Liquid Controls IT150N - Manual (Page 8)

Sponsler, Inc. IT150N Remote Totalizer pg 8 DOC# MN-150N-B
Change of Calibration Engineering Units
Assume that liters rather than gallons is the desired engineering unit.
Example # 4 K-Factor = 250 pulses per gallon
Liters = 3.785 per gallon
C.F. =
Units per Gallon
Pulses per Gallon
C.F. = 3.785 / 250
C.F. = .01514 for display of liters
On the Factoring P.C.B.:
Set S6 #2 ‘ON’ (
↓ Position) (moves decimal point right 1 place)
Set S2@1, S3@5, S4@1, S5@4 (.1514)
Set S1 in ‘0’ Position (0.1514) on the IT150I P.C.B.
Note: The ‘0-1’ function was not incorporated because only 1 of the 2 conditions was met-
C.F.’s 1 st digit right of decimal is 1
Example #5: The Engineering unit is pounds in 10
th s CO
2
K-Factor = 250 pulses per gallon
Pounds of CO
2
= 8.470 per gallon
In order to establish 10 th s, increase lbs./gal. by a factor of 10
C.F. = 84.7/250
C.F. = .3388
On the Factoring P.C.B.:
Set S6 #1 ‘ON’ (
↓ Position) (does not move decimal)
Set S2@3, S3@3, S4@8, S5@8 (.3388)
Set S1 in ‘0’ Position (0.3388) on the IT150I P.C.B.
Note: If the gallons per unit volume such as 7.48 gallons per FT
3 is known, but not the unit volume per
gallon as required to calculate calibration factor; take the reciprocal of gallons per unit volume to
derive the unit volume per gallon; i.e. 7.48 gallons per FT
3 - 1/7.48 = .13369 FT 3 per gallon.
Example #6: The engineering unit is ACF (FT
3 )
K-Factor = 250 pulses per gallon
ACF = .13369 per gallon
C.F. = .13369 / 250
C.F. = .00053476
On the Factoring P.C.B.:
Set S6 #4 ‘ON’ (
↓ Position) (moves decimal point right 3 places
Set S2@5, S3@3, S4@4, S5@8 (.5348 rounding fourth digit)
Set S1 in ‘0’ Position (0.5348) on IT150I P.C.B.
Example #7: Desired Engineering Unit is ACF x 10
K-Factor = 250 pulses per gallon
ACF = .13369 per gallon
In order to establish x 10, decrease ACF/gal by a factor of 10
Formula #3