Siemens Cerberus DO1101A-Ex, Cerberus DT1101A-Ex, Cerberus DT1102A-Ex Technical Description

Cerberus® DO1101AĆEx,
DT1101AĆEx, DT1102AĆEx
Wide spectrum smoke detector,
collective
Heat detectors, collective,
intrinsically safe

Technical description

Fire & Security Products

Siemens Building Technologies Group

Data and design subject to change
without notice. / Supply subject to
availability.
E Copyright by
Siemens Building Technologies AG

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1 Brief overview 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Characteristics 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Design 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Technical data 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Principle of operation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Environmental influences 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Influence of the ambient temperature 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Other influencing variables 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Application 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Compatibility 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Alignment functions 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 Application 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.4 Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 Commissioning 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 Maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.1 Functional check 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2 Overhaul 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 On-site measurement with the DZ1194 detector test set 7. . . . . . . . . . . . . . . . .

8 Terms 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fire & Security Products
Siemens Building Technologies Group

I

06.2001

II

Fire & Security Products
Siemens Building Technologies Group

06.2001

1 Brief overview

OptoRex DO1101-Ex ThermoRex DT1101-Ex / DT1102-Ex

Dimensions

Ø 115

47...70

With base DB1101

1.1 Characteristics

For applications in explosion-hazard areas of zones
1 and 2

Balanced response behavior and wide range of ap­plications

High reliability and stability through new, high-quali­ty optoelectronic sensor system and fully automatic
manufacturing and inspection processes

High degree of reliability and long-term stability
High resistance to:

Electromagnetic interference (EMI) intelligently designed
circuit

Soiling, temperature fluctuations, humidity and corrosion
achieved through custom developed, protective circuit board
coating

Together with detection line coupler and shunt Zener barrier ,
compatible with Cerberus control units with collective signal
evaluation

Manufactured in state-of-the-art SMD technology
Bayonet fitting for connection to base simplifies detector re-

placement
Comprehensive range of detector base accessories for spe-

cial applications

Dimensions

Ø 115

47...70

51

With base DB1101

For applications in explosion-hazard areas of zones
1 and 2

Heat detectors to meet the highest requirements

DT1101-Ex class A1R heat detector with wide applica-

tion range (up to +50°C)
DT1102-Ex class BR heat detector for high ambient

temperatures (up to +70°C)

Response behaviour immune to deceptive phenom­ena with rapid and slow increase in temperature
through:

Intelligently designed differential characteristics
Precise maximum temperature alarm activation with

quality thermosensor

54,5

Fire & Security Products
Siemens Building Technologies Group

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