WMP-Series
ISO
PLASTIC-BODIED MAGMETER
INSTRUCTIONS
WMP-SERIES PLASTIC-BODIED MAGMETER INSTRUCTIONS
3 inch
2 inch 1 inch
9 001:2008
CERTIFIED COMPANY
GENERAL INFORMATION and FEATURES
GENERAL INFORMATION
The WMP-Series is a full-bore, plastic-bodied electromagnetic
ow meter designed for ow and usage monitoring applications
in 1, 2 and 3 inch pipe. The polypropylene ow tube offers corrosion resistance to a wide range of chemicals. Its light weight
and easy to install or remove from the pipe for inspection.
With no moving parts, the magmeter permits unobstructed ow,
minimizing ow disturbances and hence, straight pipe requirements. The WMP-Series can be used in piping congurations
where there is little space between the meter and an elbow or
valve. The WMP-Series, like other magmeters, are resistant to
wear from sand and debris found in ground or surface water.
Since there are no bearings or propeller to wear out, downtime
and maintenance and repair costs are kept to a minimum.
Because there are no mechanical parts in the ow stream, the
meter tolerates high ows without damage.
The hinged, opaque polyethylene cover protects from dust and
UV rays, while permitting easy access to the LCD ow rate and
total display. The electronics housing is made of rugged powder-coated die-cast aluminum. It can be tted with cross-drilled
screws and seal wire for tamper-evidence. Flow rate and total
can be displayed in a variety of units, customer-selected and
factory-set.
The WMP-Series is used for tracking ow rate and total ow in
usage monitoring applications, for instance, in compliance with
regulatory requirements. These would include wells, industrial
wastewater, gray water, irrigation metering, turf and landscape
applications, and other water reclamation operations. In the
event of DC power loss, or when changing the battery, the WMP
is designed to retain the internal settings and ow total.
The WMP101 is externally powered via a 5-pin connector
and the power cable also provides pulse output for use with
a variety of Seametrics and other displays and controls for
remote reading, data logging, pulse-to-analog conversion, and
telemetry applications.
The WMP104 is a battery-operated unit for use when pulse
output is not required. The standard batteries are user
replaceable with an approximate 1-2 year life depending on
usage. An extended battery life option offers an estimated 2-4
year life depending on usage.
FEATURES
Polyethylene protective cover
LCD rate and total indicator
Powder-coated die cast-aluminum electronics housing
Cross-drilled screws (2) for tamper-evidence
316SS electrodes
Corrosion-resistant glass-lled polypropylene body
Lightweight for easy handling
Seametrics Fitting Kit
for 2 and 3 inch models
2 inch
1
4.625”
10.75”
4.40”
3.00”
7.30”
7.30”
2.625”
SPECIFICATIONS*
Pipe Size
Fittings
Pressure
Operating Temperature Range
Accuracy
Flow Range
Materials
Minimum
Maximum
Body
Electrodes
Electronics Housing
Display
Display Cover
Digits
Units
Security
Power
Pulse Output Signal
Pulse Rate
WMP101
WMP104
(WMP101 Only)
(WMP101 Only)
Low Frequency (-PxU)
Pulse
High Frequency (-HF)
/Unit
Empty Pipe Detection
Conductivity
Environmental
Electrical Connection (WMP101 Only)
1, 2 or 3 inch full port
1 inch NPTF, 2 or 3 inch ange clamps with 2 or 3 inch NPTF tting kit
150 psi or 10.3 bar working pressure @ 70˚ F
10˚ to 130˚ F (-12˚ to 54˚ C) operating, -40˚ to 176˚ F (-40˚ to 80˚ C) non-operating
+/-1% of reading (between 10% and 100% of max ow)
+/-3% of reading (between cutoff and 10% of max ow)
1 inch: 2.3 GPM (.145 LPS) 2 inch: 6 GPM (.38 LPS) 3 inch: 14 GPM (.88 LPS)
1 inch: 110 GPM (6.94 LPS) 2 inch: 300 GPM (18.9 LPS) 3 inch: 670 GPM (42.3 LPS)
Glass-lled polypropylene
316 stainless steel
Diecast aluminum, powder-coated
Polyethylene
Rate Total
6 8
Gallons/Minute, Cubic Feet/Second, Acre-Feet, Acre-Inch, Gallons, Gallons x 1000,
Cubic Feet/Minute, Liters/Second Cubic Feet, Liters, Megaliters, Cubic Meters
Liters/Minute, Cubic Meters/Minute
Cross-drilled screws and tamper-evident seal (optional)
10-30 Vdc @ 60 mA max (15 mA average)
NOTE: Using an unregulated power supply >18 Vdc may damage the meter due to AC line input voltage uctuation
6 each AA alkaline cells, replaceable. Estimated life is 1-2 years depending on usage (standard)
2 each C lithium batteries, replaceable. Estimated life is 2-4 years depending on usage (Extended battery life option)
Current sinking pulse, opto isolated, 32 Vdc max at 10 mA max
1 unit/pulse out, pulse width of 10ms depending on unit selection
1” 2” 3” Pulse width 1.1 ms, min - max frequency, 3 - 150 hz
80 30 13
Hardware/software, conductivity-based
>20 microSiemens/cm
NEMA 4X standard
5 pin male circular connector, mates to industry standard cable
*Specications subject to change • Please consult our website for current data (www.seametrics.com)
DIMENSIONS
Power/Output Cable
- WMP101 Only
1 Inch
4.3”
1.00”
5.50”
4.55”
8.8”
1.63”
5.38”
2 Inch
4.625”
3.25”
2.00”
5.50”
3 Inch
9.50”
6.03”
2.03”
2
FLOW RANGE, INSTALLATION
FLOW RANGE
1” 2” 3”
Gal/Min Liter/Sec Gal/Min Liter/Sec Gal/Min Liter/Sec
Minimum
2.3 .145 6 .38 14 .88
Maximum
110 6.94 300 18.9 670 42.3
INSTALLATION
End Connections. The meter comes with Banjo™ union-type
Piping Conditions. Installing the meter with a length of
straight pipe at least two times the diameter upstream and
one diameters downstream is highly recommended. Some
ange connections for ease in servicing the meter. To con-
nect these to piping ends, a variety of kits are available from
any Banjo dealer or from Seametrics.
piping conditions require more than this. See chart for rec-
ommendations.
Follow the diagram below to make the connections.
Step 1.
Position gasket
at either end
Step 2.
Place adapter
against gasket,
open screw clamps
to clear anges
Step 3.
Place screw-clamps
over both adapter
and meter anges
and tighten screws
NOTE: Above installation instructions are for WMP101/104-200 (2”) and WMP101/104-300 (3”) only. The WMP101/104100 (1”) is provided with intergrated NPT female threaded ends.
Position. This is an all position meter which can be installed either vertically or horizontally, register up, down or angled. How-
ever, entrained air or solids may make some positions preferable to others. See the position diagram for guidance.
Electrode
moved from
top by rotating
meter
Intermittent air
bubbles
miss electrode
Electrodes free
from sediment
build-up
WMPWMP
Intermittent air
bubbles
pass over
electrode
Possible
sediment
build-up
Recommended:
May prevent sediment
or bubble problems
Air bubbles and sediment on the
electrodes can affect accuracy
Less Ideal:
3
STRAIGHT and FULL PIPE RECOMMENDATIONS
(X = diameter)
Reduced Pipe
Elbows
2X
2X
WMP
WMP
1X
1X
Expanded Pipe
Swirling Flow:
5X
Partially Open
Buttery Valve
1X
WMP
1X
5X
WMP
Recommended:
Keep pipe full at meter
for accuracy
WMP
WMP
Recommended:
Keeps pipe full at meter for accuracy
WMP
Not Ideal:
Allows air pockets to form at meter
WMP
Not Ideal:
Post-valve cavitation can create air pocket
WMP
Recommended:
Allows air to bleed off
WMP
Not Ideal:
Air can be trapped
4
ELECTRICAL CONNECTIONS, CABLE CONNECTIONS and OPERATION
ELECTRICAL CONNECTIONS
WMP104. The WMP104 is battery-powered totally self-con-
tained and does not require any electrical connections (there
is no output on the WMP104 model).
CABLE CONNECTIONS
Gray: Pin 5 = Ground
White: Pin 4 = (–) Pulse
Blue: Pin 3 = (+) Pulse
Black: Pin 2 = (–) Power
Brown: Pin 1 = (+) Power
Shield Drain Wire
WMP101. A connector is provided on the outside of the
WMP101. To connect to the meter, plug the cable in and
hand tighten the retaining threads. Follow the diagram to
make connections. If you are using the pulse output, connect
power rst and determine that the meter is working properly
by observing the display. Then connect the pulse output.
OPERATION
Grounding (WMP101). For best performance, especially in
chemically noisy environments, the gray ground wire and the
bare drain wire should be connected together and to a good
earth ground as close to the meter as possible. Metal pipe
and ttings in contact with the uid should also be bonded to
the same earth ground with corrosion-resistant connections.
Display. The display reads ow rate and accumulated total,
in the units for which it was ordered. The top line is total, the
bottom line is rate, and indicators give the units (ac-ft, GPM
for instance.) Empty or partially-full pipe is automatically de-
tected and is indicated by a reading of “ – EP – “.
Battery. The standard batteries are user replaceable with an
approximate 1-2 year life depending on usage. An extended
battery life option offers an estimated 2-4 year life depending
on usage. On the battery-powered WMP104 there is a low-
battery indicator (“low bat”) when the battery voltage drops
below a certain point. Batteries should be changed within
four weeks of the appearance of this indicator.
5
MAINTENANCE, REPAIR and TROUBLE SHOOTING
MAINTENANCE AND REPAIR
There are no user-serviceable parts in the WMP-Series me-
ters except the batteries in the WMP104.
Battery Replacement. When the “low bat” indicator appears,
the batteries should be changed. Either six each AA alkaline
cells are required, or two each C lithium cells with integrated wiring harness, depending on power option ordered with
meter. To change the batteries, rst remove the four screws
which hold the top cover in place. Be careful not to lose the
wash ers. Move the top cover to one side and remove the
foam retainer which covers the battery tray or pack.
> For units with AA alkaline batteries, remove the old bat teries
from the battery tray, and replace them with fresh ones, taking care to fol low the polarity indicators in the battery tray.
TROUBLE SHOOTING
> For units with the optional C lithium batteries, carefully unplug each of the two battery wiring harness connectors. Slip
the batteries out from under the elastic retainer, and replace
them with the new batteries. Reconnect each of the two wiring harness connectors. The connectors are indexed for correct installation.
Replace the foam retainer, then put the top cover back in
place. Warning! Use Extreme Caution not to pinch wiring or
other assembly parts under the housing seal - this may cause
an ingress of water, voiding the product warranty. Replace the
four screws and washers, then tighten them securely using
cross-pattern to evenly compress the gasket. Environmental
and Safety note - take care to dispose of all batteries in ac-
cordance with Federal, State, and Local regulations.
Problem
Blank display:
WMP101
Blank display:
WMP104
Reading “-EP-”
Flow but no ow rate reading
Probable Cause Try...
No power to unit
Batteries dead or misinstalled
Empty or partly lled pipe
Excessive air pockets or foaming
Heavily coated electrodes
Check power supply
Check wiring
Check polarity, replace batteries
Rearrange piping to ensure full pipe
Remove meter and wipe electrodes
6
Seametrics Incorporated • 19026 72nd Avenue South • Kent, Washington 98032 • USA
(P) 253.872.0284 • (F) 253.872.0285 • 1.800.975.8153 • www.seametrics.com
LT-65200337-120611
REPLACES -101711
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