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NADRO/'7SX <br />System Operations <br />The SmartCover° system works by taking a distance measurement every 6 minutes <br />using the DSM (ultrasonic sensor). If the water is below the alarm level, the <br />SmartCover® logs every other distance reading and sends it to the historical server <br />every hour for long term trending. If the water level is above the alarm level, an <br />alarm notification is sent directly to the users. It is a 24 hour a day, 7 day a week <br />system. <br />Below is a typical graph from the City of Santa Ana secure web page. It can be <br />seen that everything is normal and then there is a high water level alarm. The <br />bottom of the sensor is 64 inches from the manhole cover and the alarm is set for 74 <br />inches below the manhole cover. <br /> 2012.05-04 1356 - 2012-05.12 13:56 Distance from Manhole Cover <br /> Alarm Setpoint = 74 Senso r Position = 64 <br />60 in <br /> <br />65 in ........... ...... ..................... » <br />....... <br />..... <br />......... <br />........ <br />-....... <br />....... <br />........ .. <br />........ <br />........... <br />..... <br /> <br />. <br />........ <br /> <br />..... <br />70 in <br />75 in ..» ....... ...... .....................»....... ..... ......... .. .... ........ ....... .......... ........ ......». <br />.. <br />..... <br />......... <br />..... <br />80 In <br />85 in <br />90 in <br />95 in <br /> <br />o S 8 o S S 8 0 S S 8 o <br /> $ $ o S 8 <br /> 8 8 8 <br /> <br />N N N N N N N N N N N N N N N N N N <br />.-i I.1 p'1 e-1 1'1 ^I .1 N nl .-1 .-1 PI N I-1 ..1 H rl ."1 <br />o n d, .b e n n. ob m d 6 6 d ti 1 N rv A <br />o a a 0 0 a O 0 a a 0 .+ .+ .-? .? .. <br />N ?fl Yl N A A v1 N N N N A A N Vf A Vl A <br />O O O O O O O O O O O O O O O O O O <br />The City of Santa Ana will receive alarms through cell phone or pagers via Short <br />Message Service (SMS), or Smart Phones and emails via email messaging. A <br />direct-from-satellite handheld system is available upon request for highly critical <br />communications in case of massive power loss upon request. <br />A LEVEL MEASUREMENT IS TAKEN EVERY 6 MINUTES AND UPDATES THE <br />DATA ON THE SERVER EVERY HOUR. IN THE EVENT OF A HIGH WATER <br />EVENT, THE ALARM IS SENT THE NEXT TIME A LEVEL MEASUREMENT IS <br />MADE. IN THIS CASE THE LONGEST TIME BETWEEN THE TIME THE WATER <br />REACHES THE ALARM LEVEL AND WHEN THE ALARM SOUNDS IS 5 <br />MINUTES AND 59 SECONDS. <br />Hadronex Inc. 381 Engel Street, Escondido, CA, 92026 <br />25E-20