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.
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.
SPECIFICATIONS 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
† All amounts shown in EUR Note: Comes complete with operator’s manual, alignment rod, hex wrench, clamp rings and ruler.
Cable sold separately.
** Custom scaling is available, add suffix "-SCALED-******-I.D.*****" to part number; add $165 to price and two weeks to the standard lead time. Please replace the asterisks with the range and the pipe I.D. Consult Flow Engineering if you have any questions on ordering.
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