McCROMETER McMag 3000 Electromagnetic Flow Meter

McCrometer’s award-winning Mc Mag 3000™ provides growers and irrigators with a new alternative for flow measurement. With a 5-year meter warranty, a 5-year battery life, and saddle mount design, the Mc Mag 3000 delivers the dependability and ease-ofinstallation McCrometer has provided to the agricultural market for nearly 60 years. The electromagnetic sensor offers accuracy as good as ±1% while being designed to naturally shed debris.

The meter is available to fit a common range of agricultural line sizes, from 4” to 12” diameter pipe.

The innovative design of the Mc Mag 3000 saddle mount meter features a multi-point angled sensor that sheds debris, making it ideal for use in surface water, livestock waste lagoons, and other dirty water applications.

Using electromagnetic technology to measure the water flow, the Mc Mag 3000’s precision sensor corrects for shifting velocity in the pipe by constantly obtaining the mean velocity from its multiple electrodes. The result is a highly accurate (as low as +/- 1%) flow meter.

The meter combines an innovative saddle, precision sensor, and a battery powered integrated electronic converter package with data logging capability to provide accurate flow measurement for full-pipe flow monitoring applications.

The integrated electronic converter is secured with tamper resistant screws to protect against unauthorized access. The meter offers flow rate and total water used and a 5-year warranty. The Mc Mag 3000 features three 3.6V lithium-thionyl chloride (LiSOCI2) D size batteries, with one serving as back-up power. The main power batteries are easily replaced in the field. Pulse and 4-20mA output are available for remote meter reading or SCADA. The Mc Mag 3000 is McCrometer CONNECT wireless system compatible, which allows users to access flow data by simply logging on to the Internet. This eliminates costly manual meter reading.


Key Features

  • 5-year meter warranty
  • 5-year battery warranty
  • Battery powered for easy installation – eliminate the hassle of cables or AC power
  • Durable design – Proven in tough environments
  • 10 minute DIY replaceable battery pack, keeps your meter running
  • Made in the USA


  • Irrigation
  • Center Pivot Systems
  • Well Monitoring
  • Water Distribution
  • Chemigation
  • Livestock Waste Lagoons
  • Surface Water
  • Golf Courses and Park Management

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Description and Operating Specifications

  • Pipe Sizes : 4", 6", 8", 10", 12"
  • Body Style : Saddle mount
  • Pressure : 150 psi (10.3 bar) working pressure
  • Accuracy :
    ± 2% with default calibration
    ± 1% with custom Factory calibration
  • Conductivity : Minimum conductivity of 50┬ÁS/cm, for lower conductive fluid consult Factory.
  • Empty Pipe Detection : Hardware/Software, conductivity-based (optional)
  • Electrical connects :
    Optional shielded cable for 10-32VDC/4-20 mA output
    Optional shielded cable for pulse out
  • Pipe Run Requirements : 3D Upstream / 1D Downstream

Display and Measurement

  • Display
    - 2-Line LCD display (no backlight), 16 characters per line
    - Non-volatile memory
    - Anti-reverse totalizer (standard)
    - Total (to 9 digits of precision)
    - Flow Rate and Velocity (to 5 digits of precision)
    - Two alarms: low battery and empty pipe (optional)
    To preserve battery life, a push-button on the housing activates the display.
  • Digits : 5 Rate, 9 Total
  • Units : US gallons, US gallons x1000, US gallons x1,000,000, cubic inches, cubic feet, cubic feet
    x1000, cubic centimeters, cubic decimeters, milliliters, liters, deciliters, hectoliters, kiloliters,
    megaliters, cubic meters, cubic meters x1000, acre feet, acre inches, imperial gallons,
    imperial gallons x1000, imperial gallons x1,000,000, standard barrels, oil barrels, and miner
    inch days.
    Rate scales : seconds, minutes, hours, and days.


  • Battery : Standard : three 3.6V lithium-thionyl chloride (Li-SOCI2) D size batteries. Batteries are field
  • DC Power : Linear power supply 10-35VDC, 2.4W
    Battery Life : Five-year expected battery life (three-year battery warranty)


  • Operating Temperature : -4° to 140°F (-20° to 60°C) sensor
  • Storage Temperature : -40° to 149°F (-40° to 65°C)
    Note: During freezing conditions and when meter is not in use, sensor must be removed from pipe and stored in dry conditions. NOTE: Damage to the sensor caused by allowing the sensor freeze in the pipe is not covered by the warranty.
  • Operating Pressure : 150 PSI
  • Water Impermeability : IP68 (submersible sensor)


  • Pulse Output : Digital pulse (open collector) output for volumetric and/or alarm
    - Battery power only : 1 pulse output maximum
    - DC powered version : 2 pulse outputs available
  • Analog Output : 4-20mA (not galvanically separated from the power supply). DC powered option only

Options and Accessories

  • Data Logger - included as standard with five years of data storage at default (12hr) interval. (Cable sold separately)
  • Epoxy coated carbon steel flanged spool piece
  • DC power w/battery backup: (Pulse & 4 20mA Out)
  • Annual verification / calibration
  • Stainless Steel ID tag


  • Sensor Body : Fusion bonded epoxy coated stainless steel (316)
  • Electrodes : Stainless steel (316)
  • Saddle Mount : Stainless steel (304)
  • Saddle Hardware : Stainless steel (304)
  • Electronic Housing : IP-67 Certified diecast aluminum, powder coated enclosure w/ tamper resistant seal, 6½” x 6½” x 43/8” tall
  • O-Ring : SBR rubber D-ring
  • Boot Cover : EPDM rubber

Download Datasheet : McCROMETER McMag 3000 Electromagnetic Flow Meter

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