REGIN瑞晶楼控 一氧化碳变送器

COFrevision 12 2010COFCarbon monoxide transmitterCOFisintendedfordemand-controlledventilationin e.g.parkinggaragesandroadtunnels. Electrochemicaltransmitterprovidinghighselectivity RobustdesignwithprotectionclassIP56 Linearoutputsignal4...20mAor0...10V COF is a detector intended for demand-controlled ventilation in parking garages and road tunnels etc. The detector is installed for both safety and energy-saving reasons. It measures the carbon monoxide concentration using an electrochemical method of measurement characterised by high selectivity even in low concentrations. The output signals are linear representations of the gas concentration. About vehicle emmissions Carbon monoxide (CO) is produced by running petrol vehicles. All motor vehicles, except for natural gas vehicles, produce CO when cold-started. The gas is dangerous to inhale. Limit values The limit values for carbon monoxide may vary from one country to another. Please check local standards and regulations. The following limit values have been set up by the Swedish Work Environment Authority (according to AFS 2005:17, Occupational exposure limit values): Level limit value (LLV) Short-term value (STV) 35 ppm 100 ppm Two-wire(4...20mA)orthree-wire(0...10V) connectionforeasyinstallation TÜV-approvedinaccordancewithVDI2053 Automaticzeroadjustmentfacilitatesmaintenance Control and alarm levels We recommend using two alarm levels, pre-alarm and full alarm. In case of a pre-alarm, the fans are to be set to full speed and strategically placed flashing lights are to be activated. In case of a full alarm, strategically placed sirens are to be started, advising people to leave the garage immediately. Recommended levels for these alarms: Pre-alarm Full alarm 50 ppm 100 ppmInstallation COF is recommended to be mounted in breathing height, about 180 cm above the floor. One detector is to be placed per 200-500 square metres garage surface, provided that the surface is open (without any ”pockets”) and that there is continuous air flow. If there are any ”service pits”, a COF should be installed in each pit. The transmitter must be mounted with the cable connection pointing up.However, when the gas comes from exhaust fumes, the level limit value is 20 ppm.COFTechnical dataSupply voltage Method of measurement Outputs Calibration Ambient temperature Ambient humidity Protection class Dimensions (WxHxD) Weight Material, casing Type of gas Measuring range Lifetime sensor 12...28 V DC Electrochemical 4...20 mA, two-wire 0...10 V DC, three-wire Automatic zero adjustment -10...+40°C 0...90 % RH IP56 80 x 82 x 86 mm 0.190 kg Polycarbonate Carbon monoxide (CO) 0...300 ppm ~ 6 years The product is TÜV-approved in accordance with VDI 2053 and carries the CE-markWiringThe output signal is set via a jumper according to the figures below.(+) 12...28 V DCCONTROLLER(+)!0...10 V DC (-)(+)

(-)0...10 V DCCONTROLLER(+)(+) 12...28 V DC(-)(-) R = Max. 300 Ohm4...20 mA中国分公司： 中国广州瑞晶贤力信息科技有限公司 传真: +86 20 22029686 电话: +86 20 22029181 手机: +86 13600057088 网址: http://doc.guandang.net Q ＱＱ： 503623494 邮箱: regin168@http://doc.guandang.net