Dwyer FLMG - Manual (Page 4)

Page 1
GENERAL INFORMATION
FEATURES
The Series FLMG is a flanged electromagnetic flowmetersfor
use in 4” to 10” pipe in municipal or industrial water and
wastewater applications where propeller meters have typically
been used in the past. Because the FLMG has no moving
parts and has electrodes designed to discourage fouling, this
magmeter performs well and requires much less frequent
maintenance in applications where debris or sand would
impede propeller meters. There is no rotor to stop turning
or bearings to wear out. Minimal straight pipe requirements
allow FLMG Series meters to be used in piping configurations
where there is little space between the meter and an elbow.
In chemical injection applications, the meter should be placed
upstream of the injection line or far enough downstream for
thorough mixing to occur before the meter.
Rate and total indication are standard on both models. Flow
measurement units are customer-selected and factory-set
and can only be changed in the field by an authorized agent.
The Series FLMG is externally powered with 7-26 VDC at 30
mA max (see WARNING on Wiring Diagrams). Two Lithium
3.6V “AA” batteries provide backup during power failures,
allowing the meter to seamlessly continue recording flow rate
and total for the duration of the outage. Under intermittent
use, the battery life is approximately 10 years.
The 20-foot power cable also provides pulse output for use
with a variety of Dwyer Instruments Inc. and other displays
and controls for remote reading, data logging, pulse-to-
analog conversion, and telemetry applications. An internal
data logger is also available for secure flow logging. Pulse
rate is customer-selected and factory-set and can only be
changed in the field by an authorized agent. Default is high
frequency for use with 4 to20 mA signal conversion devices.
Welded steel epoxy-coated flow tube
Flanges, ANSI 150 lb drilling
Dual durometer rubber liner
Power/Output cable
Equalization lug
Powder-coated diecast-aluminum electronics housing
Rate and total indicator
316 SS electrodes
4” 6” 8” 10”
Gal/Min Liter/Sec Gal/Min Liter/Sec Gal/Min Liter/Sec Gal/Min Liter/Sec
12 .75 32 2 60 3.8 95 6
500 31.5 1,200 75.7 2,200 138.8 3,500 220.8
Internal Data Logger (Optional)