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APPLICATION GUIDE
Flow Application Configuration
Configuring the MultiRanger 200 to measure open channel flow
AG040305
Objective:
Equipment:
While every effort was made to verify the following information, no warranty of accuracy or usability is expressed or implied.
Specific parameter setting to configure the following primary measurement devices:
• exponential devices
• Palmer-Bowlus Flume
• H-Flume
• Universal Linear Flow Calculation
MultiRanger 200, transducer, IR Hand Held Programmer or Dolphin Plus software, and primary
measurement device.
• Universal Curved Flow Calculation
• BS 3680/ISO 4359 Rectangular Flume
• BS 3680/ISO 1438/1 Thin Plate V-Notch Weir
Overview:
This application guide is an addition to the instruction manual. Please review manual to ensure you are familiar with configuring
the MultiRanger 200 using the IR Hand Held Programmer or the Dolphin Plus software tool.
Setting up the Common Parameters
These parameters are configured for all the open channel flow measuring applications supported by the MultiRanger 200.
Parameter Parameter Index* Value Parameter and Value Definition **
P001 G 6 Selects Open Channel Flow measurement.
P002 G 1 Sets measured material to liquid.
P003 G 2 Sets maximum processing speed, or speed of response, to
medium.
P004 G 102 (example) Selects transducer (e.g. 102 = XPS 10) connected to MultiRanger
200.
P005 G 1 (example) Sets units for head measurement (e.g 1 = meters).
P006 G Empty Distance Sets the distance from zero point of measurement (many times
bottom of the weir or channel) to the sensor surface. Head is
measured with reference to this zero point
P007 G Span of Head
measurement
P801 G Range Extension Permits the liquid level to go below the zero point to the amount set
* G means ‘global.’ If f you have dual channel unit then the index is either 1 or 2 . For both, select 00.
** Here we have chosen one value. Other choices can be selected from the manual as needed.
Sets the range of head measurement. Often equal to the maximum
head.
here without indicating an LOE condition (pre-set is 20% of span).
Siemens Milltronics Process Instruments Inc.
1954 Technology Drive, P.O. Box 4225, Peterborough, ON Canada K9J 7B1
Tel: (705) 745-2431 Fax: (705) 741-0466 www.siemens-milltronics.com
Email: techpubs@siemens-milltronics.com
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APPLICATION GUIDE
Selecting the Primary Measuring Device (P600)
The MultiRanger 200 supports the following primary measuring devices to calculate the flow rate based on either the Absolute
method or Ratiometric method. The design standards of these devices are programmed in the MultiRanger 200, and it applies the
correct standard formula to calculate the flow.
If you do not have a primary device, or your primary devices are not included in this list, selecting
Calculation
method.
Parameter Parameter Index Value
Select one value from the following list of primary measuring devices and methods per channel application.
or
Universal Curved Flow Calculation
G
P600
Value Description of Selected Value Flow Calculation Method
0 Flow calculation is off and no flow rate or total flow will be calculated None
1 Exponential devices Ratiometric
2 Palmer-Bowlus Flume Ratiometric
3 H-Flume Ratiometric
4 Universal Linear Flow Calculation Ratiometric
5 Universal Curved Flow Calculation Ratiometric
6 BS-3680/ISO 4359 Rectangular Flume Absolute
7 BS-3680/ISO 1438/1 Thin Plate V-notch Weir Absolute
(dual channel 1 or
2, if both enter 00)
Choose from 0 through to 7
enables the MultiRanger 200 to calculate the flow rate based on Ratiometric
Universal Linear Flow
Configuring for the Selected Measurement Devices
The following sections present the calculations required to set the parameter values necessary to configure the applications
according to the measuring device.
Section 1.0 Exponential Device (P600 = 1)
Single exponent devices supported by MultiRanger 200:
Standard Weirs Flumes Other
• V-notch or triangular
• Rectangular or Suppressed
• Trapezoidal or Cipolleti
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• Parshall
• Leopold Lagco
• Cut Throat
• any other single exponent
primary measuring device,
whose exponent value is
known.
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APPLICATION GUIDE
Section 1.1 Exponential Device Flow Calculation Equation
MultiRanger 200 calculates flow rate (Q) based on Ratiometric calculation method using the following exponential equation:
Q = Q
max
(H/H
Value Table
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user must
know the measurement units (liters/sec. or gallons/min. etc.).
Q
Maximum flow (at maximum head H
max
) as configured in P604. Its value is user provided, and is shown as
max
a standalone number with no units indicated. User must know measurement units used.
For example, if maximum flow is 1000 LPS then P604 = 1000 and P606 = seconds
H
Maximum Head H
max
as configured in P603. Its value is provided by the user. Generally the same value as
max
span configured in P007. The units are defined in P005.
x Exponent as configured in P601. Its value is provided by the user. If the value is taken from the
MultiRanger 200 manual, it should be verified by the user or with the manufacturer documentation.
H Head measured by the ultrasonic head, or any other level measuring device, mounted upstream from the
open channel measuring device. IMPORTANT: set in the same units selected in P005.
max
X
)
Section 1.2 Exponential Device Flow Configuration Table
Set parameters P601, P603, P604, and P606 to calculated values.
Parameter # Description Configuration Status
P600 Set to 1 (exponential device) Must be configured.
P601 Enter the value of exponent x Must be configured.
P603 Enter the value of H
P604 Enter the value of Q
P606 Time units Must be configured.
P605 Zero Head Off-set Optional, configure only when the actual zero is above channel
P607 Flow rate decimal Optional, configured to display the flow rate (Q). Factory set to 2.
P620 Low flow cut-off Optional, set to avoid totalizing at flows below this set level.
P621 Auto zero head calibration Optional, configure only if head displayed has constant off-set.
Must be configured.
max.
Must be configured.
max.
bottom.
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APPLICATION GUIDE
Section 2.0 Palmer-Bowlus Flume (P600 = 2)
Section 2.1 Palmer-Bowlus Flume Flow Calculation Equation
MultiRanger 200 calculates flow rate (Q) based on Ratiometric calculation method using the following equation;
Q = Q
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user
must know the measurement units used (liters/sec. or gallons/min. etc.).
Q
Maximum flow (at maximum head H
max
shown as a standalone number with no units indicated. User must know measurement units used.
For example, if maximum flow is 1000 LPS then P604 = 1000 and P606 = seconds
H
Maximum Head H
max
value as span configured in P007. The units are defined in P005.
H Head measured by the ultrasonic head, or any other level measuring device, mounted upstream
from the open channel measuring device. IMPORTANT: set in the same units selected in P005.
D Flume width as configured in P602 in the units defined in P005. This Information will be available
from the user or by referring to the flume manufacturer’s published discharge tables (e.g. for 30”
Palmer Bowlus Flume from Plasti-Fab set P602 to 30 and P005 to inches).
as configured in P603. Its value is provided by the user. Generally the same
max
x f(H/ H
max
Value Table
) as configured in P604. Its value is user provided, and is
max
max
)/f(H
max
/ D)
Section 2.2 Palmer-Bowlus Flume Configuration Table
Parameter # Description Configuration Priority
P600 Set to 2 (Palmer-Bowlus Flume). Must be configured.
P602 Enter the value D, the listed flume width. Must be configured.
P603 Enter the value of H
P604 Enter the value of Q
P605 Zero Head Off-set. The flume is installed inside the
pipe and its zero reference is above the zero
reference of the pipe, where transducer monitors
the head.
P606 Time units Must be configured.
P607 Flow rate decimal Optional, configured to display the flow rate
P620 Low flow cut-off Optional, to avoid totalizing at flows below
P621 Auto zero head calibration Optional, configured if displayed head has
Must be configured.
max.
Must be configured.
max.
Must be configured.
(Q). Factory set to 2.
this set level.
constant off-set.
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APPLICATION GUIDE
Section 3.0: H-Flume (P600)
Section 3.1 H-Flume Flow Rate Calculation Equation
MultiRanger 200 calculates flow rate (Q) based on Ratiometric calculation method using the following equation:
Q = Q
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user must
know the measurement units used (liters/sec. or gallons/min. etc.).
Q
Maximum flow (at maximum head H
max
as a standalone number with no units indicated. User must know measurement units used.
For example, if maximum flow is 1000 LPS then P604 = 1000 and P606 = seconds
H
Maximum Head H
max
as span configured in P007. The units are defined in P005.
H Head measured by the ultrasonic head, or any other level measuring device, mounted upstream from
the open channel measuring device. IMPORTANT: set in the same units selected in P005.
D Flume height as configured in P602 in the units defined in P005. This Information will be available from
the user or by referring to the flume manufacturer’s published discharge tables (e.g. for 1.5 ft. H-Flume
set P602 to 1.5 and P005 to feet).
Section 3.2 H-Flume Configuration Table
Parameter # Description Configuration Priority
P600 Set to 3 (H-Flume device) Must be configured.
P602 Enter the value D,the maximum height for the flume. Must be configured.
P603 Enter the value of H
P604 Enter the value of Q
P605 Zero Head Off-set Configured only when the actual zero is
P606 Time units. Must be configured.
P607 Flow rate decimal Optional, configured to display the flow rate
P620 Low flow cut-off Optional, to avoid totalizing at flows below
P621 Auto zero head calibration Optional, configured if displayed head has
as configured in P603. Its value is provided by the user. Generally the same value
max
Must be configured.
max.
Must be configured.
max.
x f(H/ H
max
Value Table
) as configured in P604. Its value is user provided, and is shown
max
max
)/f(H
/ D)
max
above channel zero.
(Q). Factory set to 2.
this set level.
constant off-set.
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APPLICATION GUIDE
Section 4.0 Universal Linear Flow Calculation (P600 = 4)
The MultiRanger 200 uses polynomial function routines to generate a linear curve fitting between the discrete data points (also
called break points) entered by the user. A maximum of 32 data points each for head and corresponding flow discharge in the
secondary indices of P610 (Head breakpoints) and P611 (Flow breakpoints) can be defined. With maximum head value defined in
P603 and corresponding maximum flow value defined in P604, a total of 33 discrete points are available to the MultiRanger 200 for
flow rate calculation. Use as many data points as possible where flow variations are maximum for increased accuracy.
Section 4.1 Universal Linear Flow Calculation Equation
The MultiRanger 200 calculates flow rate (Q) based on Ratiometric calculation method using the following equation:
Q = Q
x f(H)/f(H
max
Value Table
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user must
know the measurement units used (liters/sec. or gallons/min. etc.).
Q
Maximum flow (at maximum head H
max
) as configured in P604. Its value is user provided, and is shown
max
as a standalone number with no units indicated. User must know measurement units used.
For example, if maximum flow is 1000 LPS then P604 = 1000 and P606 = seconds.
H
Maximum Head H
max
as configured in P603. Its value is provided by the user. Generally the same value
max
as span configured in P007. The units are defined in P005.
H Head measured by the ultrasonic head, or any other level measuring device, mounted upstream from
the open channel measuring device. IMPORTANT: set in the same units selected in P005.
f(H) Calculated by MultiRanger 200 using polynomial function.
Section 4.2 Universal Linear Flow Calculation Configuration Table
Parameter # Description Configuration Priority
P600 Set to 4 (universal linear flow calculation) Must be configured.
P603 Enter the value of H
P604 Enter the value of Q
P606 Time units Must be configured.
P610 (Secondary
Indices 1 – 32
max)
Sequentially enter from lowest head value in break
point 1 (generally 0) and gradually increase up to
maximum 32 head break points. The units are as set in
P005.
P611 (Secondary
Indices 1 – 32
max)
Sequentially enter corresponding flow values for
above head break points. Start from lowest flow value
in break point 1 (generally 0) and gradually increase
up to maximum 32 flow break points. The time units
are as set in P606.
P605 Zero head off-set Optional, configure only when the
P607 Flow rate decimal Optional, configured to display the
Must be configured.
max.
Must be configured.
max.
max
)
Must be configured.
Must be configured.
actual zero is above channel zero.
flow rate (Q). Factory set to 2
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APPLICATION GUIDE
Parameter # Description Configuration Priority
P620 Low flow cut-off Optional, to avoid totalizing at flows
below this set level
P621 Auto zero head calibration Optional, configured if displayed head
has constant off-set
Section 5.0 Universal Curved Flow Calculation (P600 = 5)
The MultiRanger calculates the flow rate using the same method as the linear flow calculations. It differs by applying a curved
fitting between the discrete points.
Section 5.1 Universal Curved Flow Calculation Equation
The MultiRanger 200 calculates flow rate (Q) based on Ratiometric calculation method using the following equation:
Q = Q
x f(H)/f(H
max
Value Table
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user must
know the measurement units used (liters/sec. or gallons/min. etc.).
Q
Maximum flow (at maximum head H
max
) as configured in P604. Its value is user provided, and is shown
max
as a standalone number with no units indicated. User must know measurement units used.
For example, if maximum flow is 1000 LPS then P604 = 1000 and P606 = seconds.
H
Maximum Head H
max
as configured in P603. Its value is provided by the user. Generally the same value
max
as span configured in P007. The units are defined in P005.
H Head measured by the ultrasonic head, or any other level measuring device, mounted upstream from
the open channel measuring device. IMPORTANT: set in the same units selected in P005.
f(H) Calculated by MultiRanger 200 using polynomial function
Section 5.2 Universal Curved Flow Calculation Configuration Table
Parameter # Description Configuration Priority
P600 Set to 5 (universal curved flow calculation) Must be configured.
P603 Enter the value of H
P604 Enter the value of Q
P606 Time units Must be configured.
P610
(Secondary
Indices 1 – 32
Enter sequentially from lowest head value in break point 1
(generally 0) and gradually increasing up to maximum 32
head break points. The units are as set in P005.
max)
P611
(Secondary
Indices 1 – 32
max)
Sequentially enter corresponding flow values for above
head break points starting form lowest flow value in
break point 1 (generally 0) and gradually increasing up to
maximum 32 flow break points. The time units are as set
in P606.
P605 Zero Head Off-set Configured only when the actual zero
Must be configured.
max.
Must be configured.
max.
max
)
Must be configured.
Must be configured.
is above channel zero
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APPLICATION GUIDE
Parameter # Description Configuration Priority
P607 Flow rate decimal Optional, configured to display the
flow rate (Q). Factory set to 2
P620 Low flow cut-off Optional, to avoid totalizing at flows
below this set level
P621 Auto zero head calibration Optional, configured if displayed
head has constant off-set
Section 6.0 BS-3680/ISO 4359 Rectangular Flume (P600 = 6)
For flowrate calculation, this method requires only the physical dimensions of the flume:
B Approach channel width
b Throat width
p Hump height
L Throat length
Section 6.1 BS-3680/ISO 4359 Rectangular Flume Flow Calculation Equation
The MultiRanger 200 calculates flow rate (Q) based on the Absolute calculation method confirming to BS 3680 Part 4C standard
for Rectangular flumes and uses the following equation:
Q = (2/3)
1.5
x (g)
0.5
x Cv x Cs x Cd x B x (h)
1.5
Value Table
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user must
know the measurement units used (liters/sec. or gallons/min. etc.).
g Acceleration due to gravity
B Throat width
h Head measured by the ultrasonic head, or any other level measuring device, mounted upstream from
the open channel measuring device. IMPORTANT: set in the same units selected in P005.
Cv Velocity coefficient calculated by MultiRanger 200
Cs Shape coefficient (= 1 here)
Cd Discharge coefficient calculated by MultiRanger 200
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APPLICATION GUIDE
Section 6.1 BS-3680/ISO 4359 Rectangular Flume Flow Calculation Table
Parameter #
Description Priority
P600 Set to 6 (BS 3680/ISO 4359 Rectangular Flume) Must be configured.
P602 = (1 – 6) Enter the values of B, b, p & L in indices 1 to 4 respectively. In
indices 5 and 6 you can view calculated values of C
respectively
P605 Zero Head Off-set Must be configured due to hump height of the
P608 Flow rate units Must be configured.
P607 Flow rate decimal is configured. Optional, configured to display the flow rate (Q).
P620 Low flow cut-off (Its optional), to avoid totalizing at flows below
this set level.
P621 Auto zero head calibration (its optional), configured if head
displayed has constant off-set.
Must be configured.
and C
v
d
flume.
Factory set to 2.
Optional, to avoid totalizing at flows below this set
level.
Optional, configured if displayed head has constant
off-set.
Configuration Priority
Section 7.0 BS-3680/ISO 1438 Thin plate V notch (P600 = 7)
To calculate the flow rate this method requires only the angle of the weir notch () in degrees.
Section 7.1 BS-3680/ISO 1438 Thin plate V Notch Flow Calculation
The MultiRanger 200 calculates flow rate (Q) based on Absolute calculation method confirming to BS 3680 Part 4A standard for
thin plate weirs using the following equation:
Q = Ce x (8/15) x tan(/2) x (2g)
Value Table
Q Flow rate calculated and displayed by MultiRanger 200. The units will not be displayed and user must
know the measurement units used (liters/sec. or gallons/min. etc.).
Weir notch angle in degrees
g Acceleration due to gravity
Ce Discharge coefficient and is a function of weir notch angle .
h Head measured by the ultrasonic head, or any other level measuring device, mounted upstream from
the open channel measuring device. IMPORTANT: set in the same units selected in P005.
0.5
x (h)
2.5
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APPLICATION GUIDE
Section 7.1 BS3680/ISO 1438/1 V Notch Weir Configuration Table
Parameter number Description to explain the value Configuration Priority
P600 Set to 7 (BS 3680/ISO 1438/1 V Notch Weir) Must be configured.
P602 = (1 & 2) Enter the values of in degrees in index 1. In
index 2, view the value of discharge coefficient C
P603 Enter the value of maximum head in unit as set in
P005.
P605 Zero Head Off-set Must be configured because the zero of the weir
P608 Flow rate units Must be configured.
P607 Flow rate decimal Optional, configured to display the flow rate (Q).
P620 Low flow cut-off. Optional, to avoid totalizing at flows below this
P621 Auto zero head calibration Optional, configured if displayed head has
Note: Both Primary devices BS 3680 / ISO 4359 Rectangular Flume and the BS 3680 / ISO 1438/1 Thin Plate V notch weir
can also be configured for Ratiometric calculation in case the flow rate units are not supported in P608.
Must be configured.
e
Must be configured.
is above the channel zero.
Factory set to 2.
set level.
constant off-set.
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