C&C Mode
C&C Mode Setup Categories
40
TEMPERATURE COMPENSATION METHOD - COEFFICIENT OF EXPANSION
Temperature compensated volume changes for specific products are determined using the formula:
V
o
= V
t
+ V
t
[C
oe
(15°C - t)]
Coefficient (C
oe
) values may be modified to meet specific fuel/product specifications. The factor “t” is the
measured fuel temperature. For example, use the procedure described in Figure 40 on page 39 to change the
default coefficient of expansion for diesel from 0.00081 to 0.00083. To calculate temperature compensated
volume the coefficient of expansion (C
oe
) is now equal to 0.00083.
Table 2 - Product Temperature/Coefficient of Expan
s
ion Default
s
Product
Coefficient °C
Coefficient °F
Default Den
s
ity at 15°C
1
OIML R63 Table
Gasoline
0.00126
0.00070
737 kg/m
3
54B
Diesel
0.00081
0.00045
849 kg/m
3
54B
Jet A
0.00090
0.00050
820 kg/m
3
54B
Aviation gas
0.00135
0.00075
704 kg/m
3
54B
Fuel Oil
0.00081
0.00045
849 kg/m
3
54B
Crude Oil
0.00085
0.00047
940 kg/m
3
53A
Lu
b
ricating Oils
0.00085
0.00047
887 kg/m
3
53D
1
Accepta
b
le temperature compensation range: -40°C to +70°C.
Table 3 - Temperature/Coefficient of Expan
s
ion Default
s
for Propane
1
Entry No.
Temp (°C)
Default Coefficient
Temp (°F)
Default Coefficient
1
-26.1
0.00257
-15
0.00143
2
-20.6
0.00261
-5
0.00145
3
-15.0
0.00265
5
0.00147
4
-9.4
0.00270
15
0.00150
5
-3.9
0.00275
25
0.00153
6
1.7
0.00279
35
0.00155
7
7.2
0.00284
45
0.00158
8
15.0
0.00288
59
0.00160
9
23.9
0.00293
75
0.00163
10
29.4
0.00302
85
0.00168
11
35.0
0.00306
95
0.00170
12
40.6
0.00310
105
0.00172
1
Note: for other liquefied petroleum gases modify the coefficient of expansion defaults to their proper
values in accordance with ASTM-IP Ta
b
les.
