados.de

Open the catalog to page 1

www.neck-heyn.de 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: -10 °C to +40 °C Temperature effects: < 3 % for ± 20 °C change Setting time (t90): < 60 s Installation: Wall-mounting Protection class: IP 54 Output signal: Voltage output,...

Open the catalog to page 2

All ADOS GmbH, Mess- und Regeltechnik catalogs and technical brochures

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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