LST 2251TEM User's Manual
Contents
1. Multisensor 2251 TEM e ADM loop technology with System Sensor 200 protocol e Combination of optical and thermal characteristics of fire e Two self learning and three fixed sensitivity levels e Thermal only operation e Constant response sensitivity e Function testable with magnet The addressable Multisensor 2251TEM uses 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 fre The sensitivity of the detector can be individually adjus ted in 5 steps between 1 5 m and 5 2 m according to the application Three steps have a fixed sensitivity whereas two self learning steps automatically adjust the sensitivity to short term changes of the environmental conditions Furthermore the optical detection unit can be completely disabled for a thermal only operation The proven ADM loop technology with System Sen sor 200 protocol establishes a permanent communi Building Safety Building Security cation between the fire detection control panel and the detector That ensures a periodical function testing of the detector The influence of contamination on the optical measu rement system is compensated for b2. Security a O LABOR STRAUSS SICHERUNGSANLAGENBAU GMBH A 1231 WIEN WIEGELESTRASSE 36 TEL 43 1 52114 0 FAX 43 1 52114 27 OFFICE LST AT WWW LST AT ALL RIGHTS RESERVED 2251TEM_DBL_LST_EN_0819 PDF PAGE 2
3. y using intelligent evaluation algorithms With that the response sensitl vity of the detector is kept constant for a long time a further effective step to avoid false alarms The two LEDs with 360 visibility indicate the activated condition of the detector The detector address is se lected with two decadic rotary switches thus allowing to change the detector without additional tools A detector function test can be conveniently conducted using a magnet The detector can be attached to va rious bases and it can be protected against theft 9 pemu p L VdS LABOR STRAUSS SICHERUNGSANLAGENBAU GMBH A 1231 WIEN WIEGELESTRASSE 36 TEL 43 1 52114 0 FAX 43 1 52114 27 OFFICE LST AT WWW LST AT ALL RIGHTS RESERVED 2251TEM_DBL_LST_EN_0819 PDF PAGE 1 Operating voltage Supply through loop voltage Current consumption typ 250uA quiescent Alarm temperature 57 C maximum heat component Operating temperature max 45 C Ambient temperature 20 C to 60 C no condensation or icing Relative humidity 10 93 no condensation Dimensions x H 102 x 45 mm Colour cream Weight 115g Approvals VdS G201041 At operation in thermal only mode EN 54 5 Class A1R 57 C maximum and rate of rise activation Room height max 7 5m Order number 241020 Order name Optical Thermal Detector Anal 200 SS 2251TEM Building Safety Building
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