Siemens MultiRanger 200 Application Manual page 3

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 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
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
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 #
P600 Set to 1 (exponential device)
P601 Enter the value of exponent x
P603 Enter the value of H
P604 Enter the value of Q
P606 Time units
P605 Zero Head Off-set
P607 Flow rate decimal
P620 Low flow cut-off
P621 Auto zero head calibration
MultiRanger 200 and Flow Configuration
Q = Q
Value Table
) as configured in P604. Its value is user provided, and is shown as
max
as configured in P603. Its value is provided by the user. Generally the same value as
max
Description
Must be configured.
Must be configured.
Must be configured.
max.
Must be configured.
max.
Must be configured.
Optional, configure only when the actual zero is above channel
bottom.
Optional, configured to display the flow rate (Q). Factory set to 2.
Optional, set to avoid totalizing at flows below this set level.
Optional, configure only if head displayed has constant off-set.
AG040303
APPLICATION GUIDE
X
(H/H )
max max
Configuration Status
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