Fuel Station ATG Solution by Face of Art Technologies
Automatic Tank Gauging (ATG)
An automatic tank gauge (ATG) is an electronic device, whose basic function is to monitor the fuel level in the tank over a period of time to see if the tank is leaking. It can also tell the facility operator what is going on inside the tank (example: fuel level, volume and temperature, water level and volume, high and low fuel level warnings). Other features can be added to the ATG so that it can perform useful functions such as monitoring the interstitial spaces in tanks and piping, monitoring pressurized piping, or communicating remotely.
Components of an Automatic Tank Gauging System:
An ATG uses probes located in each tank or compartment to measure fuel and water levels. Each probe consists of a long rod with floats or sensors. The position of the floats tells the ATG console how much fuel and water are present in the tank. The probe rod also has thermistors to measure the fuel temperature. A console is typically located inside the facility building, and can include a display, a keypad, a printer, status lights, and a beeper that signals alarm conditions. An ATG system may also be connected directly to a computer.
Other Useful Automatic Tank Gauging Functions
Besides leak detection, other key information that an ATG can provide includes:
• Ullage Volume versus 90% Ullage. Ullage is the amount of empty space left in the tank.
For example, an 8,000-gallon tank with 5,000 gallons of fuel has an ullage volume of 3,000
gallons. Ninety percent ullage is the ullage minus 10% of the tank capacity. The 90%
ullage volume is the amount of fuel that should fit in the tank without triggering the
overfill prevention device. The 90% ullage number can be used to determine the amount
of fuel to order.
• Gross versus Net Volume. Gasoline changes volume quite dramatically with temperature.
For example, 10,000 gallons of gasoline will change in volume by 7 gallons with a
temperature change of 1°F. The gross volume is the actual volume of fuel at whatever
temperature it happens to be. The net volume is the amount of fuel that WOULD be in
the tank IF the temperature of the fuel were 60° F. The gross volume is the number to use
for inventory control purposes.
- Software simulators of ATG systems (probes)
- API for developers in various programming languages:
- C and C++
- Visual Basic 6.0
- Visual Basic .NET
- Description of communication protocol with PTS controller
Features & Functions:
?8.0 inch real colorful screen
?Monitor product level, water level, temperature, product volume, ullage
?Max quantity of tanks: 16
?Support tank tilt compensation and can input water level of dead zone
?Monitor delivery and generate delivery report automatically
?Leak detection function: support 0.1gph and 0.2gph
?Sound-light alarm: high/low level alarm, high water alarm
?All kinds reports stored in memory for future queries
?Tank table: input all points
?Generate tank table
?Anti-theft function during non-working time
?Set up fuel list and color according to need
?Density monitoring (optional)
?Interface: two RS-232 serial communication ports (one can support RS-485), one Ethernet port and one USB port
?Support relay output
?Upgrade through USB disk
?Integrate leak detect sensors(optional)