HF110AEN_v0501_04
Page 13
3.2.3.
EXPLANATION OF SETUP-FUNCTIONS
1 - TOTAL
MEASUREMENT UNIT
11
SETUP - 11 determines the measurement unit for total, accumulated total
and pulse output. The following units can be selected:
L - m3 - kg - lb. - GAL - USGAL - bbl - _ (no unit).
Alteration of the measurement unit will have consequences for operator
and SETUP-level values.
Please note that the Span has to be adapted as well; the calculation is not
done automatically.
DECIMALS
12
The decimal point determines for total, accumulated total and pulse output
the number of digits following the decimal point.
The following can be selected:
0000000 - 111111.1 - 22222.22 - 3333.333
SPAN
13
With the span, the flowmeter signal is converted to a quantity.
The
span for Total
is determined on the basis of the measurement unit
(setting 11) and the
flowrate per second
at 20mA (or max signal).
Enter the span in whole numbers (decimals are set with SETUP 14).
The more accurate the span, the more accurate the functioning of the
system will be:
Example 1
Calculating the Span.
Let us assume that the flowmeter generates 20mA at a rate of
652.31 USGAL per hour, the selected unit is barrels.
There are 42 gallons in one barrel; so the rate is 652.31/42 is
15.53119 barrels/hour.
This is 0.0043142 barrels/second, which is the span.
Enter for
SETUP
- 13: "004314" and for
SETUP
- 14 "6".
Example 2
Calculating the Span.
Let us assume that the flowmeter generates 20mA at a
flowrate of 2,481.3 Liters/minute and the selected unit is "cubic
meters / m3".
The rate per second is 2,481.3÷60 is 41.355 L/sec.
This is 0.041355 m3/sec., which is the span.
Enter for
SETUP
- 13: "041355" and for
SETUP
- 14 -
decimals span "6".
DECIMALS SPAN
14
This setting determines the number of decimals for the Span
(SETUP 13). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this function influences the accuracy of the Span
indirectly.
This setting has NO influence on the displayed number of digits for total
(SETUP 12)!