Onsite calculator
Gas rate and heat input
Choose the meter method, enter the readings and calculate. Use the built-in timer if you need it.
A) Gas Type
LPG may be propane, butane or a mixture. Use the gross calorific value supplied for the actual metered gas; do not guess it.
Leave the Natural Gas CV blank to use the clearly labelled 38.76 MJ/m³ teaching average, or enter the current gross CV where an exact comparison is required.
B) Measurement
Metric meter: use the recognised one-minute check, including any extra seconds taken for the display digit to change, or the established two-minute check.
C) Manufacturer’s Rated Input - Optional
Only compare like with like. Manufacturer instructions and the appliance data badge should state whether the rated input is gross or net.
D) Stopwatch
Use this to fill the timed test period automatically, or enter the measured time manually.
E) Procedure confirmation
Gas training and ACS assessments in Ashton-under-Lyne.