Zeta intrinsically safe programmable heat detector | black | EN 54-5, IP44

The Zeta ZIS-PHD detects a fire hazard in rooms where a rapid rise of temperature may occur in the first phase of a fire or where the temperature may exceed a danger level. It can be programmed as a fixed temperature or a fixed/rate-of-rise heat detector, and the EN 54-5 sensitivity class can be chosen: A1R, A1S, BR or BS. The detector is spark proof, so it can be used in explosion hazard areas; it operates on Zeta fire alarm detector lines behind a suitable spark-proof separator (barrier). An electronic unit with a measuring thermistor follows temperature changes and in alarm signals the control panel and lights the detector LED; in a hard-to-reach place an external alarm indicator (WZ-31) can be added. The detector has its own housing with two cable glands and needs no separate base; the class is set with jumpers inside the housing. According to the datasheet the detector (TUN-38Ex) holds ATEX certificate KDB 04ATEX190X, marking II 2G EEx ib IIC T6. Supply 17–24 V, IP44, dimensions 112 × 72 × 55 mm.

Key features

• Fixed temperature or rate-of-rise (programmable)
• EN 54-5 class A1R, A1S, BR or BS
• Spark proof – for explosion hazard areas
• ATEX II 2G EEx ib IIC T6 (datasheet)
• Own housing with 2 cable glands, no base needed
• IP44, black

Technical data