LST 2351E User Manual
Description
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Building Safety. Building Security.
Description
The Optical Smoke Detector 2351E uses the scattered
light principle, and was developed for the detection of
smoke particles in a wide range of fi re detection applica-
tions. The modern design of the measurement chamber
allows to reliably evaluate the characteristics of fi re.
An internal drift compensation adjusts the alarm thres-
hold by continually evaluating the contamination of the
detector. With that, the sensitivity of the detector is kept
constant for a long time.
Addressable conventional technology is used for alarm
transmission to the fi re detection control panel. The de-
tector addressing can be achieved in 2 ways:
• A detector with an Address Module NG58-1 can be
individually identifi ed by the suitable control panel.
• An address, which has been stored in the detector by
means of the Remote Programming and Test Unit, is
displayed on the Zonal Display Unit S300ZDU.
A test activation of the detector can be carried out
using the Remote Test Unit ECO1000RTU. In addition to
the test activation of the detector, the Remote Program-
ming and Test Unit S300RPTU can also be used to set
and display the following detector parameters:
• the sensitivity in 3 levels,
• the detector address, and
• the date of the previous maintenance.
Furthermore, the degree of drift compensation (detec-
tor contamination) and the current condition of the de-
tector can be read out.
The detector can be attached to various detector bases
and it can be protected against theft.
• Addressable conventional technology
• Sensitivity selectable in 3 steps
• Addressing by means of address
module or detector parameterisation
• Remote readout of detector condition
• Extremely fl at design
• Function testable with Remote Test
Unit ECO1000RTU
Specifi cations
Operating voltage
Supply through the detector line voltage
Current consumption
typ. 75µA (quiescent)
Ambient temperature
-30°C to +70°C
Relative humidity
5 – 95% (no condensation)
Dimensions ш Ч H
102 × 32.5 (mm)
Colour
cream
Weight
75g
Approval
VdS G202012
Order number
241040
Order name
Optical Smoke Detector/Conv./300/SS 2351E