LST 2351TEM User manual

Brand: LST

Model: 2351TEM

Type: User manual

LST 2351TEM

The LST 2351TEM is an optical-thermal detector that combines the scattered light principle and a separate thermal detection unit. It is capable of detecting both visible and invisible fire characteristics, making it an excellent all-rounder for various fire detection applications.

Thanks to its advanced measurement systems and specialized algorithm, the LST 2351TEM can reliably evaluate fire characteristics, minimizing the risk of false alarms. Its internal drift compensation feature adjusts the alarm threshold based on contamination levels, ensuring consistent sensitivity over time.

LST 2351TEM

2351TEM_DBL_LST_EN_0850.PDF • PAGE 1

ABuilding Safety. Building Security.

Optical-Thermal Detector

2351TEM

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 ﬁ re 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 ﬁ re. This makes it an

all-rounder that is used in virtually all ﬁ elds of ﬁ re de-

tection.

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 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.

Addressable conventional technology is used for alarm

transmission to the ﬁ re detection control panel. The

detector 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 Pro-

gramming 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 (de-

tector contamination) and the current condition of the

detector can be read out.

The detector can be attached to various detector ba-

ses and it can be protected against theft.

• Addressable conventional technology

• Combination of optical and thermal

characteristics of ﬁ re

• Drift compensation

• Sensitivity selectable in 3 steps

• Addressing by means of address

module or detector parameterisation

• Function testable with Remote Test

Unit ECO1000RTU

2351TEM_DBL_LST_EN_0850.PDF • PAGE 2

ABuilding Safety. Building Security.

Speciﬁ cations

Operating voltage Supply through the detector line voltage

Current consumption typ. 85µA (quiescent)

Alarm temperature typ. 58°C (maximum-heat component)

Operating temperature max. +45°C

Ambient temperature -30°C to +70°C

Relative humidity 5 – 95% (no condensation)

Dimensions ø × H 102 × 43 (mm)

Colour cream

Weight 75g

Approval VdS G202018

Order number 241041

Order name Optical-Thermal Detector/Conv./300/SS 2351TEM

LST 2351TEM User manual

Brand: LST

Model: 2351TEM

Type: User manual

LST 2351TEM

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LST 2351TEM User manual

LST 2351TEM User manual

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