China Lhi 778 PIR Sensor Big Window Infrared Sensor Dual Elements IR Detector

High Sensitivity Pyroelectric Infrared Detector Lhi778
SpecifactionModelLHi 778EncapsulationTO-5ElementSize/Type2.0mmx1.0mmxGap 1mmDualWindowMaterialSiWindowThickness0.5mmWindowSize3x4mmPassBand7-14μmTransmittance>72%Signal[Vp-p]>2.2V1.Blackbodytemperature420K(147˚C)
2.Modulationfrequency1HZ
3.Magnification72.5dBSensitivity4000V/WDetectivity1.5x108cmHz1/2/WNoCapacitor ise(Vp-p)<200mV(mVp-p)(25ºC)Balance<15%OperatingVoltage2-15VOperatingCurrent8.5-24μA(VD=10V,Rs=47kΩ,25ºC)SourceVoltage0.4-1.1V(VD=10V,Rs=47kΩ,25ºC)OperatingTemperature-40ºC-+80ºCStorageTemperature-40ºC-+80ºCFieldofView139°x139°
Working Principle
Pyroelectricinfraredsensorwouldchangechargewhenradiantenergychanges.Theeffectcanbeusedindetectingthechangeofinfraredradiant.Thesensorsapplytohumanmotiondetector,passiveinfraredburglaralarmandautomaticlightswitch.basedonthesametheory,thepyroelectricinfraredsensorappliestMachine Hardware ogasdetectionwithinfraredabsorption.The LHi 778 pyroelectric infrared-detector series are the standard dual element design recommended for all variants of motion control. They include a dual element pyro-electric ceramic element with Fet in source follower connection.LHi 778 detector is available in TO-5 housing with standard infrared filter. It provides high responsivity with excellent common mode performance (match) and low noisMachinery Stocks e at steady state and temperature changes..Feature
1. Lownoise,highdetection
2. Excellentcommonmodebalance-dualelements
3. To-39,To-5encapsulation
4. Applytobothnarrowandbroadbandfilters
5. Signalchannelordoublechannelspattern
6. Dual pattern applytoburglaralarmTypicalApplication
1. Passiveinfraredburglaralarm:stronganti-interferenceforstrongwithlightaSecurity & Protection ndelectromagneticradiation
2. Humanmotiondetector
3. HumanmotiondetectorofceilTime & Attendance ing
4. Gasanalysis
5. Non-contactinfraredmeasurement