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Fire & Security Products
Siemens Building Technologies Group
06.2001
1 Brief overview
1.1 Characteristics
For applications in explosion-hazard areas of zones
1 and 2
Balanced response behavior and wide range of ap-
plications
High reliability and stability through new, high-quali-
ty optoelectronic sensor system and fully automatic
manufacturing and inspection processes
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 phenom-
ena with rapid and slow increase in temperature
through:
Intelligently designed differential characteristics
Precise maximum temperature alarm activation with
quality thermosensor
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
51
47...70
Ø 115
With base DB1101
Dimensions
54,5
47...70
Ø 115
With base DB1101
Dimensions
OptoRex DO1101-Ex ThermoRex DT1101-Ex / DT1102-Ex
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