Fire detection equipment

Citation

(1999), "Fire detection equipment", Pigment & Resin Technology, Vol. 28 No. 6. https://doi.org/10.1108/prt.1999.12928fad.007

Fire detection equipment

Fire detection equipment

Keywords: Zellweger, Fire

Zellweger Analytics recently launched two new items of fire detection eqipment. The first of these is its 5704F Fire Control Card, part of the company’s System 57 control family (Plate 3). It provides four zone inputs compatible with flame, smoke and heat detectors and manual call points.

Plate 3 Fire control card from Zellweger Analytics

The System 57 control unit has been designed for use throughout industry and a host of special features is thought to make it one of the most compact, flexible and cost-effective fire and gas control systems currently available. The Fire Control Card significantly adds to its current versatility, and fire and gas cards can be freely mixed in the same rack.

Each card clearly displays inhibit, fault and alarm for each zone via high intensity LEDs. The card also includes two independent line monitored alarm output circuits, with fault status indication for activation of field sounders and alarm lamps.

Also newly launched is the new SearchFlame 22 multi-spectral flame detector, Zellweger considers that this represents the new generation of electro-optical detectors. This is stated to be the flagship product from the new comprehensive range of Sieger brand fire detection products. According to its manufacturers, the detection system is designed specifically to detect hydrocarbon based fires.

The unit is said to combine the very latest infrared wide, near and narrow band technology with an additional visible radiation detector and allows the unit to analyse the widest spectrum of emissions. False alarm rejection is achieved by using advanced signal processing algorithms to analyse all the data from these sensors to provide performance suitable for the harshest environments.

On alarm, the detector is also reported to be able to store all of the pre-fire spectral data from the sensor array in a non-volatile memory for subsequent retrieval and evaluation. These data are invaluable when trying to determine the possible type and cause of the fire.

The detector has relay, analogue and RS485 digital outputs as standard and is available in 316 stainless steel or a copper-free aluminium version. The SearchFlame 22 is stated to be fully certified for use in hazardous areas by both European and American authorities.

Operating voltage is stated to be 24VDC and quiescent power consumption is 60mA. The detector can reportedly operate in temperatures from –40C to +85C and within a relative humidity band of 10 to 90 per cent. IP 66 ingress protection is standard. A field of view of 100 per cent horizontal by 100 per cent vertical at 75 per cent of the on-axis detection distance to provided and sensitivity settings can be set at 25, 50, 100 or 200 feet. The SearchFlame 22 comes complete with a stainless steel swivel mount.

Further details are available from: Zellweger Analytics Ltd. Tel: +44 (0)1202 676161; Fax: +44 (0)1202 678011.