WMX-SERIES
9 001:2008
CERTIFIED COMPANY
ISO
MUNICIPAL/INDUSTRIAL MAGMETER
INSTRUCTIONS
WMX-SERIES MUNICIPAL/INDUSTRIAL MAGMETER INSTRUCTIONS
WMX104
WMX101-168
WMX104-300
TABLE OF CONTENTS
General Information
General Information, Features ................................................................................................... Page 1
Specications
Specications, Flow Range ............................................................................................................ Page 3
Installation and Grounding
Positioning the Meter,
Calibration, Chemical Injection, Metal Pipe Installations, Plastic Pipe Installations....................... Page 4
Straight Pipe Recommendations ................................................................................................ Page 5
Full Pipe Recommendations ...................................................................................................... Page 6
Inputs/Outputs and Operation
Power, Pulse Output, High Frequency, K-Factor, Display Reading ................................................... Page 7
Connections Diagrams
AO55/WMX101, FT420/WMX101, DL75 or DL76/WMX101 ........................................................... Page 8
Straight Pipe Recommendations, Full Pipe Recommendations, Fittings,
Troubleshooting
Problem, Probable Cause, Things to Try .................................................................................... Page 9
TABLES, DIAGRAMS & CHARTS
Features ...................................................................................................................................Page 1
Specifications .......................................................................................................................... Page 3
Flow Range ............................................................................................................................. Page 3
Metal Pipe Installation, Plastic Pipe Installation ..................................................................... Page 4
Straight Pipe Recommendations ............................................................................................. Page 5
Full Pipe Recommendations .................................................................................................... Page 6
High Frequency Output ............................................................................................................. Page 7
Display Readings ..................................................................................................................... Page 7
Connections Diagrams ............................................................................................................. Page 8
Troubleshooting ......................................................................................................................... Page 9
GENERAL INFORMATION
The WMX-Series are anged electromagnetic owmeters
for use in 3” to 10” pipe in municipal or industrial water and
wastewater applications where propeller meters have typically
been used in the past. Because the WMX has no moving
parts and has electrodes designed to discourage fouling, this
magmeter performs well and requires much less frequent
maintenance in applications where debris would impede
propeller meters. There is no rotor to stop turning or bearings
to wear out. Minimal straight pipe requirements allow WMXSeries meters to be used in piping congurations where there
is little space between the meter and an elbow.
In chemical injection applications, the chemical injection point
must be placed downstream of the magmeter OR far enough
upstream for complete mixing to occur before the uid
reaches the meter.
The submersible units, -168 option, are rated IP68 (NEMA 6P)
for applications where the meter may be under water up to a
depth of 3 meters for prolonged periods of time.
Rate and total indication are standard on both models. Units
are customer-selected and factory-set. No set-up is required.
The WMX101 is externally powered with 8-32 Vdc at 30
mA max (see NOTE in Specications). Two Lithium 3.6V
“AA” batteries provide auxiliary power during power failures,
allowing the meter to continue recording ow rate and total
without interruption for the duration of the outage. Where
external power loss is infrequent, battery life exceeds 10 years.
The 20-foot 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. High frequency pulse rate (required
for use with 4-20 mA converters) is standard; additional pulse
rates are optional.
The WMX104 is a battery-operated unit for use when pulse
output is not required. Two Lithium 3.6V “D” batteries provide
power and are replaceable with an approximate 1-year life
under continuous use, or more depending on the duty cycle.
An optional input/output cable can be installed post-factory if
needed for changing applications.
FEATURES
Rate and total indicator
Powder-coated diecast-aluminum electronics housing
Tamper-evident security seal &
cross-drilled screws (2) for tamper-evidence
Internal Data Logger (Optional)
Power/Output cable port access, tamper-sealed
(NOTE: WMX101 comes with standard 20’ cable installed)
Welded steel epoxy-coated ow tube
316SS electrodes
Dual durometer rubber liner
Flanges, ANSI 150 lb. drilling
Equalization lug
WMX104
Page 1
GENERAL INFORMATION
FEATURES Continued
Rate and total indicator
Tamper-evident security seal &
cross-drilled screws (2) for tamper-evidence
Internal Data Logger (Optional)
Power/Output cable port access, tamper-sealed
(NOTE: WMX101 comes with standard 20’ cable installed)
Powder-coated ductile cast iron body & electronics housing
Glass lled molded plastic liner
316SS electrodes
Flanges, ANSI 150 lb. drilling
Rate and total indicator
Tamper-evident security seal &
cross-drilled screws (2) for tamper-evidence
Power/Output cable port access, tamper-sealed
(NOTE: WMX101 comes with standard 20’ cable installed)
Internal Data Logger (Optional)
Powder-coated ductile cast iron electronics housing
Equalization lug
WMX104-300
(IP68 housing standard for 3” models)
Equalization lug
Page 2
IP68 Housing Option
(For 4”-10” meter;
standard for 3” models)
SPECIFICATIONS
SPECIFICATIONS*
Pipe Sizes
Fittings
Pressure
Temperature Operating
Accuracy
Materials Body (3” Only)
Body (4”-10”)
Liner (3” Only)
Liner (4”-10”)
Electronics Housing
Electrodes
O-ring (3” Only)
Display
Power
Pulse Output
High Frequency
Pulse/Liter
Conductivity
Empty Pipe Detection
Environmental
Non-Operating
Digits
Units
Signal
Pulse Rates
Pulse/Gal
3”,4”, 6”, 8”, 10”
ANSI 150 lb. drilling
150 psi (10.3 bar) working pressure
10˚ to 130˚ F (-12˚ to 54˚ C)
-40˚ to 158˚ F (-40˚ to 70˚ C)
+/- 1% of reading for ow between 10% to 100% of max ow
+/- 2% of reading for ow from cutoff to 10% of max ow
Ductile cast iron, powder coated w/NSF61 listed epoxy powder
Welded steel, epoxy-coated
Noryl®
Dual durometer rubber
Diecast aluminum, powder-coated (non-IP68) Ductile Cast Iron (IP68)
316 stainless steel
EPDM
Rate Total
5 8
Gallon/Minute, Liter/Minute, Liter/Second, Gallon, Gallon x 1000, Liter, Liter x 1000, Mega Liter,
Cubic Feet/Minute, Cubic Meter/Hour, Cubic Meters, Cubic Meter x 1000, Cubic Feet,
Million Gallon/Day, Mega Liter/Day Cubic Feet x 1000
WMX101: 8-32 Vdc at 30 mA max, with auxiliary battery for continuous operation during power failures
NOTE: Using an unregulated power supply >18 Vdc may damage the meter due to AC line input voltage uctuation
WMX104: 2 Lithium 3.6V “D” batteries, replaceable, 1 year life under continuous use.
WMX101: Current sinking pulse, opto-isolated, 30 Vdc at 10 mA max
WMX104: Pulse output available only with addition of post-factory output cable
High Frequency (default); 10 units/pulse; 100 units/pulse; 1000 units/pulse
3” 4” 6” 8” 10”
25.228
6.665 4.323 1.666 0.883 0.568
>20 microSiemens/cm
Hardware/software, conductivity-based
NEMA 4X Standard (IP68/NEMA 6P Option)
16.362 6.307 3.344 2.150
*Specications subject to change. Please consult our website for the most current data (www.seametrics.com).
FLOW RANGE (3” - 10”)
Meter
Size
Gal/Min Liter/Sec Gal/Min Liter/Sec Gal/Min Liter/Sec Gal/Min Liter/Sec Gal/Min Liter/Sec
3” 4” 6” 8” 10”
Minimum 7.5 . 47 12 .75 32 2 60 3.8 95 6
Maximum 700 44.2 1,000 63 2,400 151.4 4,400 277. 6 7,000 441.6
Page 3
INSTALLATION and GROUNDING
INSTALLATION
Caution: These ow sensors are not recommended
where installation fault may expose the ow sensor to
boiler pressure and temperature. Maximum
recommended temperature is 130˚ F.
Positioning the Meter. These meters can be installed
horizontally, vertically, and in any radial position. Using a
check valve on the upstream side of the meter, and/or an air
vent (vacuum relief valve) in the same, unobstructed run of
pipe as the meter, is required in any installation where the
meter may be exposed to suction when the system is not in
normal operation. Suction can cause damage to the liner.
Liner damage caused by suction, without the use of a check
valve and/or air vent, may void the warranty.
Straight Pipe Recommendations. As with most flow
meters, the WMX requires some straight pipe before and
after the meter for best accuracy. However, the ability of
electromagnetic meters to average the ow across the entire
pipe allows for shorter straight pipe recommendations than
most mechanical meters (see page 4).
Full Pipe Recommendations. All magmeters require a
method for determining that the pipe is empty, to prevent false
reading. This meter is designed to go to zero reading if one
or more electrodes is exposed. For highest accuracy, install
the meter so that the pipe will be full when there is ow. If air
bubbles may be present in the pipe or sludge accumulation
is an issue, rotate the meter by one ange hole to position
the control housing at a 45˚ angle (see diagrams on page 5).
Fittings. The WMX anges have standard ANSI 150 lb. drilling
and mate with any other ANSI 150 lb. ange.
Calibration. The WMX is factory-calibrated and will not require
any form of eld calibration.
Chemical Injection. When any magmeter, by any manufacturer, is used in a chemical injection application, the chemical
injection point must be placed downstream of the magmeter OR far enough upstream for complete mixing to occur
before the uid reaches the meter. When unmixed chemical
alternates with water passing through the meter, the rapid
changes in conductivity may cause sudden spikes and drops
in the meter’s reading, resulting in inaccurate measurement.
The magmeter will restabilize, however, with a steady ow of
uid of uniform conductivity.
Caution: In chemical injection applications, install
chemical injection point downstream of magmeter,
or far enough upstream to allow complete mixing of
uids before the meter.
EQUALIZATION AND GROUNDING
Metal Pipe Installations. To equalize the electrical potential
of the uid, the WMX meter, and the surrounding pipe, secure
the ange plates (factory-installed on the equalization lug) to
both pipe anges at one of the bolt holes, as shown below.
Be sure the lockwasher ts between the pipe ange and the
ange plate.
Meter Flange
Pipe Flange
Lockwasher
Flange Plate
Equalization Lug
Metal
Pipe
Meter
Flange
Bolt
Pipe
Flange
Metal
Pipe
Equalization Diagram
Run wire from equalization lug to both pipe anges;
secure ange plates under bolt heads as shown.
WARNING: ELECTRICAL SHOCK HAZARD When
the meter is externally AC powered (WMX101 or
adapted 104), the piping system must be grounded
to meet national and local electrical safety codes.
Failure to do so can result in electrocution.
Plastic Pipe Installations. When the WMX is installed in a
plastic piping system, it is not necessary to use the equalization straps, but very important to ground the meter to avoid
electrical shock hazard and electrostatic interference with
meter function.
Meter Equalization Lug
Plastic Pipe Plastic Pipe
Exothermically weld when
corrosion is a concern
#6 AWG Stranded
Copper Ground Wire
Ground Clamp
Earth
8’ Ground Rod
Page 4
STRAIGHT PIPE RECOMMENDATIONS
(X = diameter)
Reduced Pipe
Two Elbows In Plane
Two Elbows, Out Of Plane
1X
2X
WMX
1X
2X
WMX
1X
2X
Expanded Pipe
Swirling Flow
Propeller Meter
5X
5X
WMX
WMX
5X
1X
1X
WMX
1X
Swirling Flow
Partially Open
Buttery Valve
WMX
Page 5
FULL PIPE RECOMMENDATIONS
Recommended:
Keep pipe full at meter for accuracy
WMX
WMX
Not Ideal:
Allows air pockets to form at meter
WMX
Recommended:
Keeps pipe full at meter for accuracy
WMX
Recommended:
Allows air to bleed off
Intermittent air
Electrode
moved from
top by rotating
meter
WMX
miss electrode
Electrodes free
from sediment
bubbles
build-up
WMX
Not Ideal:
Post-valve cavitation can create air pocket
WMX
Not Ideal:
Air can be trapped
Intermittent air
bubbles
pass over
electrode
Possible
sediment
build-up
WMX
Page 6
Recommended:
Improved accuracy results from
unimpeded electrodes
Not Ideal:
Air bubbles and sediment on the
electrodes can affect accuracy
INPUTS/OUTPUTS and OPERATION
WMX101
External Power (WMX101). The WMX101 operates on 8-32
Vdc at 30 mA max external power (see WARNING in wiring
diagrams). The display reads “P” when external power is in
use (see illustration below).
The Lithium battery pack installed in the WMX101 serves as
backup in the event of a power failure, when it will keep the
meter operating without interruption for the duration of the
outage. When battery power in is use, the WMX101 display
continues to read out the rate and total, but the “P” indicating
external power is extinguished. When power resumes, the
WMX101 will seamlessly return to normal power mode, and
the “P” will again display.
When used for occasional emergency backup, battery life is
approximately ten years.
Pulse Output (WMX101). The WMX101 cable also provides
pulse output that can be used for remote reading, 4-20 mA
signal conversion, datalogging, and telemetry applications.
See page 7 for connection diagrams to Seametrics controls
and displays.
Pulse Output (WMX104). Pulse output capabilities are built
in to the WMX104, but cannot be utilized without the addition
of an optional output cable. A WMX104 can be retrotted with
this cable in the eld. IMPORTANT: When eld installing the
input/output cable, be sure to snugly tighten the cable strain
relief to prevent water ingress.
OPERATION
Caution: There are no user-adjustable
connections or settings inside the display
housing. Use caution when opening the
housing for a battery change, to avoid
damage to internal components.
Display Reading. The WMX display has two lines, the bottom
line for ow rate and the top line for accumulated total.
Measurement units are pre-ordered and factory-set and can
be changed in the eld only by an authorized individual.
Refer to the diagrams below to read your display.
Note: For data logger setup and operation, refer to Flow
Inspector Manual
Pulse rates are selected by the customer at time of order,
factory-set, and can only be changed in the field by an
authorized Seametrics dealer. Three pulse rates are possible:
One pulse per ten gallons (or liters), one pulse per thousand
gallons (or liters), or High Frequency (required for use with
4-20 mA converters; see below):
High Frequency Output/K-Factor
Meter Size Pulses per Gallon Pulses per Liter
3” 25.228 6.665
4” 16.362 4.323
6” 6.307 1.666
8” 3.344 0.883
10” 2.150 0.568
WMX104
Battery Power (WMX104). The WMX104 is powered by a
non-rechargeable battery pack with an average lifespan of
one year under typical (full-time) use. Actual lifespan will vary
from application to application, depending on the duty cycle.
“Low Batt” will display when there are approximately three
days of use left in the batteries (see illustration). Replacement
instructions come with the custom battery pack available from
your dealer or Seametrics.
External Power Indicator
(WMX101 Only)
Battery Power
(WMX104 Standard Operation)
(WMX101 Backup Operation)
Low
Batt
Low Battery Indicator
(3 days remaining)
No Power
Empty Pipe
Meter Installed Backwards
Page 7
CONNECTIONS DIAGRAMS (WMX101)
The WMX101 requires a power source of 8 to 32 Vdc at 30
mA max (see WARNING). The WMX101 power cable also
serves as a pulse output if needed for remote reading, data
logging, signal conversion, or telemetry.
AO55/WMX101
Blue
Do
Not
{
Orange
Use
4-20 mA
Power
5
6
4
3
2
1
0
S
Sensor
Not
Used
Frequency
5
6
4
7
8
9
7
3
8
2
9
1
0
5
5
6
6
4
4
7
7
3
3
2
8
8
2
9
9
1
1
0
0
Power Supply
at 30 mA max
(see WARNING)
White (-)
Green (+)
Black
Red
(-) (+)
8-32 Vdc
AO55W Pulse-to-Analog Converter
FT420/WMX101
External Power Input Required - 12-32 Vdc
WMX101 Cable Color Codes
Orange and Blue: Serial Output (Do Not Use)
Green (+) and White (-): Pulse Output, 30 Vdc max, 10 mA max
Red (+) and Black (-): External Power, 8-32 Vdc at 30 mA max
Drain: Connect to earth ground (see WARNING)
WMX101 Cable
Shielded
Drain Wire
Direct Burial Cable
22 AWG Stranded
WARNING: Using an unregulated power
supply >18 Vdc may damage the meter
due to AC line input voltage uctuation.
WMX101
PASSTHRU
PULSE
SCALED
PULSE
Power
4-20 mA
Input
Sensor
Not
Used
FT420W Remote Rate/Total Display
DL75 or DL76/WMX101
Battery
-
S
+
Not
Used
Blue
Do
Not
{
Orange
Use
White (-)
Green (+)
Black
Red
(-) (+)
Power Supply
8-32 Vdc
at 30 mA max
(see WARNING)
Blue
Do
Not
{
Orange
Use
White (-)
Green (+)
Black
Red
Drain Wire
WMX101 Cable
Shielded
Direct Burial Cable
22 AWG Stranded
WARNING: Using an unregulated power
supply >18 Vdc may damage the meter
due to AC line input voltage uctuation.
WMX101 Cable
Shielded
Direct Burial Cable
22 AWG Stranded
WMX101
WMX101
DL75W or DL76W Data Logger
Page 8
(-) (+)
Power Supply
8-32 Vdc
at 30 mA max
(see WARNING)
Drain Wire
WARNING: Using an unregulated power
supply >18 Vdc may damage the meter
due to AC line input voltage uctuation.
TROUBLESHOOTING
Problem
Blank Display
Flow rate steadily reads
zero when there is ow
Flow rate intermittently
drops when there is ow
Probable Cause Try...
Dead battery (WMX104)
No power plus dead battery (WMX101)
Flow is below cutoff (very low)
Pipe is not full
Meter is installed backwards
(display reads [ - ] )
Power connections reversed (WMX101)
Fluid conductivity <20microSiemens/cm
Pipe is not full
Replace battery pack
Replace battery pack, check power
connections
Reading will resume when ow increases
Reposition meter for full pipe (see page 4)
Note ow direction arrow, reverse meter
Change power connections
Select another ow meter
Reposition meter for full pipe (see page 4)
Jumpy reading
Meter reads, but no
pulse output (WMX101)
Output pulses missing
Missing or incorrect ground wire
Pulsing ow
Rapidly changing conductivity
(in chemical injection applications)
External device needs pull-up resistor
Reversed leads (polarity sensitive)
Meter not reading
Check for proper ground
Use external power source
(allows more ow averaging)
Install chemical injection line downstream
of meter (or far enough upstream to allow
complete mixing of uids before meter)
Add pull-up resistor
(For details, refer to ‘Connecting to PLCs’
Technical Bulletin at www.seametrics.com)
Change output connections
Check display
Page 9
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-65200289-060713
6/7/2013
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