The Zeta ZIS-OSD is an intrinsically safe conventional optical smoke detector for installation in explosion hazard zones. It is designed to detect visible smoke at the start of a fire's smouldering stage, generally long before open flame or a noticeable rise in temperature. It operates on Zeta fire alarm system detector lines behind a suitable spark-proof separator and is fitted to the ZIS-40 base.
Key features
- Intrinsically safe: ATEX certificate KDB 04ATEX190X, II 2G EEx ib IIC T6
- Tyndall effect optical chamber measuring infrared light scattered by smoke particles
- Analogue compensation for changes in atmospheric pressure, temperature and humidity
- Built-in self-regulating digital system keeps sensitivity constant as dirt builds up, and signals when cleaning is needed
- Replaceable optical chamber that can be cleaned or replaced
- Designed for closed spaces where smoke, dust and steam condensation are not normally present
Technical specifications
- Part no.: 84-100
- Voltage: 12 to 28V
- Monitoring current: 60µA max
- Alarm current: 20mA
- Detectable test fires: TF1 to TF5 and TF8
- Operating temperature: -25°C to +55°C
- Relative humidity: up to 95% at 40°C
- Colour: black
- Dimensions with base: 115mm dia. x 54mm
- Weight: 0.15kg
- Base: ZIS-40 (required)
