Canada’s Instrumentation Leader Since 1946.

Palmer Bowlus Flumes and Options

The Palmer Bowlus metering flume has been widely used for measuring water and wastewater in open channels or pipelines that are not under any pressure. This flume is normally installed in a “U” shaped channel fed by a pipeline such as storm drains and sewers. This convenient flume requires little redesign or special modification of […]

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The Palmer Bowlus metering flume has been widely used for measuring
water and wastewater in open channels or pipelines that are not under
any pressure. This flume is normally installed in a "U" shaped channel
fed by a pipeline such as storm drains and sewers. This convenient flume
requires little redesign or special modification of circular conduits
for installation.

Rather than try to make the flow application fit a particular type of
flume, we carefully analyze the parameters so we can select an
appropriate flume for the application. Options and modifications are
available to ensure that the customer’s requirements are fully met, and
that additional instruments are easily interfaced with the flumes.

PALMER BOWLUS FLUME CHARACTERISTICS

  • Low Head Loss
  • Minimum flow restriction
  • Measurment accuracy
  • Requires little modification
  • Easy to install

Untitled Document

Flume
Size
Max.
Upstream

Min.
Head
Minimum Flow Range

Max.
Head

Maximum Flow Rate

Inches

Slope %

Feet
CFS

MGD

GPM

Feet

CFS

MGD

GPM

4
2.2
0.02
0.001
0.001
0.56
0.25
0.121
0.078
54.5
6
2.2
0.03
0.004
0.002
1.68
0.35
0.295
0.19
132
8
2
0.03
0.008
0.005
3.43
0.50
0.69
0.445
310
10
1.8
0.05
0.014
0.009
6.17
0.60
1.12
0.722
502
12
1.6
0.05
0.016
0.011
7.35
0.70
1.68
1.08
752
15
1.5
0.06
0.027
0.017
12.10
0.90
3.09
1.99
1385
18
1.4
0.08
0.051
0.033
22.70
1.05
4.61
2.98
2070
21
1.4
0.10
0.081
0.052
36.50
1.25
7.04
4.54
3160
24
1.3
0.10
0.096
0.062
43.00
1.40
9.47
6.11
4250
27
1.3
0.11
0.126
0.081
56.40
1.60
13.1
8.44
5870
30
1.3
0.20
0.346
0.223
155.00
1.75
16.5
10.7
7410

 

Typical Options

  • Staff Gauge – available in various widths and markings including flow data
  • Stilling Well – Integral or remote, 6", 8", 10" or 12" ID, with or without plug
  • Bubbler Tube – Stainless steel, 1/4" ID, integral to flume
  • Sampler Tube – Stainless steel, 3/8" ID, integral to flume
  • Inlet and Outlet End COnnection – Integral or removable
  • Pipe Connection – Neoprene boot or ANSI pipe flange connection
  • Special Chemical Resistant Fabrication – pH range of 1 to 14
  • Ultrasonic Transducer Bracket – Fixed at 14" or 24" or adjustable
  • pH Sensor Cavity – Fabricated to fit most sensors
  • Wing Walls and Bulk Heads – Custom fabricated to meet job requirements
  • Nesting Options – Standard or special design
  • Energy Absorption Racks – Fixed or removable
  • Standard or Special Depths – Including surge boxes
  • Enclosed Flumes – For odor control
  • Flume Covers – Grating, fibre sheeting, clear polycarbonate
  • Montana Cut Design – Available in all standard sizes
  • Special Design – Will meet your special project needs