Electromagnetic Flow Meters Manual
Contents
1. DL75 or DL76 WMX101 O O White WARNING Using an unregulated power supply gt 18 may damage the meter due to AC line input voltage fluctuation Drain Wire WMX101 Cable Shielded Battery Direct Burial Cable lt lt 22 AWG Stranded WMX101 8 S 9 Green ii Black Not Red M Power Supply 8 32 30 mA DL75W DL76W Data Logger see WARNING Page 8 WARNING Using an unregulated power supply gt 18 Vdc may damage the meter due to AC line input voltage fluctuation Drain Wire TROUBLESHOOTING Problem Blank Display Flow rate steadily reads zero when there is flow Flow rate intermittently drops when there is flow Jumpy reading Meter reads but no pulse output WMX101 Output pulses missing Probable Cause 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 lt 20microSiemens cm Pipe is not full Missing or incorrect ground wire Pulsing flow Rapidly changing conductivity in chemical injection applications External device needs pull up resistor Reversed leads2. ability of electromagnetic meters to average the flow 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 flow If air bubbles may be present in the pipe or sludge accumulation is an issue rotate the meter by one flange hole to position the control housing at a 45 angle see diagrams on page 5 Fittings The WMX flanges have standard ANSI 150 Ib drilling and mate with any other ANSI 150 Ib flange Calibration The WMX is factory calibrated and will not require any form of field calibration Chemical Injection When any magmeter by any manufac turer is used in a chemical injection application the chemical injection point must be placed downstream of the magme ter OR far enough upstream for complete mixing to occur before the fluid 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 flow of fluid of uniform conductivity Caution In chemical injection applicat
3. 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 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 25 228 16 362 6 307 3 344 2 150 Pulses per Liter 6 665 4 323 1 666 0 883 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
4. polarity sensitive Meter not reading Try Replace battery pack Replace battery pack check power connections Reading will resume when flow increases Reposition meter for full pipe see page 4 Note flow direction arrow reverse meter Change power connections Select another flow meter Reposition meter for full pipe see page 4 Check for proper ground Use external power source allows more flow averaging Install chemical injection line downstream of meter or far enough upstream to allow complete mixing of fluids 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 Seametrics Incorporated 19026 72nd Avenue South Kent Washington 98032 USA P 253 872 0284 253 872 0285 1 800 975 8153 www seametrics com LT 65200289 060713 6 7 2013
5. PIPE RECOMMENDATIONS X diameter Reduced Pipe Two Elbows In Plane Two Elbows Out Of Plane Expanded Pipe Swirling Flow Propeller Meter Swirling Flow Partially Open Butterfly Valve Page 5 FULL PIPE RECOMMENDATIONS Recommended Keep pipe full at meter for accuracy WMX Recommended Keeps pipe full at meter for accuracy E Recommended Allows air to bleed off Intermittent air bubbles miss electrode Electrode moved from top by rotating meter Electrodes free from sediment WMX build up Recommended Improved accuracy results from unimpeded electrodes Page 6 gen Not Ideal Allows air pockets to form at meter Not Ideal Post valve cavitation can create air pocket V X 4 Not Ideal Air can be trapped Intermittent air bubbles pass over electrode Lel Possible sediment build up 4 WMX 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 WMX1041 display
6. The WMX101 power cable also serves as a pulse output if needed for remote reading data logging signal conversion or telemetry 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 i WMX101 Cable Shielded Direct Burial Cable lt lt WMX101 22 AWG Stranded WARNING Using an unregulated power supply gt 18 Vdc may damage the meter due to AC line input voltage fluctuation A055 WMX101 0 Do __________ N Not Use Aa 0 a ral White T 42 E S gt E O Power 1 Used Red E 0 5 Drain Wire aye TES Power Supply 8 32 AO55W Pulse to Analog Converter FT420 WMX101 White NYHLSSYd asind cz 985 5 o t 1 1 External Power Input Required 12 32 Vdc WMX101 Cable Shielded Green Direct Burial Cable 22 AWG Stranded lt v WMX101 Black Red FT420W Remote Rate Total Display od 30 mA max see WARNING
7. WMX SERIES Seatietrics MUNICIPAL INDUSTRIAL MAGMETER INSTRUCTIONS o m 2 m o 9 U gt LE z o 2 gt gt 7 m m 2 90 A Oo o Z o WMX104 WMX101 168 WMX104 300 9001 2008 TABLE OF CONTENTS General Information General Information 7 7 2 1 Specifications Specifications Flow 3 Installation and Grounding Positioning the Meter Straight Pipe Recommendations Full Pipe Recommendations Fittings Calibration Chemical Injection Metal Pipe Installations Plastic Pipe Installations Page 4 Straight Pipe een mre nnns Page 5 Full Pipe Recommendations iere icto acoso c eue EEEE ek anke n a ace 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 WMXJ101 Page 8 Troubleshooting Problem Probable Cause Things to Try ertet EI esee saeva aed Page 9 TABLES DIAGRAMS amp CHARTS eut teilte tatum eei eld e LEID Ie Page 1 0 01100 gem 3 Flow c r T Page 3 Metal Pipe Installation Plastic Pipe Installation Page 4 Strai
8. ght Pipe cnt ist rose iacet addet Ede duke edet o addu de dx EL ddl e ide Page 5 Full Pipe Recommendations uates iene E egi Page 6 High Frequency centre be a e X Y d Eta noeud tado Ep vv RAM Page 7 Display Readings edere rece ded aces rd ec ec EXER YER C Page 7 Connections Diagrams Page 8 TROUDIGSMOOTNG 9 GENERAL INFORMATION The WMX Series are flanged electromagnetic flowmeters 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 WMX Series meters to be used in piping configurations where there is little soace 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 fluid 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 mete
9. illustration Replacement instructions come with the custom battery pack available from your dealer or Seametrics Pulse Output WMX104 Pulse output capabilities are built in to the WMX104 but cannot be utilized without the addition of an optional output cable AWMX104 can be retrofitted with this cable in the field IMPORTANT When field 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 flow rate and the top line for accumulated total Measurement units are pre ordered and factory set and can be changed in the field only by an authorized individual Refer to the diagrams below to read your display 1 C t n tc n A ul T M a oon 20 External Power Indicator No Power WMX101 Only Battery Power WMX104 Standard Operation WMX101 Backup Operation Empty Pipe Rate 4 Low Battery Indicator Meter Installed Backwards 3 days remaining Page 7 CONNECTIONS DIAGRAMS WMX101 The WMX101 requires a power source of 8 to 32 at mA max see WARNING
10. ions install chemical injection point downstream of magmeter or far enough upstream to allow complete mixing of fluids before the meter Page 4 EQUALIZATION AND GROUNDING Metal Pipe Installations To equalize the electrical potential ofthe fluid the WMX meter and the surrounding pipe secure the flange plates factory installed on the equalization lug to both pipe flanges at one of the bolt holes as shown below Be sure the lockwasher fits between the pipe flange and the flange plate Meter Flange Pipe Flange Lockwasher Flange Plate Equalization Lug Metal Pipe Equalization Diagram Run wire from equalization lug to both pipe flanges secure flange 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 equaliza tion 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 Clamp Copper Ground Wire Earth 8 Ground Rod STRAIGHT
11. re 150 psi 10 3 bar working pressure Temperature Operating 10 to 130 F 12 to 54 C Non Operating 40 to 158 F 40 to 70 Accuracy 1 of reading for flow between 10 to 100 of max flow 2 of reading for flow from cutoff to 10 of max flow Materials Body 3 Only Ductile cast iron powder coated w NSF61 listed epoxy powder Body 4 10 Welded steel epoxy coated Liner 3 Only Noryl Liner 4 10 Dual durometer rubber Electronics Housing Diecast aluminum powder coated non IP68 Ductile Cast Iron IP68 Electrodes 316 stainless steel O ring 3 Only EPDM Display Rate Total Digits 5 8 Units 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 Power WMX101 8 32 Vdc at 30 mA max with auxiliary battery for continuous operation during power failures NOTE Using an unregulated power supply gt 18 Vdc may damage the meter due to AC line input voltage fluctuation WMX104 2 Lithium 3 6V D batteries replaceable 1 year life under continuous use Pulse Output Signal WMX10141 Current sinking pulse opto isolated 30 at 10 mA max WMX104 Pulse output available only with addition of post factory output cable Pulse Rates High Frequency default 10 units pulse 100 units pulse 1000 units pulse High Frequency 3 4 6 8 10 Pul
12. rs for prolonged periods of time FEATURES Rate and total indicator Powder coated diecast aluminum electronics housing Tamper evident security seal amp 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 flow tube 316SS electrodes Dual durometer rubber liner Flanges ANSI 150 Ib drilling Page 1 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 Specifications Two Lithium 3 6V AA batteries provide auxiliary power during power failures allowing the meter to continue recording flow 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 bat
13. se Gal 25 228 16 362 6 307 3 344 2 150 Pulse Liter 6 665 4 323 1 666 0 883 0 568 Conductivity 220 microSiemens cm Empty Pipe Detection Hardware software conductivity based NEMA 4X Standard IP68 NEMA 6P Option Environmental Specifications subject to change Please consult our website for the most current data www seametrics com FLOW RANGE 3 10 Gal Min Liter Sec Gal Min Liter Sec Gal Min Liter Sec Gal Min Liter Sec Gal Min Liter Sec Minimum 3 2 6 ss 6 Page 3 INSTALLATION and GROUNDING INSTALLATION Caution These flow sensors are not recommended where installation fault may expose the flow sensor to boiler pressure and temperature Maximum recommended temperature is 130 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
14. teries 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 Equalization lug 3 WMX104 GENERAL INFORMATION FEATURES Continued Rate and total indicator Tamper evident security seal amp 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 amp electronics housing 3 Glass filled molded plastic liner 31655 electrodes Flanges ANSI 150 Ib drilling Equalization lug WMX104 300 IP68 housing standard for 3 models Rate and total indicator es Tamper evident security seal amp 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 IP68 Housing Option For 4 10 meter standard for 3 models Page 2 Equalization lug SPECIFICATIONS SPECIFICATIONS Pipe Sizes 3 4 6 8 10 Fittings ANSI 150 Ib drilling Pressu
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