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Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing

    Buy cheap Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing from wholesalers
     
    Buy cheap Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing from wholesalers
    • Buy cheap Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing from wholesalers
    • Buy cheap Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing from wholesalers

    Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing

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    Brand Name : ANYO
    Model Number : LHI778
    Price : Negotiation
    Payment Terms : L/C, T/T
    Supply Ability : 50000pcs per day
    Delivery Time : 8-10 work days
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    Dual Element Passive Infrared Motion Sensor / PIR Motion Sensor LHI778 With TO-5 Housing

    Dual element passive PIR motion sensor LHI778 with TO-5 housing


    Description:

    PIR sensors are more complicated than many of the other sensors explained (like photocells, FSRs and tilt switches) because there are multiple variables that affect the sensors input and output.

    The PIR sensor itself has two slots in it, each slot is made of a special material that is sensitive to IR. The lens used here is not really doing much and so we see that the two slots can 'see' out past some distance (basically the sensitivity of the sensor). When the sensor is idle, both slots detect the same amount of IR, the ambient amount radiated from the room or walls or outdoors. When a warm body like a human or animal passes by, it first intercepts one half of the PIR sensor, which causes a positive differential change between the two halves. When the warm body leaves the sensing area, the reverse happens, whereby the sensor generates a negative differential change. These change pulses are what is detected.


    The IR sensor itself is housed in a hermetically sealed metal can to improve noise/temperature/humidity immunity. There is a window made of IR-transmissive material (typically coated silicon since that is very easy to come by) that protects the sensing element. Behind the window are the two balanced sensors.


    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 noise at steady state and temperature changes.


    Parameters:

    Min.TypicalMax.UnitsCondition
    Element size2*1mm22 elements
    Responsivity33004000V/W100℃, 1Hz
    Match110%
    Noise2050μVpp25℃, 0,3...10Hz
    Offset voltage0.21.55VRs=47kΩ, 25℃
    NEP7.5*1028*10

    W✓Hz

    1Hz Bw, 100℃,1Hz
    D*5*1019*10cm✓Hz/W1HzBw, 100℃,1Hz
    Output impedance51047kΩ Load Res.
    Operating voltage215VRs=47kΩ, 25℃
    Operating temperature-4085non permanent
    Storage temperature-4085non permanent

    Dimension:(mm)


    Frequency response:

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