@meldrewreborn
Electronic flow meters are usually pretty reliable. Mechanical bellows types suffer from mechanical wear and usually start to read higher with time as the working parts get looser with wear, although they can occasionally read under if the mechanisms get sticky. My grandfather (who was a gas meter specialist back in the day) advocated that gas meters should be changed every five years and this is certainly the case in the commercial and industrial world.
The percentage error allowed on a gas meter is +/- 2% from the factory. This figure is tested at maximum flow rate and at 20% flow rate. If you have a meter that's reading almost 2% high at new, then chances are it will go out of spec sooner than one reading almost 2% low. I've not found any information on what the accuracy should be below 20% flow or between the 20% and 100% figures.
But gas meters are far more likely to be reading too high than too low, it appears.
Electronic flow meters are usually pretty reliable. Mechanical bellows types suffer from mechanical wear and usually start to read higher with time as the working parts get looser with wear, although they can occasionally read under if the mechanisms get sticky. My grandfather (who was a gas meter specialist back in the day) advocated that gas meters should be changed every five years and this is certainly the case in the commercial and industrial world.
The percentage error allowed on a gas meter is +/- 2% from the factory. This figure is tested at maximum flow rate and at 20% flow rate. If you have a meter that's reading almost 2% high at new, then chances are it will go out of spec sooner than one reading almost 2% low. I've not found any information on what the accuracy should be below 20% flow or between the 20% and 100% figures.
But gas meters are far more likely to be reading too high than too low, it appears.
Don't shoot me, I'm only the piano player. I DON'T work for or on behalf of EON.Next, but am willing to try and help if I can. Not on mains gas, mobile network or mains drainage. House heated almost entirely by baby dragons.
