Event notification system and wet well monitor
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United States of America Patent
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Mar 21, 2006
Grant Date -
Oct 2, 2003
app pub date -
Mar 26, 2003
filing date -
Mar 27, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An alarm detection device for monitoring high level signal in a wet well. The alarm detection device includes a fail safe circuit and an emulation circuit. The incoming high level signal is fed into the fail safe circuit and the emulation circuit. The emulated signal from the emulation circuit is fed to an output to a control panel and an alarm system. If there is any problem with the alarm detection device, the fail safe circuit connects the incoming high level signal directly with the output to the control panel and a high impedance signal is generated for the alarm system. The alarm detection device is powered independently from the control panel.
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