HF074AEN_v0403_04 Atex_IECEx_CSA_FM
Page 13
3.2.3.
EXPLANATION OF SETUP-FUNCTIONS
1 - LEVEL
MEASUREMENT UNIT
11
SETUP - 11 determines the measurement unit for the displayed level.
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
This setting determines for level the number of digits following the decimal
point. The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
SPAN
13
With the span, the sensor signal is converted to a quantity.
The
span for level
is determined on the basis of the
selected
measurement unit
at 20mA.
Enter the span in whole numbers (decimals are set with SETUP 12).
The more accurate the span, the more accurate the functioning of the
system will be.
Example 1
Calculating the span for level
Let us assume that the sensor generates 20mA at a level
of 2,481.3 Liters, the selected unit is "Liters".
The span is 2481.3
Enter for
SETUP
- 13: "24813" and for
SETUP
- 12 - "1".
Example 2
Calculating the span for level
Let us assume that the sensor generates 20mA at a level
of 652.31 USGAL, the selected unit is USG.
The span is 652.31. Enter for SETUP - 13: "652.31 and
for SETUP - 12 "2".
OFFSET
14
Enter here the "not measured" quantity which is below the sensor, in case
a pressure transducer e.g. is used to measure the quantity.
Also, a negative offset can be entered: do press the middle and right
button simultaneously.
