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2251CTLE_DBL_LST_EN_0850.PDF • PAGE 2
ABuilding Safety. Building Security.
Specifi cations
Operating voltage Supply through loop voltage
Current consumption max. 300µA (quiescent)
Alarm temperature 58°C (maximum principle)
Infrared sensor
Optical wavelength 800 – 1200nm
Measurement range 0 – 450µW/cm
2
Measurement range CO-sensor 0 – 500ppm
Operating temperature max. +45°C
Ambient temperature -20°C to +55°C (no condensation or icing)
Relative humidity 15 – 90% (no condensation)
Dimensions ø × H 102 × 60 (mm)
Colour cream
Weight 130g
Approvals VdS G207054
0832-CPD-0518
Order number 241051
Order name Optical Thermal CO IR Detector/Anal./200/SS 2251CTLE
The infl uence of contamination on the optical measu-
rement system is compensated for by using intelligent
evaluation algorithms. With that, the response sensiti-
vity of the detector is kept constant for a long time –
a further effective step to avoid false alarms.
The response sensitivity of the detector can be individu-
ally adjusted in 5 steps between 1.5%/m and 4.2%/m
according to the application. In addition, the detector
adjusts the response thresholds of the individual de-
tection units dynamically, depending on their measured
values, changes the evaluation of the criteria, or speeds
up respectively delays the alarm activation. This evalu-
ation logic allows the multi-criteria detector to reliably
distinguish between emerging fi re and noise variables.
A thermal-only operation of the detector is also possib-
le. In that case the application of the detector is limited
to rooms which are not higher than 7.5m.
The proven ADM loop technology with System Sen-
sor/200 protocol establishes a permanent communica-
tion between the fi re detection control panel and the
detector. That ensures a periodical function testing of
the detector.
The detector address is selected with two decadic ro-
tary switches. Therefore the detector can be changed
quickly and without additional tools.
A detector function test can be conveniently conducted
using a magnet. The detector can be attached to dif-
ferent types of bases and it can be protected against
theft.