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Hot-Tap Metal Insertion Electromagnetic Flow Meter

Insertion Metal Magmeter


Item# FMG-553

In stock

Lead Time (If not in stock): 6 weeks
Insertion Metal Magmeter FMG-553 FMG-553
  • Hot-Tap Version for Installation and Service Without System Shutdown
  • Diagnostic Features Using Colored LED Lights
  • Optional Detachable Waterproof Cable
  • Output Choices of Frequency or 4 to 20 Ma

FMG-553 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Output Signal
Supply Power
Velocity Range
Max Operating Pressure
Max Process Temperature
Wetted Materials
Media Type
Compatible Fittings
Pipe Size Range

  • Connection Size NEMA 6P (IP68)
  • Accuracy Value
  • Cable Length 300 m (1000')
  • Current Draw 4 to 20 mA (24 Vdc nominal
  • Maximum Ambient Temperature 70 {C} (158 {F})
  • Maximum Conductivity 50 mA
  • Maximum Liquid Temperature 85 {C} (185 {F})
  • Maximum Operating Pressure 20.7 bar @ 25°C (300 psi @ 77°F)
  • Maximum Signal Current 50 mA
  • Minimum Liquid Temperature -15 {C} (5{F})
  • Minimum Ambient Temperature -15 {C} (5 {F})
The FMG-550 Series magmeter flow sensors are heavy-duty, high-performance sensors in an adjustable, insertion configuration that can be used with a ball valve for hot-tap installations. This insertion-style flow sensor has no moving parts and is constructed of corrosion-resistant materials to provide long-term reliability with minimal maintenance costs.

The FMG-550 Series is versatile and simple-to-install, delivering reliable flow measurement over a wide dynamic range. Pipe sizes range from 2 to 48". Omega’s FMG-550 magmeters offer frequency or current outputs. The blind transmitter (4 to 20 mA output) is available for long distance signal transmission. The empty pipe detection features a zero flow output when the electrodes are not completely wetted. The frequency output is bi-directional while the 4 to 20 mA output can be set for uni- or bi-directional flow. The 4 to 20 mA output is factory spanned. Other factory configurations available, see "Notes" below for ordering instructions.

Wetted Materials: 316 L stainless steel body and electrodes, PVDF insulator, O-rings (FPM standard), 4-conductor shielded cable, PVC jacket (fixed cable models) or watertight rubber cable with connector on “-SUB” models
Power: 4 to 20 mA (24 Vdc nominal, 21.6 to 26.4 Vdc max, 22.1 mA maximum), frequency (5 to 24 Vdc nominal, 5 to 26.4 Vdc max, 15 mA max), reverse polarity and short circuit protected pipe size of DN50 to DN1200 (2 to 48")
Flow Range: 0.05 m/s (0.15 ft/s) min, 10 m/s (33 ft/s) max
Linearity: ±1% reading + 0.01 m/s (±1% reading + 0.033 ft/s)
Repeatability: ±0.5% of rdg @ 25°C
Minimum Conductivity: 20 µS/cm
Accuracy: <±2% of measured value in reference conditions where the fluid is water at ambient temperature, the appropriate upstream and downstream distances are observed, the sensor is inserted at the correct depth, and there is a fully developed flow profile which is in compliance to ISO 7145-1982 (BS 1042 section 2.2).
Electrical Current Output: 4 to 20 mA, programmable and reversible, loop
Accuracy: 32 µA max error (at 25°C @ 24 Vdc)
Temperature Drift: ±1 µA per °C max
Power Supply Rejection: ±1 µA per V
Isolation: Low voltage <48 Vac/dc from electrodes and auxiliary power
Maximum Cable: 300 m (1000')
Maximum Loop Resistance: 300 ?
Error Condition: 22.1 mA frequency output
Maximum Pull-up Voltage: 30 Vdc
Short-Circuit Protected: <30 V @ 0 ? pull-up for 1 hour, reverse polarity protected to -40 V for 1 hour, over-voltage protected to 40 V for 1 hour
Maximum Current Sink: 50 mA, current limited Temperature/Pressure Ratings
Storage Temperature: -15 to 70°C (5 to 158°F) in non-icing conditions Operating Temperature Ambient: -15 to 70°C (5 to 158°F) in non-icing conditions
Media: -15 to 85°C (5 to 185°F)
Maximum Operating Pressure: 20.7 bar @ 25°C (300 psi @ 77°F)
Hot-Tap Installation Requirements:
    Maximum Installation Pressure:
20.7 bar (300 psi)
    Maximum Installation Temperature: 40°C (104°F) Hot-tap installation at temperatures that are greater than 40°C (104°F) or with hazardous liquids are not permitted with this product.
    Connector: NEMA 6P (IP68)
    EN 61326: Immunity and emissions for control equipment
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Can fmg-554 be provided with local display aside the transmitter. At how much?

Asked by: Lekan
Thank you for your inquiry about the insertion magnetic flow meter. A remote display such as the DPF64 will display flow rate, the DPF65 will display total volume, and the DPF66 will display both flow rate and total volume and will accept the signal from the FMG-554.
Answered by: Application Engineer JC
Date published: 2022-04-08

What's the frequency range of the FMG553 FLOWMETER, please?

Asked by: Lekan
Thank you for your inquiry. The frequency output is equal to the voltage supplied input and the K-factor is listed in the manual for the pipe dimaeter and construction of material to install the mag meter. Also, it can be determine via an equation provided below: f = (K x Q)/60 where f is the frequency in Hz K is the K-factor in pulses per gallon Q is the flow rate in gallns per minute
Answered by: Application Engineer JC
Date published: 2023-09-19
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4 conductor, 22 AWG, water tight connector, 6 m (19.5')
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