820-0003
IPES IR3 Flame Detector
Operating Manual
Page
12
of
37
Elimination of False
Alarms
False alarms from detectors used for industrial applications can cost productivity in down time. This is especially noted for
automated systems and processes.
Conversely, failure to generate an alarm can have catastrophic results.
The combination of microp
rocessor, algorithms, multiple sensors and wavelength range settings makes the IPES‐IR3 an
excellent choice for elimination of false positive indicators caused by non‐flame source
s of radiation such as artificial
lighting, direct and indirect sunlight, lightning, electrical arcs, radiation (nuclear), arc welding and metal grinding.
An Alarm condition will normally override a Fault condition unless a loss of operating power impairs the detector’s ability t
o
generate or maintain an alarm. The IPES‐IR3 reports
both Fault and Alarm conditions exclusive of each other. This means
both a Fire and Fault can be reported at the same time if they occur simultaneously.
Serviceability
The IPES‐IR3 remains serviceable in non‐heated rooms or under sheds at temperatures fr
om
–
40°F to +185°F (
–
40° to
+85°C).
LED
Normal, Fire and Fault conditions are indicated by status LEDs located on the cover. Refer to Table 5
‐
1: Determining
LED Conditions.
Optical Integrity
To maintain reliability of the IPES
‐
IR3, the optical devices are automatically self
‐
tested for radiation transmission
every 25 to 45 minutes. This routine test does not require the use of a test lamp. This test determines whether any
dust or other contamination has formed on the detecting windows which would scatter the infrared radiation.
