EMR
3
Setup and Operation Manual
C&C Mode Setup Categories
38
1
Acceptable temperature compensation range: -40°C to +70°C. Temperature compensated volume changes
for specific products are determined using the formula:
V
o
= V
t
(
ρ
t
/
ρ
o
)
where: V
t
= uncompensated gross volume
V
o
= calculated temperature compensated volume
ρ
t
/
ρ
o
= ratio of density at measured temperature to density at base temperature
The ratio of density is calculated after inserting the appropriate constants into the equation below:
ρ
t
/
ρ
o
= e
-
λ
Where:
λ
= -
α
o
(t - 15) [1 +
α
o
(0.8) (t - 15)]
t = measured temperature
α
o
= K
0
/
ρ
o
2
+ K
1
/
ρ
o
or
α
o
= A + B /
ρ
o
2
Notes:
The ratio of density is equation 4.16 from page 9 of the PTB-A 5 Measuring Systems for Liquids other than
Water - June 1999 edition.
Setting factor pairs used to calculate
α
o
above (K
0
and K
1
or A and B) are taken from Table 4.2 on page 10 of
the PTB-A 5 Measuring Systems for Liquids other than Water - June 1999 edition.
Table 4 - Minimum & Maximum Product Densities at 15°C
1
Product
Min. Density
(kg/m
3
)
Max. Density
(kg/m
3
)
Default Density
(kg/m
3
)
OIML R63
Table
Gasoline
600.0
770.0
737.0
54B
Diesel
838.6
1200.0
849.0
54B
Kerosene
787.6
838.5
820.0
54B
Aviation Gas
600.0
770.0
704.0
54B
Fuel Oil
838.6
1200.0
849.0
54B
Crude Oils
610.5
1075.0
940.0
53A
Lubricating Oils
750.0
1164.0
887.0
53D
Table 5 - 12 Temperature/Density Pairs
2,3
Entry No.
Temp (°C)
Temp (°F)
Propane Density (Default)
(kg/m
3
)
Butane Density (Reference)
(kg/m
3
)
1
-26.1
-15
563.0
629.0
2
-20.6
-5
558.0
623.0
3
-15.0
5
551.0
617.0
4
-9.4
15
545.0
611.0
5
-3.9
25
537.0
606.0
6
1.7
35
529.0
599.0
