35
58-610 Model R82 Radar Transmitter
Display
Action
Comment
17
Flow Setup
(continued from
previous page)
Totalizers: Total R Mode
Total R Mode
allows the user to enable and disable the
resettable totalizer. The default mode is disabled.
Totalizers: Total R Mult
The
Total R Mult
screen allows selection of the multiplier
to be used for the resettable totalizer. The function of the
totalizer multiplier is such that if the chosen units are gal-
lons and the multiplier is 100, the totalizer value will
increment one whole unit for each 100 gallons. Select
1
,
10
,
100
,
1,000
(default),
10,000
or
100,000
.
Totalizers: Totalizer R
This is a read-only screen that displays the present value
of the resettable totalizer.
Totalizers: Totalizer R Time
This is a read-only screen that displays the time that has
elapsed since the resettable totalizer has been totalizing flow.
Totalizers: Totalizer R
The
Totalizer R Reset
screen allows the user to reset the
total flow and elapsed time of
Totalizer R
to zero
(
Totalizer NR
is non-resettable). Since this action will
permanently lose this data, a second chance is provided
with an “Are you sure?” screen.
18
Flow
Generic Equation
Enter Flow Information
Using Generic Equation
Generic Eqn Factors
Generic Equation
is a discharge
flow equation in the form of Q = K(L-CH)Hn, where Q =
flow (Cu Ft/Second), H = Head (Feet), K = a constant,
and L, C and n are user input factors that depend on
which Flow Element is being used. Make sure the flow
equation is in the form of Q = K(L-CH)Hn, and proceed to
enter the values of K,L,C,H and n.
Q = K(L-CH)H
n
Using the factors above, the equation becomes:
Q = 3.33 (8-0.2H) H
1.5
The discharge flow value for a Head value of 3 feet becomes 128.04
Cubic Ft/Second
. If
GPM was selected for the Flow Units, the R82 Measured Values screen would display this
value converted to 57,490 GPM.
Generic Equation Example
(using equation for an 8' rectangular weir w/ end contractions)
Q =
Cubic Ft/Second
flow rate
L = 8' (weir crest length in feet)
H = Head value
K = 3.33 for
Cubic Ft/Second
units
C = 0.2 (constant)
n = 1.5 as an exponent
2.6.6.3 Radar Transmitter User Menu—Flow and Level (cont.)
Note: Press UP arrow 5 times to reach screen where menu language can be chosen.
