LST 2251EIS User Manual

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DevicesforHazardousAreas

for the System Sensor/200 Loop

Optical smoke detector

Safety barrier with galvanic isolation

Protocol interface for communication with the fi re detection control panel

ATEX certifi ed

IS Optical Smoke Detector 2251EIS

fig. A

fig. B

fig. C

The addressable Intrinsically Safe Optical Smoke Detector 2251EIS (fig. A) uses the scattered light principle and was developed for the detection of smoke particles in hazardous areas. The modern design of the sensing chamber allows to reliably evaluate the characteristics of fire.

The proven ADM loop technology with System Sensor/200 protocol establishes a permanent communication between the fire detection control panel and the detector. That ensures a periodical function testing of the detector. In the control panel all types of fires are detected by continuously comparing fire patterns.

Intelligent evaluation algorithms use the current condition of the sensing chamber to predict the likely time

of the next maintenance. Thus the alarm threshold is automatically adjusted within the permissible range, depending on the contamination. With that, the constant response sensitivity of the detector is ensured for a long time.

The two LEDs with 360° visibility indicate the activated condition of the detector. The detector address is selected 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 or test gas. The detector can be protected against theft.

Specifi cations

Ignition protection

intrinsically safe

 

Ex classification

EEx ia IIB T5

 

Operating voltage

Supply through loop voltage

 

Current consumption at 24V

330µA

 

Ambient temperature

-25°Cto +70°C

 

Relative humidity

5 – 95% (no condensation)

 

Dimensions ø × H

103 × 43 (mm)

 

Colour

cream

 

Weight

110g

 

Approval

BASEEFA03ATEX0157X

 

 

LPCB 199m

 

Order number

241025

A

Order name

IS Optical Smoke Detector/Anal./200/SS 2251EIS

Building Safety. Building Security.

 

© LABOR STRAUSS SICHERUNGSANLAGENBAU GMBH • A-1231WIEN • WIEGELESTRASSE 36 • TEL +43 152114-0• FAX +43 152114-27

Ex-Sys200_DBL_LST_EN_0804.PDF• PAGE 1

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Safety Barrier Y72221

The Safety Barrier Y72221 (fig. B) is used for intrinsically safe electric circuits. The built-inzener barrier and the safe galvanic isolation allow the connecton of fire

detectors in hazardous areas. Due to the galvanic isolation, the earth leakage monitoring can remain activated in the fire detection control panel.

Specifi cations

Ignition protection

intrinsically safe

Ex classification

EEx ia IIC T5

Operating voltage

Supply through the detector line voltage

Ambient temperature

-20°Cto +60°C

Dimensions W × H × D

20 × 110 × 107.5 (mm)

Mounting

TS35 DIN rail

Colour

green

Weight

100g

Approval

BASEEFA Nr.: BAS00ATEX7087

Order number

228006

Order name

Safety Barrier/Anal./200/SS Y72221

Protocol Interface IST200

The Protocol Interface IST200 (fig. C) serves for the design of an intrinsically safe electric circuit in ADM loop technology. It allows the bidirectional data traffic between fire detection control panel and fire detectors in hazardous areas via an ADM loop with System Sen-

sor/200 protocol. The interface is always used together with the Safety Barrier Y72221. The Surface Mounting Box SMB500 is required for mounting the protocol interface.

Specifi cations

Ignition protection

intrinsically safe

Operating voltage

Supply through loop voltage

Current consumption at 24V

14mA

Ambient temperature

0°C to +60°C

Relative humidity

5 – 95% (no condensation)

Dimensions W × H × D (without attaching sheet)

70 × 70 × 32 (mm)

Weight

155g

Order number

228007

Order name

Protocol Interface/Anal./200/SS IST200

Building Safety. Building Security.

A

© LABOR STRAUSS SICHERUNGSANLAGENBAU GMBH • A-1231WIEN • WIEGELESTRASSE 36 • TEL +43 152114-0• FAX +43 152114-27

Ex-Sys200_DBL_LST_EN_0804.PDF• PAGE 2

OFFICE@LST.AT • WWW.LST.AT • ALL RIGHTS RESERVED