Open Channel Monitoring (Ocm); Common Parameters - Siemens HydroRanger 200 HMI Operating Instructions Manual

Open Channel Monitoring (OCM)

An OCM installation is defined three ways, with each one based on the Primary
Measuring Device (PMD) used:
1. Dimensional (
Flume H-Flume
,
Weir BS-3680
For some common weir and flume types. PMD dimensions (
entered directly.
• BS-3680 / ISO 1438/1 Thin Plate V-Notch weir on page 103.
• BS-3680 / ISO 4359 Rectangular Flume on page 104.
• Palmer-Bowlus Flume on page 105.
• H-Flume on page 106.
2. Exponential (
For most other weir and flume types. PMD exponents provided by the manufacturer are
entered. Flow is calculated using the exponent (
2. 1 3.4.2. Maximum Head
values (
• Standard weirs on page 107.
• Parshall Flume on page 109.
• Leopold Lagco Flume on page 110.
• Cut Throat Flume on page 111.
3. Universal (
Calculation
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 112.
• Example flumes on page 113.
• Example weirs on page 113.

Common parameters

These parameters are required for all installations.
Parameter
2. 1 .3. Sensor Mode
2. 1 .6. Material
2.3.4. Response Rate
2. 1 .5. Transducer
2. 1 . 1 . Units
Page 100 HydroRanger 200 HMI – OPERATING INSTRUCTIONS
2.13.2. Primary Measuring Device
Rectangular Flume BS-3680
,
)
2.13.2. Primary Measuring Device
2. 1 3.4.3. Maximum Flow
and
2.13.2. Primary Measuring Device
Universal Curved Flow Calculation
,
Index
Global
Global
Global
Global
Global
Palmer-Bowlus
=
Thin Plate V-Notch
, or
2.13.5. PMD Dimensions
Exponential devices
=
2. 1 3.4.1. Flow Exponent
).
Universal Linear Flow
=
)
Mode/Value Description
Flow rate in open Operation
channel
Liquid Material
Medium Max. Process Speed
XPS-10 Transducer
Meters Units
) are
)
) and the maximum
A5E36281317