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 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