ABSTRACT
The gas meter and its associated controls are the property of the gas authority. Electricity and gas meters should not share the same compartment. If this is unavoidable, a fire resistant partition must separate them and no electrical conduit or cable should be closer than 50 mm to the gas meter and its installation pipework. Flame lift-off may also be prevented by increasing the number of burner ports to effect a decrease in the velocity of the gasair mixture. When the thermo-couple is heated by the gas pilot flame, a small electric current is generated. If the pilot flame is extinguished, the thermo-couple cools and the electric current is no longer produced to energise the solenoid. An electric charge is compounded in a capacitor, until a trigger mechanism effects its rapid discharge. This electrical energy passes through a step-up transformer to create a voltage of 10 or 15 kV to produce a spark.
