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7ML19981CJ02
MiniRanger Plus – INSTRUCTION MANUAL
Page 45
Open Channel Monitoring (OCM)
OCM converts a level reading (head) into a flow value using a linear algorithm. When the
MiniRanger is used to calculate flow the mA Output is scaled to the maximum flow (P604)
rather than the span (P007).
Example Flow Characterization
Program the parameters below to define the maximum and minimum points on the curve.
Then program the two following parameters to closely match the flow curve of your
primary measuring device (PMD).
Note:
OCM calculation is an optional feature. MiniRangers with the OCM feature
have this icon
on the front.
Parameter
Description
Value
P001
Operation
Enter "1" for
level
P006
Empty Distance
P007
Span (maximum head)
P600
Primary measuring device (PMD)
1
P604
Maximum flow (associated with P007)
P606
Time Units
Parameter
Description
Value
P610 (1 .. 9)
Head Breakpoints
P611 (1 .. 9)
Breakpoint Flowrates
P604
P611 [9]
P611 [8]
P611 [7]
P611 [6]
P611 [5]
P611 [4]
P611 [3]
P611 [2]
P611 [1]
P0
06
zero flow
P6
10 [
1]
P6
10 [
2]
P6
10 [
3]
P6
10 [
4]
P6
10 [
5]
P6
10 [6]
P6
10 [
7]
P6
10 [9]
P6
10 [
8]
P0
07