Siemens Multiranger 200 Guida utente

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

AG040305

Flow Application Configuration

Configuring the MultiRanger 200 to measure open channel flow

Specific parameter setting to configure the following primary measurement devices:

Objective:

• exponential devices

• Palmer-Bowlus Flume

• H-Flume

• Universal Linear Flow Calculation

• Universal Curved Flow Calculation

• BS 3680/ISO 4359 Rectangular Flume

• BS 3680/ISO 1438/1 Thin Plate V-Notch Weir

Equipment: MultiRanger 200, transducer, IR Hand Held Programmer or Dolphin Plus software, and primary

measurement device.

While every effort was made to verify the following information, no warranty of accuracy or usability is expressed or implied.

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

Sets the range of head measurement. Often equal to the maximum

head.

P801 G Range Extension Permits the liquid level to go below the zero point to the amount set

here without indicating an LOE condition (pre-set is 20% of span).

* Gmeans ‘global.’ If f you have dual channel unit then the index is either 1or 2. For both, select 00.

** Here we have chosen one value. Other choices can be selected from the manual as needed.

APPLICATION GUIDE

MultiRanger 200 and Flow Configuration AG040303 2 of 10

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

Universal Linear Flow

Calculation

Universal Curved Flow Calculation

enables the MultiRanger 200 to calculate the flow rate based on Ratiometric

method.

Parameter Parameter Index Value

P600

(dual channel 1or

2, if both enter 00)

Choose from 0 through to 7

Select one value from the following list of primary measuring devices and methods per channel application.

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

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

• Parshall

• Leopold Lagco

• Cut Throat

• any other single exponent

primary measuring device,

whose exponent value is

known.

MultiRanger 200 and Flow Configuration AG040303 3 of 10

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 = Qmax(H/Hmax)X

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.).

Qmax Maximum flow (at maximum head Hmax) as configured in P604. Its value is user provided, and is 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

Hmax Maximum Head Hmax as configured in P603. Its value is provided by the user. Generally the same value as

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.

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 xMust be configured.

P603 Enter the value of Hmax. Must be configured.

P604 Enter the value of Qmax. Must be configured.

P606 Time units Must be configured.

P605 Zero Head Off-set Optional, configure only when the actual zero is above channel

bottom.

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.

MultiRanger 200 and Flow Configuration AG040303 4 of 10

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 = Qmax x f(H/ Hmax)/f(Hmax/ D)

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.).

Qmax Maximum flow (at maximum head Hmax) as configured in P604. Its value is user provided, and is

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

Hmax Maximum Head Hmax as configured in P603. Its value is provided by the user. Generally the same

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).

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 Hmax.Must be configured.

P604 Enter the value of Qmax. Must be configured.

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.

Must be configured.

P606 Time units Must be configured.

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.

MultiRanger 200 and Flow Configuration AG040303 5 of 10

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 = Qmax x f(H/ Hmax)/f(Hmax/ D)

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.).

Qmax Maximum flow (at maximum head Hmax) as configured in P604. Its value is user provided, and is 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

Hmax Maximum Head Hmax as configured in P603. Its value is provided by the user. Generally the same 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 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 Hmax. Must be configured.

P604 Enter the value of Qmax. Must be configured.

P605 Zero Head Off-set Configured only when the actual zero is

above channel zero.

P606 Time units. Must be configured.

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.

MultiRanger 200 and Flow Configuration AG040303 6 of 10

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 = Qmax x f(H)/f(Hmax)

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.).

Qmax Maximum flow (at maximum head Hmax) as configured in P604. Its value is user provided, and is 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.

Hmax Maximum Head Hmax as configured in P603. Its value is provided by the user. Generally the same 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.

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 Hmax. Must be configured.

P604 Enter the value of Qmax. Must be configured.

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.

Must be configured.

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.

Must be configured.

P605 Zero head off-set Optional, configure only when the

actual zero is above channel zero.

P607 Flow rate decimal Optional, configured to display the

flow rate (Q). Factory set to 2

MultiRanger 200 and Flow Configuration AG040303 7 of 10

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 = Qmax x f(H)/f(Hmax)

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.).

Qmax Maximum flow (at maximum head Hmax) as configured in P604. Its value is user provided, and is 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.

Hmax Maximum Head Hmax as configured in P603. Its value is provided by the user. Generally the same 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.

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 Hmax. Must be configured.

P604 Enter the value of Qmax. Must be configured.

P606 Time units Must be configured.

P610

(Secondary

Indices 1 – 32

max)

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. Must be configured.

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.

Must be configured.

P605 Zero Head Off-set Configured only when the actual zero

is above channel zero

MultiRanger 200 and Flow Configuration AG040303 8 of 10

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.

CvVelocity coefficient calculated by MultiRanger 200

CsShape coefficient (= 1 here)

CdDischarge coefficient calculated by MultiRanger 200

MultiRanger 200 and Flow Configuration AG040303 9 of 10

APPLICATION GUIDE

Section 6.1 BS-3680/ISO 4359 Rectangular Flume Flow Calculation Table

Parameter #

Description Priority

Configuration 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 Cvand Cd

respectively

Must be configured.

P605 Zero Head Off-set Must be configured due to hump height of the

flume.

P608 Flow rate units Must be configured.

P607 Flow rate decimal is configured. Optional, configured to display the flow rate (Q).

Factory set to 2.

P620 Low flow cut-off (Its optional), to avoid totalizing at flows below

this set level.

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.

Optional, configured if displayed head has constant

off-set.

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 = Cex (8/15) x tan(/2) x (2g)0.5 x (h)2.5

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.).

 Weir notch angle in degrees

g Acceleration due to gravity

CeDischarge 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.

MultiRanger 200 and Flow Configuration AG040303 10 of 10

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 Ce

Must be configured.

P603 Enter the value of maximum head in unit as set in

P005.

Must be configured.

P605 Zero Head Off-set Must be configured because the zero of the weir

is above the channel zero.

P608 Flow rate units Must be configured.

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.

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.

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