Teledyne 4250, Инструкция по установке и эксплуатации, Страница: 66 / 204

4250 Flow Meter
Section 2 Programming
2-38
If you press the right arrow key several times, the sizes shown
below will move onto the screen:
If you select LEOPOLD-LAGCO, this will appear:
If you press the right arrow key several times, the sizes shown
below will move onto the screen:
If you select HS, the following display will appear:
If you select H, the following will appear:
If you select HL, the following will appear:
If you select TRAPEZOIDAL, this will appear:
This completes the section on WEIR/FLUME flow conversions.
Returning to Step 2 , SELECT FLOW CONVERSION: If you
select EQUATION the following will appear:
This step allows you to enter an equation that is appropriate for
your flow situation. The equation is expressed in the general
form of Q = k1H
P1
+ k2H
P2
, where Q = flow rate, k1 = a constant,
H = level or head, and
P1
is the power to which H is raised. k2
and
P2
are a second constant and power found in some equations.
If your equation has only one term, you should enter 0 for the
second constant.
SELECT PALMER-BOWLUS SIZE
• 24" • • 27" • • 30" • • 48" •
LEOPOLD-LAGCO FLUME SIZE
• 4" • • 6" • • 8" • • 10" • • 12" • • 15" • • 18" • • 21" •
LEOPOLD-LAGCO FLUME SIZE
• 24" • • 30" •
HS FLUME SIZE
• 0.4' • • 0.5' • • 0.6' • • 0.8' • • 1.0' •
H FLUME SIZE
• 5' • • .75' • • 1' • • 2' • • 2.5' • • 3' • • 4.5' •
HL FLUME SIZE
• 2.0' • • 2.5' • • 3.0' • • 3.5' • • 4.0' •
TRAPEZOIDAL SIZE
• LG 60 V • • 2" 45 WSC • • 12” 45 SRCRC •
ENTER EQUATION UNITS
Q =
XXX.XXX H^ X.XX + XXX.XXX H^ X.XX