iMag Magnetic Flow Meter

iMag Magnetic Flow Meter

iMag Magnetic Flow Meter is the most economical flanged electromagnetic flowmeter on the market. It is used in 3” to 12” pipe in municipal or industrial water, wastewater, pump stations, and packaged plant applications. The iMAG flow meters have no moving parts and electrodes are designed to discourage fouling.

This magnetic flow meter requires no maintenance in applications where debris would impede mechanical meters. There are no parts to wear out. Minimal straight pipe requirements allow iMAG-Series meters to be used in piping configurations where there is little space between the meter and an elbow.

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General Information

iMAG-Series electromagnetic flowmeters are rated IP68 for applications where the meter may be underwater up to a depth of 10 feet (3 meters) for prolonged periods of time. Rate and total indication are standard. Rate and total units and pulse output are settable via the front panel touch keypad by the user. The image can be externally powered with 9-36 Vdc at 30 mA.

The standard 20-foot (6 meters) cable also provides outputs for use with a variety of Seametrics and other displays and controls for remote reading, data logging, and telemetry applications. 4-20mA passive current loop and high-frequency outputs are optional. The image 3600 remote display flowmeter can be supplied with an optional internal AC power supply.

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Positioning the meter. 

These flow meter 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 iMAG electromagnetic flow meter requires straight pipe before and after the meter for the best accuracy. However, the ability of electromagnetic meters to average the flow across the entire pipe allows for shorter straight pipe recommendations than most mechanical meters 

Full Pipe Recommendations. All magmeters require a method for determining that the pipe is empty, to prevent false reading. This meter is designed to indicate ‘EMPTY PIPE’ if one or more electrodes are exposed. For the 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.

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iMag Magnetic Flow Meter Features

  • Easy setup
  • Minimal straight pipe
  • Mounted or remote rate & total
  • Tamper-evident seal
  • NSF-61 approved
  • IP68 rated

The Right Meter For

  • Water & Waste Water Treatment
  • Municipal
  • Treatment plants
  • Pump stations
  • Packaged plants
  • Filtration systems

iMag Magnetic Flow Meter Specifications

Pipe Size
3”,4”, 6”, 8”, 10”,12”
150 lb. ANSI pattern
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 +/- 0.25% of the full-scale flow from low flow cutoff to a maximum flow rate of 10 m/sec
Low Flow Cutoff
0.5% of the maximum flow rate
 Body (3” Only)
Ductile cast iron, powder-coated w/NSF61 listed epoxy powder
      Body (4”-12”
Welded steel, epoxy-coated
      Liner (3” Only 
       Liner (4”-12”)
      Electronics Housing
Ductile cast iron, powder-coated
316 stainless steel
      O-ring (3” Only)
128×64 dot-matrix LCD
5 Digit Rate
Rate Volume Units
Rate Time Units
Total Volume Units
Cubic Feet
Cubic Meters
Million Gallons
Mega Liters
Imperial Gallons
Million Imperial Gallons
Gallons x 1000
Million Gallons
Liters x 1000
Mega Liters
Cubic Meters
Cubic Meters x 1000
Cubic Feet
Cubic Feet x 1000
Imperial Gallons
Imperial Gallons x 1000
Million Imperial Gallons
DC Power
9-36 Vdc @ 250 mA max, 30 mA average
AC Power
85-264Vac, 50/60Hz, 0.12A
Telemetry Output
3.3V asynchronous receive and transmit (UART) signals, ASCII command-response protocol
Pulse Frequency Output
Current sinking pulse, isolated, 36 Vdc at 10 mA max
Pulse Rates
User-settable volume units/pulse. Pulse width is one-half of pulse period, 200 pulses/sec max
4-20mA Current Loop
Isolated, passive, 6-36Vdc, +/- 0.1% of pulse/frequency output HART compliant2
Digital Output
Isolated, open collector, 36Vdc @ 10mA max., frequency output up to 10kHz
Relay Output
Solid-state relay, normally open, non-polarized, 28Vac/40Vdc @ 0.5A max, 33Hz max
Serial Communications2
Isolated, asynchronous serial RS485 or RS232, Modbus RTU protocol
Control Cable
Six-conductor water-blocked cable, polyurethane jacket, 20ft (6m) standard length for power, pulse
frequency or optional outputs. Optional lengths up to 100’ available
Remote Display Cable (iMAG 3600)
33ft (10m) standard length may be shortened (by a user in the field). The additional cable can be ordered and attached with the use of a junction box (purchased from a standard supplier) up to 100ft (30m) total
>20 micro Siemens/cm
Empty Pipe Detection
Hardware/software, conductivity-based
(EN 61326) pending, NSF-61
IP68 to 10ft (3m) depth