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Marsh Multi-Mag™ flow meter

Ideal laboratory conditions are rarely found in any water system. Low flows, wide flow ranges, bends, elbows, and even the obstruction of the measuring device affect accuracy. The Marsh Multi-Mag Insertable Electromagnetic Averaging Flow Meter is truly a revolutionary instrument with unprecedented accuracy even in these most difficult flow conditions. It is ideal for measuring potable water, chilled water, raw water, water with sand and grit, and other debris-free water applications.

Until recently, expensive spool-piece mag meters, turbine meters, and other insertable flow meters that only provide a single point measurement were utilized. After years of extensive testing and thousands of installations worldwide, the patented Marsh Multi-Mag Flow Meter provides multiple measuring points precisely positioned according to your pipe’s size to making this the most accurate flow meter available. Typical applications include: custody transfer, filter balancing, filter backwash, water treatment processes, distribution management and head flows.

  • Ideal for difficult flow conditions, i.e., low flows, wide flow ranges, bend and elbow installations, and vertical pipes
  • Installs in minutes without system shut-down
  • Automatic sensing and correcting for shifting flow profiles
  • Streamlined sensor for minimal pressure drop
  • High turn-down ratio
  • Requires significantly less energy to operate than most flow meters
  • Economical cost - doesn’t increase with pipe size
  • Download Our Product Brochure
Specifications:
  • Zero Stability: ±0.03 ft/s (±.009 m/s)
  • Linearity: 0.3% of range
  • Repeatability: 0.20% of range
  • Accuracy: ±1% of reading from 0 to +20 ft/s + zero stability
  • Has reverse flow indication (Other models available with highly accurate reverse
       flow capabilities)
  • Range: (nominal pipe sizes)
Pressure / Temperature Measurement:
PVC Insertion Tube: 150 PSI up to 105°C (40°C)
Stainless Steel Insertion Tube: 250 PSI up to 140°F (60°C) (McCrometer recommends the use of Stainless Steel)
 
Product Applications:
Agricultural & Turf Irrigation Canal Laterals | Center Pivot Systems | Drip and Sprinkler Irrigation | Golf Course and Park Water Management
Food Boilers | Steam | Water
Power Feedwater
Process & Facility Control Air | Air + C02 + SF6 | Air / Gas | Argon | Carbon Dioxide | Caustic | Compound Blending Systems | Condensate | Cooling Water | Gases (Ammonia, Argon, Chlorine, CL2 + Air, Fuel, HCI + H2, Hydrogen, Naphtha, Natural, Nitrogen, Other Hydro Carbon, Propylene) | Liquid Butane | MTBE | Oil | Solvent | Steam | Tank-Car Loading | Water | Water Condensate
Pulp, Paper
and Wood
Black Liquor | Pulp Stock
Water & Wastewater Back Wash | Cooling Water | Filter and Pipe Galleries | Potable Water | Pump Stations | Pump Stations-Raw Water | Rate-of-flow Controller- Raw Water | Transmission Lines-Raw Water | Truck Loading and Discharge | Wastewater Effluent | Wastewater Management | Water Well Production
 
The following flow and installation parameters will help you decide whether the Marsh Multi-Mag is suited to your specific flow measurement application.
 
Sensor Size-Velocity Range for Pipe Sizes:
1" Sensor Velocity Range Pipe Sizes: 6" to 12" (150 mm to 300 mm)
0 to 40 ft/s 12" to 6"
2" Sensor Velocity Range Pipe Sizes: 4" to 60" (100 mm to 1500 mm)
0 to 40 ft/s 10" & under
0 to 35 ft/s 12" & under
0 to 30 ft/s 16" & under
0 to 25 ft/s 20" & under
0 to 20 ft/s 24" & under
0 to 15 ft/s 36" & under
0 to 10 ft/s 42" & under
0 to 7.5 ft/s 60" & under
3" Sensor Velocity Range Pipe Sizes: 42" to 120" (1050 mm to 3000 mm)
0 to 15 ft/s 60" & under
0 to 10 ft/s 100" & under
0 to 7.5 ft/s 120" & under
 
Flow Parameters:
Flow Range 0 to 20 ft/s
Sensor Operating Temperature 32° to 110°F (0° to 44°C) @ 250 psi - Standard
Operating Pressure 32° to 110°F (0° to 44°C) @ 250 psi - Standard
 
Installation Parameters:
Pipeline Sizes 4 to 120 inches (100 mm to 3000 mm)
Mounting 2-inch Corporation Stop or Valve
Environmental protection rating NEMA 4X/IP65
 
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