摘要:
Corrosive detection assembly for use in a fuel dispensing system to identify presence of a corrosive substance in fuel. The corrosive detection assembly has at least one thermoelectric detector positioned to be in contact with fuel vapor in the fuel dispensing system, the thermoelectric detector producing a detector signal indicating presence of the corrosive substance. The thermoelectric detector includes a sensing circuit having a pair of junctions formed by interconnection of dissimilar conductors, the pair of junctions being configured to experience a substantially equivalent ambient temperature. Electronics are in electrical communication with the thermoelectric detector, the electronics being operative to interpret the detector signal and produce an output if the corrosive substance is present.
摘要:
Embodiments of the present invention provide a phase separation float assembly, a phase separation detection system, and a method for detecting phase separation. One embodiment comprises a first float subassembly comprising a first float adapted for vertical travel along a fuel level probe shaft and a magnet. This embodiment also comprises a second float subassembly comprising a second float adapted for vertical travel along the shaft. The first float has a first density and the second float has a second density greater than the first density. The second float subassembly further comprises at least one stop feature which engages the first float subassembly when the first float subassembly travels vertically a predetermined distance along the fuel level probe shaft. The first float density is selected such that the first float subassembly travels vertically along the shaft to engage the at least one stop feature in the presence of phase separation.
摘要:
A fuel quality monitoring system and method to automatically and/or continuously monitor quality of fuel dispensed and control the operation of the fuel dispenser. The control system monitors fuel quality to prevent unsafe refuelings when the fuel quality is unacceptable. In one embodiment, a combination of a differential pressure sensor, a water detector, and/or a particle monitor is employed inline the fuel flow path of a fuel dispenser, and in particular an aviation refueling truck, to monitor the quality of the fuel. If fuel quality is at an acceptable level although not ideal, the control system can allow fueling with the generation of reports and alarms. If the fuel quality is unacceptable, fuel flow can be stopped. If the differential pressure across the filter indicates a high degree of debris and/or water retention, the control system can automatically lower the flow rate to reduce the risk of filter breakdown without completely preventing fueling until the filter can be replaced.
摘要:
An apparatus and method are provided for calibrating manifolded liquid storage tanks. The apparatus includes sensors disposed within the tanks for sensing the liquid levels in each of the tanks and a metering device for measuring the amount of liquid dispensed into or out of the storage tanks. A processor is also provided which determines the amount of liquid dispensed from each tank based on liquid level measurements obtained during idle periods following dispensing periods. Once this information is obtained, single tank calibration techniques are employed. An alternate combined tank calibration can also be used. This method does not separate out the amount of liquid dispensed from each tank, but rather utilizes the combined amount dispensed. From this simpler, but less accurate method, an 'equivalent' combined tank chart or combined mathematical formula may be generated using the metered amounts and a combined height amount. Heights from the two tanks may be simply averaged. The processor may be programmed to perform either or both methods.
摘要:
Method for detecting phase separation in a fuel storage tank. The method comprises the step of providing a first float subassembly comprising a first float adapted for vertical travel along a shaft of a fuel level probe and a magnet. The method also comprises the step of providing a second float subassembly comprising a second float adapted for vertical travel along the fuel level probe shaft and at least one stop feature which engages the first float subassembly when the first float subassembly travels vertically a predetermined distance along the fuel level probe shaft. Further, the method comprises evaluating the position of the first float subassembly along the fuel level probe shaft using the magnet and determining whether the first float subassembly has traveled a distance greater than the predetermined distance.