Omega Products FMG903 User Manual

InsertIon MagnetIc FlowMeter

FMG900 Series

U Durable U Adjustable Depth U Hot-Tap Available U Brass or Stainless Steel U Immersibility Available U Reverse Flow

Output Available

U 3 to 48" Diameter Pipes

FMG907 for 76 to 254 mm (3 to 10") pipe with hot tap insertion, shown smaller than actual size.

The complete lack of moving parts of this insertion ﬂow sensor is the source of its reliability. There is no rotor to stop turning in dirty water and there are no bearings to wear out. Brass and stainless steel models withstand a variety of temperature, pressure, and chemical conditions. Reverse ﬂow output and immersibility are optional. A rapidly reversing magnetic ﬁeld is produced in the lower housing. As the ﬂuid moves through this ﬁeld, a voltage is generated that is measured and translated into a frequency signal proportional to ﬂow rate. This square wave signal can be sent directly to a PLC, control or converted to 4 to 20 mA with the FTB700-T shown below (optional). A modular system of electronics can be attached directly to the ﬂow sensor or remotely mounted. The FMG900 series can provide full indication of rate and total with the (optional) FTB700-D or just a 4 to 20 mA output with the (optional) FTB700-T blind transmitter. The adaptor ﬁtting of the standard unit is a male NPT, and can be directly threaded into ordinary saddles or threaded weld ﬁttings. The hot tap versions include an isolation valve, allowing hot-tap installation, or installation and removal under pressure. Hot tap units include the appropriate installation valve.

FMG903 for 76 to 254 mm (3 to 10") pipe, shown smaller than actual size.

SPECIFICATIONS

Power: 12 to 24 Vdc, 250 mA Flow Range: 0.28 to 20 ft/second

(0.08 to 6.09 m/second)

Connection Size

Standard Units: 11⁄2 NPT male,

hot tap models, 2 NPT male Ambient Temperature: -17 to 72°C

(0 to 160°F) Fluid Temperature: 0 to 93°C

(32 to 200°F)

Maximum Pressure: 13.8 bar (200 psi) Minimum Conductivity:

20 microSiemens/cm Shaft and Fitting: 316 SS or brass

(depending on model) Electrodes: Hastelloy

Electrode Cap: PVDF Housing: Cast powder-coated

aluminum Valve: Bronze or SS

(depending on model)

O-Ring: EPDM Accuracy: ±1% of full scale Output: Square wave pulse, opto

isolated, 550 Hz @ 20 ft/second 6 mA maximum, 30 Vdc forward ﬂow standard (reverse ﬂow optional)

Empty Pipe: Defaults to zero ﬂow

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FMG900 Series enclosure

FMG901 to FMG904 Insertion Style Units

Dimensions: mm (inch)

Flow Range LPM (GPM)

Pipe Size Min Flow Max Flow

3 23 (6) 1666 (440) 4 42 (11) 2964 (783) 6 95 (25) 6670 (1762) 8 167 (44) 11,860 (3133) 10 261 (69) 18,530 (4895) 12 375 (99) 26,687 (7050) 14 507 (134) 36,325 (9596) 16 662 (175) 47,443 (12,533) 18 840 (222) 60,050 (15,863) 20 1037 (274) 74,134 (19,584) 24 1495 (395) 160,749 (28,200) 30 2336 (617) 166,800 (44,064) 36 3361 (888) 240,192 (63,452)

FMG905 to FMG908 Hot Tap Insertion Units

To Order Visit omega.com/fmg900_series for Pricing and Details

Model No. Description

FMG901 Brass insertion style magmeter, 76 to 254 mm (3 to 10") pipe FMG902 Brass insertion style magmeter, 254 to 1219 mm (10 to 48") pipe FMG903 SS insertion style magmeter, 76 to 254 mm (3 to 10") pipe FMG904 SS insertion style magmeter, 254 to 1219 mm (10 to 48") pipe FMG905 Brass insertion style magmeter, hot tap, 76 to 254 mm (3 to 10") pipe FMG906 Brass insertion style magmeter, hot tap, 254 to 1219 mm (10 to 48") pipe FMG907 SS insertion style magmeter, hot tap, 76 to 254 mm (3 to 10") pipe FMG908 SS insertion style magmeter, hot tap, 254 to 1219 mm (10 to 48") pipe

Accessories Model No. Description

FTB700-T Blind 4 to 20 mA transmitter FTB700-D Remote rate and total display with 4 to 20 mA output PSU-93 24 Vdc power supply, 200 mA TX4-100 4 conductor hook-up wire, 30 m (100')

Comes complete with operator’s manual. For reverse ﬂow option add a “-RF” to the model number for additional cost.

Ordering Examples: FMG901, brass insertion style magmeter, PSU-93, power supply and TX4-100, multi conductor wire. FMG903, 316SS insertion style magmeter, PSU-93, power supply and TX4-100, multi conductor wire.

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