Filter
Top Products
59
Reference Manual
IP2030/RM, Rev AA
Section 4: Getting started
June 2014
Section 4: Getting started
Note (MCU901/MCU90F)
P113, P115, and P116 are in the menus SETUP / [CONTROLLER /] INPUT CHANNEL
/Ch1 Profile, /Ch1 NLP Data, and /Ch1 Post Scale respectively
Note (MCU902)
P113, P115, and P116 are in the menus SETUP / [CONTROLLER /] PV CALCULATION /
CHANNEL 1 / Ch1 Profile, /Ch1 NLP Data, and /Ch1 Post Scale respectively
P123, P125, and P126 are in the menus SETUP / [CONTROLLER /] PV CALCULATION /
CHANNEL 2 /Ch2 Profile, /Ch2 NLP Data, and /Ch2 Post Scale respectively
Note
When using the App Wizard, select Parshall or Vlarem at the prompt for a profile, and
the next prompt then allows selection of the pre-defined calculation e.g. Flume Flat 1
4.5.15 Set-up Kindsvater Shen (V-notch ISO1438) flow calculations
P113/P123 = “Kindsvater Shen”
This flow calculation requires just the angle of the V-notch to be entered in parameter P115
(or P125) to calculate a flow value over the weir. The head level measurement needs to be in
units of metres and the resultant flow value is in cubic metres per second (m
3
/s).
Note
Flow calculations require the transmitter input channel(s) to be providing continuous
level measurements (see page 43). Also, P200 (control unit PV units) must be changed
from the default % to the required flow measurement units.
When using the App Wizard, select V-Notch (ISO1438) at the prompt for a profile.
The App Wizard allows the selection of alternative flow units for the output result.
4.5.16 Set-up exponential flow law calculations
P113/P123 = “Flow calculation”
Exponential laws are supported by selecting this profile option, and manually entering values of
k-factor, power, and mul into parameters P115 (or P125).
The output is derived from the input value using: Q = k x (mul x Input)
pwr
As an example, consider a an application with a rectangular weir and level measurements in ft.
When the flow rate (Q) is 2000 GPM, the gauged head (Input) is known to be 0.792 feet.
Terms mul is 1.000 and pwr is 1.5 for a rectangular weir.
Therefore, k is calculated as Q / (mul x Input)
pwr
) = 2000 / (1 * 0.792)
1.5
= 2837.5
Note
Flow calculations require the transmitter input channel(s) to be providing continuous
level measurements (see page 43). Also, P200 (control unit PV units) must be changed.