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WFM Water meter0 pages
Water Meter Contactors
WFM Series
WFM Series water meters have earned a reputation for design simplicity,
wide range of applications and accuracy in low-quality water. The impeller is
centered in a ring of jets, with inlet jets on one level and outlet jets on another.
A gear train drives the register totalizer dials.
For pulse output, one of the pointers is replaced by a magnet, which is detected by an encapsulated sensor attached to the outside of the lens. Pulse
rate is determined by the dial on which the magnet is placed and by the number
of sensors (single or double). Changing the pulse rate requires no special tools
and can be done in the field.
The WFM Series uses the widely recognized multi-jet principle, which has been accepted as an international
standard for many years. These meters are available with either a two-wire reed switch, or a solid state, threewire Hall effect sensor.
The Hall effect sensor provides long lasting service and requires power. The reed switch provides a dry contact closure
and does not require power. The WFM meters are typically used in cold water applications with cooling tower or boiler
conductivity controllers and metering pumps for chemical feed. They do not have NSF Standard 61 certification for
drinking water
applications.
C
Summary of Key Benefits
D
Simple and dependable multi-jet design.
Available in 3/4”, 1”, 1½” and 2” NPT sizes
for flow rates from 0.22 to 132 GPM.
A
A wide range of pulse rates for a variety of
applications.
B
DIMENSIONS
Reed switch or Hall effect sensor options.
¾”
A (Body)
2”
7½”
10¼”
11¾”
15 5/8”
17 5/8”
C (BSP thread)
1”
1¼”
2”
D (NPT thread)
* Not approved for drinking water.
¾”
1”
1½”
2”
7
9
14
18
Shipping Weight (lbs)
PULSE RATES AVAILABLE
1”
1½”
2”
Pulses/Gal
Gallon/Pulse
Pulses/Gal
Gallon/Pulse
Pulses/Gal
Gallon/Pulse
Pulses/Gal
Gallon/Pulse
*20
1
*2
1
*2
1
*2
1
10
*5
*2
1½”
12 5/8”
B (Body with couplings)
3/4”
1”
*5
*5
*5
10
10
10
10
*50
*50
*50
*50
100
100
100
100
2½”
"
