4 • ‘M’ SERIES WATER METERS ‘M’ SERIES WATER METERS • 5
READING A REGISTER
READING A REGISTER - STANDARD REED SWITCH AND PHOTO DIODE
The Total Flow for a Water Meter register is calculated by adding the readings from the Totalizer
and the three fractional dials. The three fractional dials measure quantities smaller than the
totalizer reading and are continuously turning while calculating the flow.
TOTALIZER READING: Rotates sequentially for
each 100 U.S.G. (U.S. Gallons) calculated
Number displayed is multiplied by 100 to reach
total U.S.G.
FRACTIONAL DIAL # 1: Each number (1-9) on
the dial is multiplied by 10 to reach U.S.G.
One complete revolution of this dial = 10 U.S.G.
FRACTIONAL DIAL # 2: Each number (1-9) on
the dial is multiplied by 1 to reach U.S.G.
One complete revolution of this dial = 1 U.S.G.
FRACTIONAL DIAL # 3: Each number (1-9) on
the dial is multiplied by 0.1 to reach U.S.G.
One complete revolution of this dial = 0.1 U.S.G.
Fractional
Dial #2
Fractional
Dial #3
Fractional
Dial #1
Totalizer
Reading
REGISTERS
ER (ELECTRONIC) REGISTER
Combines standard digital register features with dry pulse
output capabilities. Clearly displays the rate of flow and
volume readings in Gallons or Acre Feet. Mounted inside an
IP68 stainless steel glass encapsulated cap. Multi-line digital
LCD readout displays 9 digits for Total Volume in U.S. Gallons
(U.S.G.) or Acre Feet and 4 digits for Rate of Flow in Gallons per
Minute (GPM). It’s programmable to a wide variety of pipe sizes.
Register is interchangeable with common tools.
Minimum voltage is 3.6 VDC. Minimum contact current is
200mA to a maximum of contact voltage of 40VDC.
Maximum distance between meter and control
board is 65’.
Yellow Wire = Positive (20-30mA through a resistor)
Transparent Wire = Output (open collector, max. load 2mA)
Bare Wire = Ground
NOTE: Always refer to the controller
manufacturer’s instructions for proper
installation and connection requirements.
ER Register with
Pulse Output
Connection
READING A REGISTER
READING A REGISTER - ER (ELECTRONIC)
Multi-line LCD digital readout displays 9 digits for Total Volume in U.S. Gallons (U.S.G.) or Acre
Feet and 4 digits for Rate of Flow in Gallons per Minute (GPM). It’s programmable to display a
variety of volume and flow units for multiple pipe sizes.
CALCULATING RATE OF FLOW: The bottom row of numbers, four (4) in total, display the
current flow rate. Directly to the right of this number is the unit of measurement for the
displayed flow rate.
Bottom Line:
Flow Rate
Unit of
Measurement
NOTE: If the flow rate is negative (-), the register is reading reverse flow.
CALCULATING TOTAL VOLUME: The top row of numbers, nine (9) in total, display the total
volume of water that has passed through the meter. Directly to the right of this number is the
unit of measurement for the displayed total volume.
Top Line:
Total Volume
Unit of
Measurement
NOTE: If the icon to the left of the totalizer number is positive
(+), the register is reading the total amount of water in a forward
flow direction. If the icon is negative (-), the register is reading
the total amount of water in a reverse flow direction.
