VarioFox - Tank Management System
Nowadays it is hard to imagine complex logistics, production and maintenance processes without efficient communication technologies in areas where production processes have to be run permanently at an optimum rate. But smaller and medium sized companies in particular do not necessarily require network supported process visualization or even 24 hour round the clock manned supervision. For example: A 30000 litre tank contains Diesel fuel oil and an indication of the actual oil level is required locally at the tank fillpoint. A combined audible and visual alarm is required as soon as the oil level drops below 250 litres and a solenoid valve must close when the oil level reaches 25000 litres. At the same time, the oil level and alarm status needs to be monitored at any time on a remote PC which is located some 23 miles away.
he VarioFox Indication/Control Instrument from AFRISO was developed for simple applications of this kind, is easy to operate and in conjunction with the AFRISO Event Reporting System EMS 442 and web-service www.afriso-net.com or GSM system for monitoring by mobile phone forms a completely independent measurement and control station with remote monitoring possibilities.
The VarioFox Indication/Control Instrument is a compact, ready-to-connect universal measurement and control instrument with integrated sensor supply and 2 or 4 voltage-free switching outputs.
The instrument is very easy to operate and to program due to its text-orientated menu guidance (English, German or French).
VarioFox features a measurement unit listing, where units can be freely edited, as well as a free scaling and calibration of start and end of scale display values (99.999 - 9999) which allows for almost all possible required parameter settings.
For horizontal cylindrical and spherical tanks integrated calibration charts can be accessed.
For non-linear vessels or specially fabricated tanks 24-point linearization is available.
The highest and lowest operational values are memorized but can also be utilized as instrument-internal visual and audible alarms on request.
An alarm mute/accept button on the front of the instrument requires the responsible operator to act and this in itself provides for additional operational safety.
VarioFox works off a 50-253Vac or 20-253Vdc supply and has an integrated sensor input (4-20mA, 0-20mA, 0-10V) and two isolated separate analogue outputs (4-20 and 0-10mA).
In conjunction with the relevant electronic transducers (pressure, temperature, level, humidity) or level switches, VarioFox provides the user with an easy and quick-to-install stand-alone measurement and control system for the indication/display, processing and the control of process parameters or events.
