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Considerations when designing a water detection system
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Considerations when designing a water detection system

Source: www.nbpie.com www.nbpaili.com  Author: Ningbo Paili Electronic Technology Co.,Ltd.  Time: 2014-01-10

 

  A number of factors need to be taken into account when designing a water diction system. Failure to do so could lead to systems not detecting water when required to do so.

  1) The uses of an alternating current (AC) not direct current (DC) in the sensors. Direct Current will erode the sensors if left in water for long periods leaving the system unusable for any subsequent alarms.

  2) Sensitivity adjustment to allow damp areas or condensed water from AC units to be ignored, but still allow large leaks to be detected.

  3) Zone cross talk leading to false alarms or wrong location caused by one signal from one zone using Earth (floor jacks, conduit etc.) to interfere with other zone causing one or both zones to go into alarm without the presents of any water.

  4) Quick sensor recovery after a water leak. Detection cables and spot probes should be capable of being removed and wiped with a cloth or tissue paper to remove water allowing the zone to quickly reset.

  5) Sensitivity of the sensors, electrodes too close to each other in both water detection cable and spot probes will cause false alarms due to condensation or water droplets.

 

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