Xylem FC220 User Manual

Global Water

800-876-1172 • globalw.com

02-056
Publication Number 38580512

Global Water

Instrumentation, Inc.

151 Graham Road

P.O. Box 9010

College Station, TX 77842-9010

T: 800-876-1172

Int’l: [phone], F: [phone]

E-mail : [e-mail]

FC220 Flow Monitor

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Global Water

800-876-1172 • globalw.com

Congratulations on your purchase of the Global Water FC220 Flow
Monitor. This instrument has been quality tested and approved for
providing accurate and reliable measurements. We are confident that you
will find the monitor to be a valuable asset for your applicati on. Should you
require assistance, our technical staff will be happy to help.

Table of Contents

I. FC220 Flow Monitor Description • • • Page 3
II. FC220 Specifications • • • • 5
III. Flow Calculation Modes • • • • • 6
IV. Switch Settings • • • • • 8
V. Sensor Input • • • • • 9
VI. 4-20mA Output • • • • • 9
VII. Relay Operation • • • • • • 9
VIII. Power Saving Mode • • • • • 10
IX. Scientific Notation • • • • • 10
X. Totalizer • • • • • • 10
XI. Programming Setup Parameters • • • • 11
XII. Data Logger Option • • • • • 17
XIII. Maintenance and Troubleshooting • • • 18
XIV. Appendix A: Terminal Strip Diagram • • • 21
XV. Appendix B: Flume and Weir Equation Parameters • 22

* Copyright  Global Water Instrumentatio n, Inc. 2012

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Global Water

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I. FC220 Flow Monitor Description

The Global Water FC220 F low Monitor is a reliable and accurate instrument for
measuring and totalizing water flow in a wide variety of applications. Wate r level is
measured using Global W ater’s popular WL400 level sensor, WL700 ultrasonic
sensor, or almost any other 4-20mA, 0-5V or 0-1V water level sens or. Flow is then
calculated by the microprocessor using a variety of different techniques. The backlit
LCD display shows real-time flow, water level or total flow in user selectable units;
and the 8-button keypad easily guides the user thr ough the versa tile setup menus.

The FC220 supports several different types of flow calc ulation modes. Over 40
preprogrammed flume and weir equations are included. For monitoring in round pipes
and open rectangular channels; the Manning’s Equation mode allows the user to enter
their own parameters for material type, slope and pipe or chann el dimensions.
Standard flow equations c an also be defined; which c an calculate flow for almost all
flumes and w eirs. Another mode lets the user enter parameters for a b est fit 3
polynomial that is usefu l for calculating flow based on empirical data and lookup
tables. In addition, a factory programmable lookup table can be permanently stored in
the processor s m em ory for monitoring i n applications where a single equation can’t
accurately predict flo w, such as strea mbeds and open channels with complicated
geometry . A 16-character name can be programmed in to the FC220 by the user to
identify the ins tal la ti on si te or show other information about the configuration.

Water flow i s displayed w ith up to 7 digits which allows for the display of flow i n the
largest app lications. The totalizer records flow volume up to 9 digits with floating
point and sc ientific (engineering) notation supported in non-volatile memory, and is
password protected from reset. The maximum recordable total vol ume is more tha n
one trillion cubic feet. Available volume units are cubic feet, gallons, milli on gallons,
cubic meter s and liters; time units incl ude seconds, minutes, hou rs and days. T his
allows for the display of flow in 20 different user de fined units. Water level is
calibrated and displayed in feet, inc hes, meters or centimeters; and a level of fset
function allows the mea sured level to be adjusted to compensate f or variation s in
sensor installation. The engineering u nits for all display modes and setup parameters
are independently programmable, which allows f or the greate st possible versatility.

rd

order

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Global Water

800-876-1172 • globalw.com

Four indepe ndent relay outputs are provided for triggering external devices like water
samplers and monitoring devices. These relays can be separately programmed to
trigger bas ed on volume per pulse, and threshold se ttings can be used to limit
triggering to flows above preset levels. There is also an acc urate and scalable 4-20mA
output provided for monitoring flow using data loggers and PL C devices. An internal
USB data logger is available as a factory option tha t allows the historical flow data to
be recorde d, as well as the exact time of each relay trigger event. Free software is
provided for programming the data lo gger, downloading flow and relay data, and
exporting to spreadsheets. Programmable power sa ving features allow the supply
current to be reduced, which is import ant in remote monitoring ap plic a ti ons.

A 16 characte r by 2 line LCD display can s how either the current flow ra te, the water
level, or the volume in the totalizer. The 8-button keypad allows the selection of the
display modes, and the pr ogramming of the setup para meters. The DISPLAY button
toggles the LCD display between the flow rate, the water level, and the totalizer. This
button also allows the quick exit from the setup menus when in any setup mode.
Holding the MENU button down for two seconds enters the setup menu. In setup
mode, the MENU button moves from one menu selection to another. The BACK
button moves the user backward through the vario us setup options. The SAVE bu tton
will save a se tup param eter to memory. The UP, DOWN, LEFT and RIGHT arrow
buttons are used to select a nd change setup parameters.

Note:
The FC220 fl ow monitor re quires a level sensor to ope rate. Two and three wire level

sensors with 4-20mA, 0-5 volt and 0-1 volt outputs are sup ported. A sen sor is not
supplied with the FC220, contact Global Water for more information on available
sensors.

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Global Water

800-876-1172 • globalw.com

II. FC220 Specif ications:

Power Requirements: 12VDC or 18-24VDC Input, +/-10%
Supply Current: 13mA + Sensor Current + Backlight + 4-20mA Output
150mA M aximum Total Cur rent
Backlight C urrent: 23mA when on
Internal Fuse: 315mA
Power Adap tor: 18VDC Universal Power Supply, 90-220VAC Input
Equation Fo rmats: Manning’s Equation for Round Pipes
Manning’s Equation for Rectangular Channels
Standard Flow Equation : Q=A*(B+Ch)^ D
3

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Order Polynomial: Q=A+Bh+Ch^2+Dh^3
Stored Flumes: H Type: 0.5, 0.75, 1.0, 1.5, 2.0
HS Type: 0.4, 0.6
Parshall : 1”, 2”, 3”, 6” , 9”, 12”, 24”, 36”, 48”, 60”, 72”
Palmer-Bowlus: 4”, 6”, 8”, 10”, 12”, 15”, 18”, 24”, 30”, 36”
Trapezoi da l: 60º
Stored Weirs: Rectangular: 1’, 2’ 3,
V-Notch: 22.5º, 30º, 45º, 60º, 90º, 120º
Cipollet ti: 1’, 1.5’, 2’, 3’, 4’
Lookup Table: One, Factory Programmable Only
Output Relays: 4 Independent SPDT Relays, Pulse On Time = 1 Second
Contact Rating: 8A @ 250VAC, 5A @ 30VDC Resistive
Level Sensor Input: 2-Wire or 3-wire, 4-20mA, 0-5VDC, 0-1VDC
Output: 4-20mA Scalable
Display/Keypad: 16 Character x 2 Line Backlit LCD, 8-Button Tactile Keypad
Flow Capacity: 7 Digit Maximum, Auto-Floating point
Totalizer Capacity: 9 Digit Maximum
Auto-Floating Point, Engineering notation su ppor ted
Max Volume = 1.0995E12 Cubic Feet (1.0995 x 10^ 12 Ft³)
Level Capacity: 5 Digit Maximum
Display Resolution: 3 Decimal Pla ces Maximum, Auto-Adjusting
Accuracy: Sensor Accuracy + Equation/Table Error + 0.1% + 1 Digit
Level Units: Feet, Inches, Meters, Centimeters
Volume Units: Cubic Feet, Gallons, Million Gallons, Cubic Meters, Liters
Time Units: Seconds, Minutes, hours, Days
Flow Units: 20 Combinations of Volume and Time Units Above
Dimensions: 7.1”W x 5.1”H x 1.4D (180mm x 130mm x 35mm)
Weight: 1 lb

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Global Water

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III. Flow Calculation Modes

The FC220 de termines flow from water level in several different ways. Standard flow
equations, Manning’s Equation, polynomials or a lookup table can all be used. The
following equation formats calculate flow in cubic feet per second based on the
measured wa ter level in feet. A conversion is made by the microprocessor so that the
display and 4-20mA output work in the user defined flow units.

Flow Equation:

There are standard flow equati on parameters for over 40 flumes and weirs stored in the
FC220. The user also has the ability to enter their ow n parameters for the flow
equation in the form of:

Q = A * (B+Ch)^D

Where:
Q = Flow in Cubic Feet Per Second
A - D = User Programmable C oefficients. If B is not used, enter zero
h = Water Level in Feet

If this mode is selected, the user is prompted to enter the four param eter s in the
equation, A, B, C and D.

Manning’s Equation:

The Manning’s Equation is a widely accepted way of ca lculating the flow in any
gravity feed partially full channel of known geometry. Two applications are
supported, round pipes and rectangular channels. T he equation is in the form of :

Q = ( 1.486 / n ) * WA * ( WA / WP ) ^ 0.6667 * ( Slope ) ^ 0.5

Where:
Q = Flow in cubic feet per second
n = Roughness Factor
WA = Wetted Area in Feet², cross sectional area of the w ater at any given depth
WP = Wetted Pe rimeter in ft, length of bottom and side s tha t is we t at any given de pt h
Slope = Slope of channel or pipe, drop in elevation divided by length of drop.

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Global Water

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In these modes the user is either prom pted to enter the pipe diameter or rectangular
channel width, in use r programmable units. The WA and WP are automatically
calculated ba se d on the diameter or width, and the measured water level.

The roughness factor is determined by the construction material, typical values are:

0.010 Plastic, othe r smooth surf aces

0.012 Smooth unpainted steel

0.013 Painted steel, coated cas t iron

0.013 Clay drainage tile, sm ooth asphalt

0.013 Finished conc rete

0.014 Vitrified clay sewer tile

0.014 Uncoated cast iron

0.017 Unfinished concrete

0.024 Corrugated metal storm drain

Polynomial:

A best fit 3

rd

order poly nomial can also be used to calculate flow. This is useful when
you need to find an equatio n that best fits measured data or a lookup table. The
equation is in the for m of:

Q = A + Bh + Ch² + Dh³

Where:
Q = Flow in cubic feet per second
A - D = User defined coefficients
h = Water level in feet

When selec ting this mode, the user is prompted to enter the values for A, B, C and D.

Look-Up Table:

For applications where a single equation does no t properly calculate flow, a single
look-up table can be programmed into the FC220. This is a factory programmable
option only. Data for this table must be provided to G lobal Water in two columns and
no more than 200 lines. The firs t column is water level in fee t and the second column
is the flow in cubic feet per second at that water level. Liner interpolation is
automatically done when a measured water level is between two data points.

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