Measuring how many kw gas appliances are using.

[D_Hailsham]

I knew that litres is a way of measuring volume, I wanted to know what part of the meter is in litres.

I explained that the first time, but I don't mind repeating.

Your meter measures consumption in cubic metres M³ (1000 litres). The black numbers are M³, the red figures are decimal fractions of a M³; so the right hand red number is measuring usage in litres per second - one rotation equals ten litres of gas. The reading shown is 0.173M³ or 173 (and a bit) litres.

 

[D_Hailsham]

G4U's close...i'll write the 'idiots guide' version here.

1) With no appliances operating, write down the three red numbers on your meter
2) Fire up whichever appliance you're testing at full rate and immediately start a stopwatch
3) Go to your meter and wait for two minutes to elapse
4) At exactly two minutes, write down the new three red numbers
5) Go switch off the appliance, you're wasting gas
6) Subtract the first set of numbers from the second. Multiply the resulting number by 30.
7) The number you now have is how many metres cubed per hour of gas your appliance is burning

The Red Numbers are not cubic metres but decimal fractions of a cubic metre. The decimal point is between the black and red numbers. You must divide the result from step 6 by 1000 to give consumption in cubic metres.

E.G. If the first reading is 237 and the second is 255, then the difference is 18 which is 0.018 cubic metres.

 

[kirkgas]

i always use: take readings 2 minutes apart multiply difference (gas used) by 30 (to give hourly consumption) then multiply by 10.76 (calorific value i think!) answer is kw/h

 

[WDIK]

reading one, 2 mins reading 2.

find the difference.


then the mystical figure is 321.


then ask an ACS instructor what to next?

geeze how simple does it get?

 

[sooey]

reading one, 2 mins reading 2.

find the difference.


then the mystical figure is 321.


then ask an ACS instructor what to next?

geeze how simple does it get?

The mystical figures for me are 208 and 211, that's the page numbers of the tables in the corgi book (4th ed). It don't get no simpler than that.