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GAS RATE CALCULATOR
Calculator for working out gas rate and heat input from a measured volume of gas.
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.
Natural Gas uses the industry teaching average of 38.76 MJ/m³. Use the current value stated by the supplier where a more exact result is required.
B) Measurement
Metric meter: enter the first and second readings and the measured time.
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.
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