Metro Addressable Gas Detector - APC

The Metro addressable gas detector enables remotemonitoring of flammable and toxic gas hazardscommonly found in car parks, tunnels or other areaswhere automotive vehicles may operate. Leaks fromfuel lines may include flammable materials such asLPG or petrol, while exhaust fumes contain CarbonMonoxide and Oxides of Nitrogen that are toxic.The Metro system comprising multiple detectors andcontroller is designed to protect people from suchhazards while minimizing building running coststhrough economical control of ventilation systems.The Metro gas detector offers simple and low cost installation. The mounting base is fixed into position without thedetector fitted, thereby offering unhindered access to terminals for the installer. 4 x 1mm 2 (17AWG) screened cable canbe terminated at each base with terminals for cable in, out and spur. Once all cabling is complete, the detector simplyplugs into the base and is secured into position via two screws. Every detector is supplied complete with oneof two types of vandal proof guard, flush or surface mount.Set up and configuration could not be easier. Each detector is configured using the ZHC2 infrared remote control(supplied with each controller). Configurable options include gas type, address, four alarm set points (instantaneousor time weighted action), local relay (trip point, energised/de-energised operation, NO/NC link selectable), local audiblealarm operation (active or disabled) and calibration (see specification table for applicable ranges). The ZHC2 saves eachdetector setting for download to the controller, thereby configuring all controller inputs quickly and easily.Reliable operation and ease of maintenance played a key part in the design of the Metro detector. Trouble free longlife can be expected using Zellweger Analytics patented Surecell electrochemical toxic sensor technology andpoison resistant catalytic bead flammable sensors. Detectors are serviceable to reduce on-going costs to an absoluteminimum.With each controller capable of powering up to 250 detectors, without the need for booster power supplies, a Metrosystem is sure to offer installers and end users the lowest cost and safest gas monitoring solution on the market today.One-Stop Shop• Flammable and toxic gas monitors available• Methane, LNG and LPG (0-100%LEL)• Carbon Monoxide (0-300ppm)• Nitrogen Dioxide (0-10ppm)Proven Sensor Technology• Surecell TM electrochemical sensors• Poison resistant catalytic bead• Fast and reliable• Typical 2 to 5 year operational lifeFully Configurable• Four alarm levels (instantaneous ortime weighted)• Local relay for local control• Built in audible alarm if required• Status indication via LED• Self test push-buttonUser Friendly• Plug-in detector and base configuration• Non-intrusive, one-man operation• Infrared remote control configuration• Data download to controller for easyset up of inputsCost Effective• Low detector cost• Mounting base and vandal proof guardincluded as standard• Fully serviceable to minimise long term costs• Minimal training requiredEasy to Specify• Up to 125 detectors per 1Km (3000 feet)of cable• No booster supplies required• Fully user configurableEasy to Install• Industry standard cable used for installation• Mounting base included• Plug-in detector provides easy accessto terminals• Three-way termination for in, out and spur

Technical SummaryVandal Proof Guard (Flush Mounting)General SpecificationUseDetectable GasesAddressable gas monitor for use with dedicated Metro control system to detect flammable andtoxic gases commonly found where automotive vehicles are in operation. Applicable to, but notlimited to, car parks, tunnels, loading bays, warehouses or similar. Suitable for use innon-explosive atmospheres only.Gas (F)lammable (C)arbon Monoxide (N)itrogen DioxideStandard Range (1) 0-100%LEL Propane 0-300ppm 0-10ppmAlternate Range (2) 0-100%LEL C1 to C5 0-500ppm N/aAlarm 1* 10%LEL 35ppm 2ppmAlarm 2* 20%LEL 80ppm 5ppmAlarm 3* N/a 100ppm N/aAlarm 4* N/a 120ppm N/aOverall diameter: 218mm (8.6”)Overall height: 84mm (3.3”)Vandal Proof Guard (Surface Mounting)Overall diameter: 218mm (8.6”)Overall height: 120mm (4.7”)Conduit boxes should be sourced separatelysubject to site installation requirements.*All factory set alarms are instantaneous i.e. time weighted function is disabled. Time weighted alarms may be set from 1 minute to8 hours. Alarms may be set between 10% and 90% of full scale.InterfaceStatusIndicationSelf TestPush ButtonLocal audible alarm rated 75dB at 1m (3 feet) (may be user disabled).Tri-coloured, ultra-bright LED indicating warm up (steady green), system healthy (flashinggreen), gas alarm (flashing red) or detector fault (flashing amber). May be masked from viewvia gas type label supplied.Status indicator doubles as self-test push button to enable local self test of audible alarm,visual indicator and sensor circuit. No executive outputs are activated during self-test operation.Configuration ZHC2 infrared remote control (supplied with Metro controller) enables user configuration of gastype, address, alarm set points (instantaneous or time weighted), zero and span calibration,activation of audible alarm and relay set upElectricalSafetyGeneralRecomendedCableRelayConstructionMaterialComplies with IEC/EN 61010 Electrical Safety. Designated Class II, Pollution Degree 2 (doubleinsulated) not requiring an electrical safety earth4 wire connection 2 x power, 2 x digital communicationsPower: 85-265Vac, 50/60Hz auto-sensing @ 2W (supplied via controller)Communications: Pulse width modulated for improved protection from RFI4 x 1mm 2 (17AWG) c.s.a. with overall screen and drain wire, suitably rated for AC/DC operation1 x NO/NC (link selectable) rated 1A, 30VDC (non inductive load)Configurable as disabled or trip at alarm level 1 to 4, normally energised or de-energisedDetector: ABS (UL94V0). All PCBs conformal coatedVandal Proof Guard: Polyurethane coated mild steelDimensions Refer to diagramsWeight Detector: 0.45Kg (1llb)Vandal Proof Guard: flush mounting 0.65Kg (1.4llbs), surface mounting 0.8Kg (1.8llbs)Approvals CE, EMC (EN50270), Electrical Safety IEC/EN61010Designed to meet NEN2443 and VDI2053Contact Zellweger Analytics for latest informationEnvironmentalIP Rating For use indoor only, IP2X in accordance with EN60529:1992Operating -20°C to +40°C (-4°F to 104°F)TemperatureOperating Continuous 20-80%RH (non condensing)Humidity Intermittent 10-90%RH (non condensing)Operating 90-110kPaStorage -20°C to +50°C (-4°F to 122°F)Conditions 20-80%RH (non condensing)