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Product Groups
Insertion Metal Magmeter
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
FMG-550 Series
  • 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
  • Bi-Directional Flow and Empty Pipe Detection
  • No Moving Sensor Parts
  • Adjustable Insertion for Large Pipe Sizes up to DN 1200 mm (48")
  • Flow Rate Range 0.05 to 10 m/s (0.15 to 33 ft/s)
  • Measurement in Dirty and High-Solid Content Liquids
 Manuals (contact with email : [email protected])


The FMG-550 Series magmeterflow sensors are heavy-duty,high-performance sensors in anadjustable, insertion configurationthat can be used with a ball valvefor hot-tap installations. Thisinsertion-style flow sensor has nomoving parts and is constructed ofcorrosion-resistant materials toprovide long-term reliability withminimal maintenance costs.

TheFMG-550 Series is versatile andsimple-to-install, delivering reliableflow measurement over a widedynamic range. Pipe sizes rangefrom 2 to 48". trodeks’s FMG-550magmeters offer frequency orcurrent outputs. The blindtransmitter (4 to 20 mA output) is available for long distance signaltransmission. The empty pipedetection features a zero flowoutput when the electrodes are notcompletely wetted. The frequencyoutput is bi-directional while the 4 to20 mA output can be set for uni- orbi-directional flow. The 4 to 20 mAoutput 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 Ω
Error Condition: 22.1 mA frequency output
Maximum Pull-up Voltage: 30 Vdc
Short-Circuit Protected: <30 V @ 0 Ω 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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