LST Smoke Alarm 2351TEM User Manual

Optical-Thermal Detector  
2351TEM  
• Addressable conventional technology  
• Combination of optical and thermal  
characteristics of fire  
• Drift compensation  
• Sensitivity selectable in 3 steps  
• Addressing by means of address  
module or detector parameterisation  
• Function testable with Remote Test  
Unit ECO1000RTU  
Description  
The Optical-Thermal Detector 2351TEM uses both the  
scattered light principle as well as a separate thermal  
detection unit. It was developed to detect the charac-  
teristics of fire in a wide range of applications, and to  
avoid deceptive alarms. The modern design of both  
measurement systems and the analysis of the parame-  
ters by means of a special algorithm allow to reliably  
evaluate the characteristics of fire. This makes it an  
all-rounder that is used in virtually all fields of fire de-  
tection.  
detector addressing can be achieved in 2 ways:  
• A detector with an Address Module NG58-1 can be  
individually identified 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 Pro-  
gramming and Test Unit S300RPTU can also be used  
to set and display the following detector parameters:  
• the sensitivity in 3 levels,  
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.  
• the detector address, and  
• the date of the previous maintenance.  
Furthermore, the degree of drift compensation (de-  
tector contamination) and the current condition of the  
detector can be read out.  
The thermal sensor complies with Class A1R accor-  
ding to EN 54-5. The detector can therefore be used in  
rooms with a maximum height of 7.5m.  
The detector can be attached to various detector ba-  
ses and it can be protected against theft.  
Addressable conventional technology is used for alarm  
transmission to the fire detection control panel. The  
Building Safety. Building Security.  
A
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2351TEM_DBL_LST_EN_0850.PDF • PAGE 1  
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