What is the formula for clocking a gas meter?

The formula for clocking a gas meter is determined by the relationship between the volume of gas that flows through the meter and the time it takes for that volume to be measured. To calculate the cubic feet per hour (CFH) of gas flowing through the meter, we first need to measure the volume of gas flowing over a specific time interval, typically expressed in seconds.

Using a 1-foot meter, we consider the volume measurement of one foot of gas flow. The multiplication by 3600 is necessary because there are 3600 seconds in one hour. This conversion allows us to express the flow rate in terms of cubic feet per hour, which is a standard measurement for gas flow. Thus, the correct formulation captures both the volume of gas in cubic feet and the time in hours by taking the flow rate from a per-second rate to an hourly rate.

The choice that incorporates this correct relationship shows the multiplication of the volume (1 foot) by the number of seconds in an hour (3600) and acknowledges the time factor which is essential to derive flow rate in CFH. This understanding is critical for anyone working with gas meters, ensuring accurate measurement and billing for gas usage.