Emerson Rosemount 3100 Series - Page 125

Reference Manual
00809-0100-4840, Rev. BA
July 2008
F-11
Rosemount 3100 Series
P011 = “V-Notch-5/2”
This setting is applicable when flow measurements involving an open channel
with a V-notch weir is required.
The rate of flow through a V-notch is calculated using:
Q = k* h
pwr
where h is the live liquid level, Q is flow rate per second, Pwr is the power
(P014) and k is a user-factor (P013).
Setting-up Procedure for “V-Notch-5/2”:
1. Select “V-Notch-5/2” option using P011.
2. Enter the k-factor in P013.
Figure F-6. V-Notch Weir
Example (Using 5/2 Power Law)