Computerized dispenser tester

A leak detection system for use with a fuel dispenser, said leak detection system comprising:

• a fluid source controllably providing a pressurized fluid flow and operatively arranged for fluid communication with at least a portion of said fuel dispenser to enable the pressurization thereof;
• control means, operatively coupled to said fluid source, for controlling the pressurization of said at least a portion of said fuel dispenser;
• first means for determining the flow rate of the pressurized fluid flow provided by said fluid source;
• and
• processor means for providing an indication of the leakage condition of said at least a portion of said fuel dispenser based upon the flow rate determined by said first means which satisfies a pressurization condition for said fuel dispenser, said fluid source operable to controllably pneumatically pressurize at least one of a vapor recovery portion and a liquid dispensing portion of said fuel dispenser.

A system for use with a fuel dispenser, said system comprising:

• pressurization means for controllably pressurizing at least a portion of said fuel dispenser using a pressurized pneumatic fluid flow;
• control means for controlling the pressurization activity of said pressurization means;
• means for determining the leakage rate of said at least a portion of said fuel dispenser by measuring the flow rate of the pressurized pneumatic fluid flow which satisfies a pressurization condition for said fuel dispenser;
• and
• said pressurization means further comprising a means including a controllable valve assembly, for selectively operatively communicate the pressurized pneumatic fluid flow provided by said pressurization means to at least one of a vapor recovery portion and a liquid dispensing portion of said fuel dispenser.

An assembly operatively associated with a fuel dispenser, said assembly comprising:

• a fluid source controllably providing a pressurized pneumatic fluid flow;
• a coupling assembly, including a controllable valve assembly, arranged to enable fluid communication between said fluid source and at least a portion of said fuel dispenser;
• a sensor arranged to detect the flow rate of pressurized fluid provided by said fluid source;
• a controller, arranged for operative control of said fluid source and said valve assembly, to control the pressurization of said at least a portion of said fuel dispenser;
• and
• a processor to determine a leakage condition of said at least a portion of said fuel dispenser based upon the detected flow rate of pressurized fluid which satisfies a pressurization condition for said fuel dispenser, said coupling assembly operatively arranged to permit the pressurized fluid flow provided by said fluid source to selectively communicate with at least one of a vapor recovery portion and a liquid dispensing portion of said fuel dispenser.

A leak detection method for use with a plurality of fuel dispensers, said method comprising the steps of:

• pneumatically pressurizing a selectable one of a vapor recovery portion and a fuel dispensing portion of at least one of said plurality of fuel dispensers;
• controlling the pneumatic pressurization of the selectable one of said vapor recovery portion and said fuel dispensing portion of said at least one fuel dispenser;
• measuring the flow rate of the pneumatic fluid flow associated with the pneumatic pressurization activity;
• and
• providing an indication of the leakage condition of the selectable one of said vapor recovery portion and said fuel dispensing portion of said at least one fuel dispenser based upon the measured pneumatic fluid flow rate which satisfies a pressurization condition for said fuel dispenser.

A leak detection method for use with a fuel dispenser, said method comprising the steps of:

• pneumatically pressurizing a selectable one of a vapor recovery portion and a fuel dispensing portion of said fuel dispenser;
• controlling the pneumatic pressurization of the selectable one of said vapor recovery portion and said fuel dispensing portion of said fuel dispenser in accordance with leak test criteria;
• measuring the flow rate of the pneumatic fluid flow associated with the pneumatic pressurization activity;
• and
• providing an indication of the leakage condition of the selectable one of said vapor recovery portion and said fuel dispensing portion of said fuel dispenser based upon the measured pneumatic fluid flow rate which satisfies a pressurization condition for said fuel dispenser.

A leak detection method for use with a fuel dispenser, said method comprising the steps of:

• providing a fluid source controllably supplying a pressurized pneumatic fluid flow;
• disposing said fluid source in an arrangement enabling operative fluid communication between said fluid source and a selectable one of a vapor recovery portion and a fuel dispensing portion of said fuel dispenser to permit controllable pressurization thereof;
• providing a sensor to detect the flow rate of pressurized pneumatic fluid supplied by said fluid source;
• providing a controller to control the pressurization of the selectable one of said vapor recovery portion and said fuel dispensing portion of said fuel dispenser;
• and
• providing an indication of the leakage condition of the selectable one of said vapor recovery portion and said fuel dispensing portion of the fuel dispenser based upon the flow rate detected by said sensor which satisfies a pressurization condition for said fuel dispenser.