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Rod-Temperature Fire Detector, Type: DAF94-...-..

P/N: 80232
Produktbild - Rod-Temperature Fire Detector

 
 
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Description

The Rod-Temperature Fire Detector reacts to absolute temperature as well as to temperature rise and thus combines the positive performance characteristics of conventional heat sensitive detectors and differential detectors.

The Rod-Temperature Fire Detector operates according to so-called principle of differential expansion principle. It consists of a preformed concave or convex contact system with low coefficients of expansion housed inside a feeler tube whose coefficients of expansion are high . The contact system is anchored to the fronted of the feeler tube.

When heated, then yields a different linear expansion, which leads to the clamping of the contact system, and thus depending on the type for closing or opening of the contacts. The response level (60°C/ 71°C / 88°C / 107°C / 135°C / 162°C) is preset by the factory.

The alarm is the earlier, the faster the temperature rise.

Through a balanced design, the system is tuned so that through immediate, harmless temperature effects (e.g. as warm air when opening an oven door) no alarm is triggered.

 
 
Technical data

 Dimensions (h x w x d)265 mm x 135 mm x 81 mm
 Housing materialaluminum
 Material temp.sensing elementstainless steel
 Weight1.2 kg
 Protection typeIP 54
 Ambient temperature-35 °C to 85 °C
 Case finishRAL 7001
 Max. contact load48 V DC / 0.5 A

 

 

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