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Coefficients of bringing gas volumes to normal conditions

Most meters that are installed at consumers count the gas volume under working conditions. If there is a need to determine the volume under standard conditions, the calculation is performed according to the method of bringing the volume of natural gas to standard conditions according to household meters in the absence of devices for measuring temperature and pressure, approved by the Ministry of Fuel and Energy nr. 116 dd. 26.02.2004.


Standard conditions are an air temperature of 20 degrees centigrade and an absolute pressure of 760 mm Hg. It defines six groups of coefficients for adjusting the meter readings. These coefficients are called conversion or correction one.
Such coefficients are used to calculate the volume of gas consumed by a commercial consumer, if the metering unit is not equipped with a corrector. Household meters (without temperature and pressure correction) are usually used on non-domestic facilities with low consumption, so the volume calculated by the meter is adjusted using the appropriate coefficient.
However, with the help of these coefficients, any household consumer can independently determine their gas consumption under standard conditions. To bring the volume of natural gas measured by the meter to standard conditions, it is necessary to multiply it by the appropriate coefficient: 

V × K = Vc 

where V – volume of gas measured by the meter, cm 
K – the coefficient for reduction to standard conditions
Vc – the volume of gas reduced to standard conditions, cm 

To do this, you need to choose the right coefficient. The application of a coefficient depends on the meter placement. It is necessary to choose a group of coefficients and a value that corresponds to a specific calendar month defined for Ternopil Region correctly:

CoefficientCoeff.-1 
(D≤1) 
Coeff.-2 
(D>1)
Coeff.-3 
(OP≤0,5) 
Coeff.-4 
(0,5<OP≤1,5)
Coeff.-5 
(OP>1,5)
Coeff.-6 
(TK) 
Month

1

1,04

1,07

1,03

1,02

1,00

0,981

2

1,05

1,07

1,03

1,02

1,00

0,980

3

1,05

1,05

1,02

1,01

1,00

0,980

4

1,03

1,02

1,00

0,99

0,99

0,977

5

1,01

1,00

0,99

0,99

0,99

0,979

6

1,00

0,97

0,99

0,99

0,99

0,978

7

0,99

0,97

0,98

0,98

0,98

0,979

8

0,99

0,97

0,99

0,99

0,99

0,980

9

1,00

1,00

0,99

0,99

0,99

0,981

10

1,01

1,03

1,00

1,00

1,00

0,983

11

1,02

1,05

1,02

1,01

1,00

0,980

121,031,061,031,021,000,980

Coefficient groups to bring the gas volume to standard conditions, depending on the meter placement:

ADJUSTMENT COEFFICIENT 1 is applied in case of placement of the meters outside the premises at a distance from the pipeline exit from the ground to the inlet fitting of the meter, which is equal to or less than 1.0 m, or in the case of placing the meter in an unheated room. 
ADJUSTMENT COEFFICIENT 2 is applied in case of placement of the meters outdoors at a distance from the pipeline exit from the ground to the inlet fitting of the meter, which is more than 1.0 m. 
ADJUSTMENT COEFFICIENT 3 is applied in case of placement of the meter in a heated premises at a distance from the gas pipeline exit from the ground to the inlet fitting of the meter, which is less than or equal to 0,5 m.  
ADJUSTMENT COEFFICIENT 4 is applied in case of placement of the meter in a heated premises at a distance from the gas pipeline exit from the ground to the inlet fitting of the meter, which is more than 0,5 m and less than or equal to 1,5 m.  
ADJUSTMENT COEFFICIENT 5 is applied in case of placement of the meter in a heated premises at a distance from the gas pipeline exit from the ground to the inlet fitting of the meter, which is more than 1, 5 m, or in the case of placement of the meter in a heated premises, the gas pipeline exit into which is located in a heated room.  
ADJUSTMENT COEFFICIENT 6 is applied in case of using household gas meters with elements of temperature compensation.