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.

Downloads

S-PB-4.8069.2-1_Catalog_sheet_DAF94_EN.pdf
4.8069.2-1_Datasheet_DAF94_EN.pdf
4.8069.3-1_Functional_description_DAF94_EN.pdf
3.3312.7_Views_DAF94_DE.pdf



Product e-mail request