Milltronics miniranger plus - Open Channel Monitoring (OCM) Features

7ML19981CJ01 MiniRanger Plus Page 53
Applications
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).
Note:
OCM calculation is an optional feature. MiniRangers with the OCM feature
have this icon
on the front.
Example Flow Characterization
Program the parameters below to define the maximum and minimum points
on the curve.
Number Value
P001 Operation 1
P006 Empty Distance
P007 Span (maximum head)
P600 Primary Measuring Device (PMD) 1
P604 Maximum flow (associated with P007)
P606 Time Units
Then program the two following parameters to closely match the flow curve
of your primary measuring device (PMD).
Number
Value
P610
[
1..9
]
Head Break
p
oints
P611
[
1..9
]
Break
p
oint Flowrates
P611 [4]
head
flow
P611 [3]
P611 [2]
P611 [1]
P604
P610 [1] P610 [2] P610 [3]
P007 P006
zero flow
P610 [4]
P610 [5] P610 [6] P610 [7] P610 [8] P610 [9]
P611 [5]
P611 [6]
P611 [7]
P611[ 8]
P611 [9]