IR-12.1
Dual-Band-
IR flame detector
The IR-12.1 dual-band infrared flame detector detects flickering open flame fires involving carbon using the flicker and spectral line of CO2.
The device works well on open flames with smoke.
It does not respond to sunlight, incandescent lamps (continuous/modulated), fluorescent tubes, flying sparks, electric arcs, hydrogen flames, steady flames without flickering and metal fires.
The dual-band sensor compensates for ambient radiation, making the detector very insensitive to other IR sources.
IR-12.1 has relay outputs (normally open) for faults and alarms
as well as internal monitoring of the operating voltage
and an integrated test device.
IR-12.1 – data and fakts
| Operating voltage |
18…30 VDC
|
| Operating current at 24V |
< 250µA
|
| Viewing angle (without / with ventilation) |
approx. 50° / 35°
|
| Temperature range |
-20…+70° C
|
| Dimensions (without / with ventilation) | 98 x 64 x 36/54 mm |
| Weight (without / with ventilation) | 240g / 290 g |
| Sensitivity (set to 2cm gas flame from 3mm pipe, 30% Prop., 70% But.) End of line resistance (activated via BR5=ON) |
flame 80cm <1s 4,7 KΩ |
| Alarm pulse (without latching) Reaction time Response delay (adjustable) |
ca. 2 s 25 ms 0,5 s / 1 s / 2 s / 5 s / 10 s |
Options and special features
|
Very high insensitivity to IR sources without spectral CO2 peak
Integrated relay outputs (normally open) for fault and alarm
Internal monitoring of the operating voltage, fault at Ub < 16.5VDC
Integrated test device
Optionally available with air purge IR-12.1.LU |
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