User's Manual

Installation Manual the Passive Infrared Reader (PIR) 10-1
The
Passive Infrared Reader (PIR)
PIR Specifications
 Power Requirements
 Temperature
 PIR Specifications
 Weight
 Positioning the PIR
 Mounting the PIR
Power Requirements
 Connecting the PIR
 Adjusting the PIR beam angle
12V DC; contact rating: 100 mA @ 24V DC
 PIR “Masking”
Passive Infrared Readers (PIRs) (Figure 10.1) are
sensitive to changes in infrared energy caused by
an object moving across a PIR’s field of view.
Detection depends on the difference between the
infrared energy trasmitted by the moving object
and the temperature of background objects.
Temperature
A PIR operates best in an ambient temperature
between 35 and 90 degrees Fahrenheit.
Operation outside of this range may cause
unexpected or undesirable results, including
premature failure.
The PIR Accutech provides (DSC Bravo Series)
is for indoor use only. Its intended use is to
detect movement through doors, corridors, and
passageways. The relay contacts provided by the
PIR (which control detect validation) can be set
to trigger on programmable timer between a
duration of 1 to 7 seconds.
Weight
A PIR weighs approximately 2.8 ounces.
A typical use for a PIR is a hallway, where there
is no door to mount a Magnetic Switch to, or an
elevator, where placing anything on the door or
frame of the car might be undesirable.
Figure 10.1 The Passive Infrared Reader (PIR)