Instruction manual

7ML19981FB06 MultiRanger 100/200 – INSTRUCTION MANUAL Page 73
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Open Channel Monitoring
MR 200
Open Channel Monitoring (OCM)
[MR 200]
An OCM installation is defined one of three ways, based on the Primary Measuring
Device (PMD):
1. Dimensional (P600 = 2,3,6,7)
For some common weir and flume types. PMD dimensions (P602) are entered directly.
BS-3680 / ISO 1438/1 Thin plate V notch weir on page 75
BS-3680 / ISO 4359 Rectangular Flume on page 76
Palmer Bowlus Flume on page 77
H Flume on page 78
2. Exponential (P600 = 1)
For most other weir and flume types. PMD exponents provided by the manufacturer are
entered. Flow is calculated using the exponent (P601) and the maximum values (P603 and
P604).
Standard Weirs on page 79
Parshall Flume on page 80
Leoplod Lagco on page 81
Cut Throat Flume on page 82
3. Universal (P600 = 4,5)
For all other PMDs, the head-to-flow curve can be plotted based on known breakpoints,
usually supplied by the PMD manufacturer.
Typical Flow Characterization on page 83
Example Flumes on page 84
Example Weirs on page 84
Common Parameters
These Quick Start parameters are required for all installations.
Parameter Index Value Description
P001 G 6 Operation = OCM
P002 G 1 Material = liquid
P003 G 2 Max. Process Speed = medium
P004 G 102 Transducer = XPS-10
P005 G 1 Units = meters
P006 G 1.8 Empty = 1.8m
P007 G 1.0 Span = 1.4m
P801 G 0.8 Range Extension to avoid LOE