ATI - EE85 Series - Dual Beam CO2 Transmitter and Switches for Duct Mounting - Brochure

102Duct mounted CO2 transmitters and switches of the EE85 seriesare designed for HVAC applications. The CO2 sensing elementuses the Non-Dispersive Infrared Technology (NDIR). A patentedauto-calibration procedure compensates for drift caused by theaging of the sensing element and guarantees outstanding longterm stability.Installed into a duct a small flow of air will be established by con-vection through the probe into the transmitter housing and backinto the duct. Inside the transmitter housing the air will diffusethrough a membrane into the CO2 sensing element. The operation in closed loop air stream avoids pollution of theCO2 sensor.Measuring ranges of 0...2000ppm and 0...5000ppm correspond toan analogue interface of 0 - 5/10V or 4 - 20mA. Selectively a switching output with adjustable switching point and hysteresis is available. The instruments can be easily positioned in the duct with the standard mounting flange.Measuring ValuesCO2Measurement principle Non-Dispersive Infrared Technology (NDIR)Sensing element E+E Dual Source Infrared SystemMeasuring range 0...2000ppm / 0...5000ppm Accuracy at 20°C (68°F) 0...2000ppm: < ± (50ppm +2% of measuring value)and 1013mbar 0...5000ppm: < ± (50ppm +3% of measuring value)Traceable to international standards, administrated by NIST, PTB, BEV...Response time t63 1) < 120sTemperature dependence typ. 2ppm CO2/°CLong term stability typ. 20ppm / yearSample rate ca. 30sOutputsAnalogue Outputs0...2000ppm / 0...5000ppm 0 - 5V -1mA < IL < 1mA0 - 10V -1mA < IL < 1mA4 - 20mA RL < 500 OhmSwitching OutputMax. switching voltage 50V AC / 60V DCMax. switching load 1A at 50V AC 1A at 24V DCMin. switching load 1mA at 5V DCContact material Ag+Au cladGeneralSupply voltage SELV 24V AC ±20% 15 - 35V DC SELV = Safety Extra Low VoltagePower requirement < 3WWarm up time 2) < 5 minHousing / protection class PC / housing: IP65, probe: IP20Cable gland M16 x 1.5 cable Ø 4.5 - 10 mm (0.18 - 0.39”)Electrical connection screw terminals max. 1.5 mm2 (AWG 16)Electromagnetic compatibility EN 61000-6-3 ÖVE EN61326-1+A1+A2:05.2002EN 61000-6-1 FCC Part 15 ICES-003 ClassBWorking temperature and conditions -5...55°C (23...131°F) 0...95% RH (not condensating)Storage temperature and conditions -20...60°C (-4...140°F) 0...95% RH (not condensating)1) minimum flow speed 1m/s (200ft/min)2) warm up time for performance according to specificationEE85EE85 SeriesEE85 Seriesbuilding management for residental and office areasventilation controlvery simple installationcompact housingauto-calibrationtraceable calibrationmeasuring ranges: 0...2000ppm or 0...5000ppmanalogue or switching outputCO2 Transmitter and Switches for Duct MountingTTypical ypical AApplicapplicationstions FFeaeaturturesesTTecechnical Dahnical Datatav1.3EE85103CO2 (C) 50mm (2)200mm (5)MODEL0...2000ppm (2)0...5000ppm (5)MEASURING RANGE OUTPUTEE85-PROBE LENGTH(see dimensions “A”)0 - 5V (2)0 - 10V (3)4 - 20mA (6)switching output (S)Dimensions (mm)Dimensions (mm)Connection DiaConnection DiaggrramamOrOrdering Guidedering Guide OrOrder Exampleder ExampleEE85-5C35measuring range: 0...5000ppmmodel: CO2output: 0 - 10Vprobe length: 200mmEE85OperOperaation Principletion PrincipleCO2 sensing elementair flow directionSealA...according to ordering guideØ12(0.47”)80(3.15”)80(3.15”)37.2 (1.46”)AmAEE85-xC2/3xAnalogue OutputsEE85-xC6xSwitching OutputEE85-xCSxswitching offppm20001000500relay statusswitching onONOFFHysteresis [% of MR]Level [% of MR]25% of MR