GDS - 404 - 1-4 Channel Gas Alarm - Datasheet

GDS404 Specification Sheetref C467-B• Versatile System Configuration• Flammable, Oxygen and Toxic Gases• 1 to 4 sensors• Plug in sensor channel cards• Two alarm stages• Selectable alarm relays• Analogue 4-20mA output• Delay to alarm optionApplicationThe GDS 404 has been designed with features that provide an effective response to the detection of gas hazards in a widerange of environments, from commercial premises through to heavy industrial applications requiring hazardous areasensing.Typical monitor locations are public buildings, boiler plant rooms, swimming pools, water treatment works, H&V controlsystems, manufacturing and processing plants.Technical DataSensor points • 1 ~ 4Measurements • Combustible Gas - L.E.L., % vol, ppm• Toxic Gas - ppm, % vol• Oxygen - % vol Depletion/Enrichment• Any 4~20mA input signalPower supply • 230/115v AC or 24v DC and specialsPower Consumption • 12 watts - full alarmIndicators • Power - Green L.E.D• Mains Fail - power indicator change green to amber• Alarms - Red L.E.D.s• Fault - Amber L.E.D• Digital Display - 31/2 Digit - gas readout• Sensor channel selection indicator - Amber L.E.D• System test - Alarm L.E.D.s flashing• Alarm Relay Inhibit - Fault L.E.D onOutputs • High Alarm Relay - Common D.P.C.ONormally energised or de-energised, latched or unlatched• Low Alarm Relay - Common D.P.C.ONormally energised or de-energised, latched or unlatchedTECHNOLOGIES LTD 1-4 Channel Gas Alarm• Fault Alarm Relay - Common S.P.C.ONormally energised or de-energised• Channel Relays - 1 per channel high or low selectable S.P.C.ONormally energised or de-energised, latched or unlatched• General Alarm Relay - resetable S.P.C.O• All contacts rated 5A-230vAC• Analogue 4 ~ 20mA output per channel• Output 24vDC @ 100mA max - auxiliary equipment (non inductive)Audible Alarm • Permanent mute option.Lo, Hi, Fault alarmsAlarm Settings • Digital Setting (fully adjustable between zero and fullscale)• Delay to alarm T1 - 10 seconds, T2 - 30 seconds, T1 + T2 - 10 minutesSensor inputs • Bridge type 3 wire mV input• 4~20mA (electrochemical/infrared)Sensor cable • 3 core 1.5mm2 screened < 1.5kmMiscellaneous • EMC approvals EN50270 Marine EN60945• Enclosure - cable entry - bottom/rear• Operating temperature -10 to +50°C• Relative Humidity 0 - 90%• Protection IP52 - option IP65• Dimensions 310W x 265H x 75Dmm• Weight 3.6kg• Optional backup battery• Field terminals - 2.5mm quick release• System/lamp test• Remote Accept/Reset• Alarm isolate during service - inhibitSensorsField TerminalsRepeated for each channel 1~4terminals 14-21XDI-win 900020 J 40 JXDI1E LMains Common Relays RelayChannel1NC C NO NC C NO NC C NON5Low High Fault- + 4/20NC C P Y W - +NO14 21 Sensor OutputSafe AreaHazardous AreaTechnical Data ref C467-BISO 9001This document is not contractual and the equipment specification may be modified at any time without prior notice. TECHNOLOGIES LTDC808GDS Technologies LtdFusion Point, Ash LaneGarforth, Leeds LS25 2GATel +44 (0)113 286 0166Fax +44 (0)113 287 8178sales@gds-technologies.co.ukwww.gds-technologies.co.ukGDS 404S4S3S2S1