PIR H313S

General Description

The RE 200B is a passive infrared sensor designed to pick up heat radiation of wave lengths

in a band around 10 microns. It contains two active elements configured as balanced diffe-rential series opposed type. This results in good compensation of environmental temperature

and excellent sensitivity for small changes of a spatial temperature pattern. Thermal signals

far below one microwatt are sufficient to trigger a sufficient output voltage change

Functional Description

If the active elements of the PIR sensor are exposed to a change in the surrounding

temperature field, electrical charges are separated within the sensor elements. The voltage

across the sensors controls a J-FET source follower impedance converter and thus

modulates the output current of the PIR detector

The spectral sensitivity of the sensor is controlled by the optical transfer characteristics of

the window in the case and has been optimized to pick up radiation of the human body

Operating Conditions

Operating Temperature -20 ˚C to +70˚C

Storage Temperature -30˚C to +80˚C

Operating Voltage 3 to 10 V at Rs = 47 kΩ

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