Liquid Controls SP4000 - Manual (Page 55)

52
SP4000 Flow Computer
FLUID DATA
2
RATE 1
TOTAL
6.7
FLUID DATA
(Continued)
2
RATE 1
TOTAL
2
RATE 1
TOTAL
Enter the thermal expansion coefficient for a generic liquid. The
coefficient is required for the temperature compensation of volume
with various flow equations (i.e. Liquid Mass or Corrected Liquid
Volume).
Input:
Number with floating decimal point: 0.000...100000 (e-6)
The thermal expansion coefficient can be calculated as follows:
c =
1 -
ρ
(T
1
)
ρ
(T
0
)
T
1 - T 0
• 10
6
c Thermal expansion coefficient
T
0
,T
1
Temperatures at known points (see below)
ρ
(T
0
,T
1
) Density of the liquid at temperature T
0
or T
1
For optimum accuracy, choose the reference temperatures
as follows:
T
0
: midrange temperature
T
1
: choose a second point at or near the maximum process
temperature
10 6 The value entered is internally multiplied by a factor of 10 -6
(display: e-6/temp. unit) since the value to be entered is
very small.
Display: 104.300 (e-6/oF)
THERM.EXP.COEF.
Enter the specific combustion heat for generic fuels.
Input:
Number with floating decimal point: 0.000...100000
Display: 1000.000 kBtu/lbs
COMBUSTION HEAT
Enter the specific heat capacity for generic fluids. This value is
required for calculating the delta heat of liquids.
Input:
Number with floating decimal point: 0.000...10.000
Display: 10.000 kBtu/lbs-
°
F
SPECIFIC HEAT
THERM. EXP. COEF.
COMBUSTION HEAT
SPECIFIC HEAT