Fuel dispenser pulser arrangement

A fuel dispenser, comprising:

• at least one flow meter;
• at least one pulser associated with said at least one flow meter for generating a pulse series indicative of a volume of fuel delivered through said at least one flow meter;
• said at least one pulser having an identifier, correction data and encryption information stored in nonvolatile memory;
• a control system for controlling the fuel dispenser, said control system being adapted to read from and write to said at least one pulser nonvolatile memory;
• and
• a communication circuit to enable communication between said control system and said at least one pulser, wherein said communication between said control system and said at least one pulser is encrypted;
• wherein at least one of said at least one pulser and said control system is adapted to alter said pulse series using said correction data.

A serial pulser associated with a control circuit and a flow meter for generating pulser data related to the volume of fluid delivered through said flow meter, comprising:

• a nonvolatile memory;
• a switch operatively connected to said nonvolatile memory, said switch actuatable by a technician to vary said nonvolatile memory of said serial pulser between a write-protected and a write-enabled mode;
• calibration data stored in said nonvolatile memory to enable said serial pulser to generate calibrated pulser data, wherein at least one of said pulser data and said calibrated pulser data is stored in said nonvolatile memory;
• encryption algorithms stored in said nonvolatile memory to facilitate secure communications between said serial pulser and said control circuit;
• and
• a serial communication circuit which enables serial communication between said serial pulser and said control circuit.

A fuel dispenser, comprising:

• a housing comprising fuel dispenser electronics;
• a fuel flow line and at least one flow meter operatively connected to said fuel flow line;
• at least one pulser associated with said at least one flow meter adapted to generate pulser data indicative of a volume of fluid delivered through said at least one flow meter;
• and
• a serial communication circuit to enable serial communication between said fuel dispenser electronics and said at least one pulser;
• wherein said at least one pulser comprises:
• a nonvolatile memory having an identifier stored therein;
• a switch operatively connected to said nonvolatile memory, said switch operative to vary said memory of said at least one pulser between a write-protected and a write-enabled mode;
• calibration data stored in said nonvolatile memory to enable said at least one pulser to generate calibrated pulser data, wherein at least one of said pulser data and said calibrated pulser data is stored in said nonvolatile memory;
• and
• an encryption algorithm stored in said nonvolatile memory to facilitate secure communications between said at least one pulser and said fuel dispenser electronics.