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Sitemaster SMC8A16Dg10R monitors up to 16 (more with add on cards- see below) normally open/normally closed alarm contacts such as a thermostat, pressure sensor, magnetic door contacts, valve position proximity switches etc., and has 10 form A relay contacts that can be programmed to act in conjunction with any monitored device--thus if A happens then a relay turns B on and C off (or if A and D happen, then turn B and C on) etc.

To view the specifications and data sheets: http://www.alarmpanels.com/

The Sitemaster also has the ability to accept up to 8 analog signals (4-20ma, 1-5V) which in this case are connected to the ultrasonic level sensors in up to 7 of the tanks with the eighth used to indicate outside air temperature at the site (of course, the analog signals could be used for pressure, voltage, amperage etc. sensors). In this case, the Sitemaster was set up to monitor the levels of 1 to 7 tanks at each site with readouts in feet, auto-calculated gallons and tons with each site being polled at 8am, 12noon and 6pm with details stored in the database which is available to everyone on the main office LAN. In the event of an alarm on any monitored point, a fax detailing the "nameplate" of that problem (such as no air in a particular tank at a time when it is scheduled to be there) is sent to the main office (if night time alarms must be handled, a pager could also be called-alerting the recipient to get on his laptop and see what it is).

The Visi-Con Division of Visicomm Industries offer an extensive product offerings including state of the art Annunciators, Alarm Systems, Audio Visual Alarm Panels, Telehone Dialers and remote monitoring.

Visicomm Industries manufactures, sells and rents a broad range of rotary and solid state design frequency converters and changer products from 1KVA to 2000KVA. A frequency converter can be single or three phases and also change voltage thus functioning as a power converter from 60Hz to 50Hz, from 50Hz to 60Hz and from 50 / 60 Hz to 400 HZ and can be used for continuous duty or testing products designed for export.