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FPI-X Insertion Mag Meter

A New Standard in Severe Swirl Flow Measurement

Mc Mag3000 Main Image

Based on the revolutionary FPI Mag®, the FPI-X dual sensor electromagnetic flow meter is designed to deliver a highly accurate measurement in extreme flow conditions unachievable by other flow measurement technologies. The McCrometer FPI-X provides ± 0.5% accuracy in flow with severe swirl, such as cascading or multiple pump arrays.

Dual Sensors = Accurate Flow Measurement
in Severe Flow Profiles

The FPI-X is a dual sensor meter that uses multiple electromagnetic coils installed throughout both sensors to produce a magnetic field across the complete cross sectional area of the pipe. Placing voltage sensors in two planes across the pipe accounts for differences in velocity caused by excessive swirl and other flow disturbances.

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McCrometer is advancing flow measurement again. Based on the revolutionary FPI Mag®, the FPI-X is designed to deliver a highly accurate measurement in severe swirling flows previously unachievable with other flow technologies.

Key Applications:

  • Multiple Pump Discharge
  • Severe Swirl
  • Single Pump Discharge
  • Total Station Discharge



Simple Installation

Just like McCrometer's FPI Mag, the FPI-X is designed to be one of the easiest flow meters to install. Hot tapping the installation allows for the insertion of the meter without interrupting service, de-watering lines, cutting pipe or welding flanges. The FPI-X eliminates the need for heavy equipment and manpower necessary to support installation.

Lower Costs

Operators of pumping stations will see an immediate cost savings, allowing them to measure the total station discharge instead of measuring at each pump or not measuring at all.

Robust Construction

With no moving parts, the FPI-X requires little to no maintenance for years of worry-free operation. The sensor bodies are made from heavy-duty 316 stainless steel for maximum structural integrity. The patented sensor bodies are hermetically sealed and protected by NSF certified fusion-bonded epoxy coating.


The FPI-X is ideal for capital or maintenance projects, retrofits and sites never before metered. The unique combination of accuracy, ease of installation and total cost savings make the FPI-X the perfect choice for the Municipal Market's toughest applications.


The FPI-X (Full Profile Insertion X Pattern) flow meter provides accurate flow measurement for full-pipe clean water applications. The electromagnetic sensors automatically sense and correct for shifting velocity in the pipe by constantly obtaining an area weighted mean velocity. The FPI-X can use either the Model 394L forward and reverse flow measurement sensors, or the 395L forward only flow measurement sensors. The instrument has all of the features needed to suit a wide variety of applications.

The flow meter is comprised of the innovative FPI Mag® sensors and a converter. For converter installation instructions, see the manual provided for the converter purchased with your system.

The sensors are easily installed without service interruption, and require no site calibration. Installation without service interruption can be done only when adhering to safe hot-tapping procedures,

Method: Electromagnetic

The following specifications will help determine if the FPI-X Mag is suited for your specific flow measurement application.

Range: 0.3 ft/s to 32 ft/s (0.1 m/s to 10 m/s) 
Accuracy: ± 0.5% from 1 ft/s to 32 ft/s (0.3 m/s to 10 m/s)
± 1% from 0.3 ft/s to 1 ft/s (0.1 m/s to 0.3 m/s)
Linearity: 0.3% of reading 
Pipe Sizes: 12" - 138" (300 mm to 3,500 mm) 
Materials: 316 Stainless Steel Sensor Body, Insertion Hardware and Sensor Electrodes NSF Certified 3M Fusion-Bonded Epoxy Coating



CSA, UL, ISO Certifications and Approvals:
McCrometer CSA Certification   Listed by CSA to 61010-1: Certified by CSA to UL 61010-1 and CSA C22.2  No. 61010-1-04
McCromter Ultra Mag ISO Certification   ISO 9001:2008 certified quality management system
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