United Kingdom:One Omega Drive, River Bend Technology Centre
ISO 9002 Certifi edNorthbank, Irlam, Manchester
M44 5BD United Kingdom
TEL: +44 (0)161 777 6611 FAX: +44 (0)161 777 6622
Toll Free in United Kingdom: 0800-488-48
e-mail: sales@omega.co.uk
.
dy 1868, 733 01 Karvin. 8
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply.
OMEGA is constantly pursuing certifi cation of its products to the European New Approach Directives.
OMEGA will add the CE mark to every appropriate device upon certifi cation.
The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifi cations without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.
3000 Series OMEGAMAG display version
6-2551.090-1-OM Rev. A 5/06
SAFETY INSTRUCTIONS
1. Depressurize and vent system prior to installation or removal.
2. Confi rm chemical compatibility before use.
3. Do not exceed maximum temperature/pressure specifi cations.
4. Wear safety goggles or faceshield during installation/service.
5. Do not alter product construction.
1.0 Description
The OMEGAMAG measures the fl ow rate in a full pipe by monitoring the voltage produced when the (conductive) fl uid moves through a
magnetic fi eld.
Output options include a traditional frequency signal and a 4-20 mA output.
The OMEGAMAG is available in two sizes that will accommodate pipes from ½ inch through 8 inch diameters.
Select from three different material combinations to match the magmeter to the application requirements.
Flow
Contents
1.0 Description 1
2.0 Specifi cations 2
3.0 Installation: Pipe fi ttings 3
3.1 Location of Fitting 3
3.2 Empty Pipe Detection 3
4.0 Overview of Display versions 4
5.0 Wiring 5
5.1 Basic Wiring 5
5.2 Wiring: Mirror Relay 1 output 5
5.3 FMG3000 and other manufacturer's instruments 5
5.4 Wiring to Omega Flow Instruments 6
5.5 Wiring Relays 6
6.0 View Menu 7
6.1 Resetting the Resetable Totalizer 7
6.2 Navigating the Menus 8
6.3 Keypad Functions 8
6.4 Security Code 8
7.0 Setup Menu 9
7.1 Averaging and Sensitivity 10
7.2 Bi-Directional Flow 11
7.3 Calibration Data 11
8.0 Calibration Menu 13
8.1 Volume method of calibration 13
8.2Rate method of calibration 13
9.0 Relay Menus 14
9.1 Pulse Relay mode 14
9.2 Total Relay mode 14
9.3 High, Low, or Window Relay modes 15
10.0 Test Menu 16
11.0 Options Menu 16
11.1 Output Modes 16
12.0 Technical Information 17
12.1 Grounding 17
12.2 Maintenance 18
12.3 Troubleshooting 18
13.0 Ordering Information 19
2.0 Specifi cations
Wetted Materials:
• Sensor body and Electrodes/Grounding ring:
• -P0, -P1: Polypropylene and 316L Stainless Steel
• -V0, -V1: PVDF and Hastelloy-C
• -W0, -W1: PVDF and 316L Stainless Steel
• O-rings: FPM standard
optional materials: EPDM, Kalrez®
The user is responsible for determining the chemical
suitability of these materials for any specifi c
application.
• Case: PBT
• Display window: Polyamide
Power Requirements
• 4 to 20 mA: 21.6 to 26.4 VDC, 22 mA maximum
400 mV p-p maximum ripple voltage
• Frequency: 5 to 26.4 VDC, 15 mA maximum
• Digital: 4.5 to 6.5 VDC, 15 mA maximum
• Auxiliary: 9 to 24 VDC, 0.4 A maximum
• Reverse polarity and short circuit protected
Performance
• Pipe size range: ½ to 8 in. (DN15 to DN200)
• Flow Range Minimum: ±0.05 m/s (±0.15 ft/s)
(Bi-directional) Maximum: ±10 m/s (±33 ft/s)
Display Specifi cations
Characters: 2 x 16 alpha-numeric
Contrast: User-set in four levels
Backlighting: requires external 9-24 VDC, 0.4 mA max.
(available on models with relays only)
Environmental
• Enclosure rated NEMA 4X/IP 65
• Storage Temperature: -20°C to 70°C (-4°F to 158°F)
• Relative Humidity: 0 to 95% (non-condensing)
• Operating Temperature
Ambient: -10° to 70°C (14°F to 158°F)
Media: 0° to 85°C (32°F to 185°F)
Max. operating pressure: 10.3 bar @ 25°C (150 psi @ 77°F)
1.4 bar @ 85°C (20 psi @ 185°F)
Pressure vs. Temperature
psi
bar
200
14
160
11
8
120
6
80
3
40
Operating Pressure
Acceptable
Media Range
Frequency output:
• Output modes: Freq, Freq÷10, or Mirror Relay 1
• Max. Pullup Voltage: 30 VDC
• On state voltage drop: <0.8 V @ 20 mA
• Short Circuit Protected: ≤30 V @ 0Ω pull-up for one hour
• Reverse Polarity Protected -40 V
• Overvoltage Protected to 40 V with pullup resistor
• Max. Current Sink: 50 mA, current limited
• Maximum cable: 300 m (1000 ft.)
Tests, Approvals & Standards
• UL, CUL listed
• CE:
• EN61326: Immunity & Emissions for Control Equipment
• EN61010: Safety
2
°F
°C
Dimensions
174.5 mm/
6.87 in.
Magmeter w/Display
for ½ in. to 4 in. pipe
04080120160200
-184
27
49
7193
Media Temperature
95.3 mm/
3.75 in.
207.5 mm/
8.17 in.
Magmeter w/Display
for 5 to 8 in. pipe
240
115
3.0 Installation: Pipe fi ttings
Omega offers a wide selection of installation fi ttings that control the position of the magmeter electrodes in relation to the dimensions of
the pipe. You will fi nd a complete list of order numbers for installation fi ttings in the K-factor table in section 7.3.
TypeDescription
Plastic tees
0.5 to 4 inch versions
PVC or CPVC
Metric
Union
Fitting
For pipes from DN 15 to 50 mm
PP or PVDF
TypeDescription
Iron, Carbon Steel,
316 SS Threaded
tees
0.5 to 2 in. versions
Mounts on threaded pipe ends
Carbon steel &
stainless steel
Weld-on
2 to 4 inch, cut 1-7/16 inch hole in pipe
Over 4 inch, cut 2-1/8 inch hole in pipe
Weldolets
PVC
Saddles
Iron
Strap-on
saddles
2 to 4 inch, cut 1-7/16 inch hole in pipe
6 to 8 inch, cut 2-1/8 inch hole in pipe
2 to 4 inch, cut 1-7/16 inch hole in pipe
Over 4 inch, cut 2-1/8 inch hole in pipe
Fiberglass
tees &
saddles:
Metric
Wafer Fitting
FPT
1.5 in. to 8 in. PVDF insert
FPS
For pipes DN 65 to 200 mm
PP or PVDF
3.1 Location of Fitting
The magmeter can only measure fl ow if the pipe is full.
If the piping system has entrained air pockets, take steps to locate the sensor so the air pockets will not contact the electrodes.
InletOutlet
Flange
10 x I.D.5 x I.D.
+GF+
Reducer
15 x I.D.5 x I.D.
+GF+
90° Elbow
20 x I.D.5 x I.D.
+GF+
Select a location with suffi cient distance of
straight pipe immediately upstream of the sensor.
2 x 90° Elbow
+GF+
2 x 90° Elbow
3 dimensions
+GF+
Valve/Pump
+GF+
25 x I.D.5 x I.D.
These confi gurations guarantee that the pipe is always
fi lled. The sensor cannot be exposed to air bubbles.
Avoid these situations unless you are certain that the
sensor will not be exposed to air bubbles.
In a gravity-fl ow system, the tank must be designed so the level
does not drop below the outlet.
This causes the pipe to draw air in from the tank.
If air bubbles pass across the Magmeter electrodes, the output
will become erratic.
3.2 Empty Pipe Detection
40 x I.D.5 x I.D.
50 x I.D.5 x I.D.
O.K.O.K.O.K.
+F
G
+
GF
+GF+
+GF+
+
Vertical flow is OK IF the pipe remains full at all times.
+GF
+
+GF+
+
+G
F
+
If the pipe is not full, or the electrodes are not immersed, the
fl ow display will show zero and all output functions will behave
accordingly.
If the magmeter electrodes are exposed to fl ow transitions and air
bubbles, the measurement may be incorrect until the conditions
are stabilized.
3
4.0 Overview of Display Magmeter
Display Magmeters use a dual-sided electronics module and dual conduit ports. Unused ports must be sealed to prevent corrosion and
moisture from entering the circuitry.
1. The lower set of conduit ports provide access to the wiring terminals for:
• Loop Power
• Flow Output Signal, whether it is a current loop, a frequency or the Mirror Relay 1 output.
2. The upper set of conduit ports provide access to the wiring terminals for:
• Relay output wiring
• Auxiliary power for relay coils and display backlight
3. The sensor is marked with a directional arrow to indicate the direction identifi ed as forward fl ow.
An adhesive decal is also provided that can be affi xed to the pipe to indicate the direction of forward fl ow.
Flow in the opposite direction from the arrow will be identifi ed as reverse fl ow on the display by a "-" symbol.
4. The terminals in the magmeter are designed to accomodate 14 to 22 AWG conductors.
5. The display includes two LEDs that light when Relay 1 or Relay 2 are activated.
• All three relays can be monitored by scrolling to the Relay Status display located in the View
English >
menu.
• If the Language option has not been made, new magmeters will always open with the Select Language display.
6. The part number, serial number and output type are identifi ed on the electronics module.
®
420 GPM
123456.78 >
5.
Relay Outputs
Auxiliary Power
NO1
NC1
NO2
NC2
NO3
NC3
4.
Relay 1
C1
Relay 2
C2
Relay 3
C3
V+
V-
Aux Pwr
2.
Language
1.
4-20 mA Loop Out
Digital Out
Frequency Out
Mirror Relay 1 Out
3.
4.
4
3
2
1
s/n 60504201234
60504201234
p/n 3-2551-11
3-2551-11
4-20/freq out
6.
4
5.0 Wiring
5.1 Basic Wiring
Frequency output
• FMG3001 and FMG3101 OMEGAMAGs may be
programmed to provide an open collector FREQUENCY
output.
• The maximum frequency output is 1000 Hz (@ 10 metres per
second)
• If the Frequency ÷ 10 output is selected, the maximum
frequency is 100 Hz (@ 10 meters per second)
• AUX PWR must be connected to power the display
backlighting and to power the relay coils if included.
NO1
Auxiliary Power for:
Display backlighting
Relay Coils
NC1
C1
NO2
NC2
C2
NO3
NC3
C3
V+
V-
Relay 1
Relay 2
Relay 3
Aux Pwr
VDC
4.5-26.4
4-20 mA output
FMG3002 and FMG3102 OMEGAMAGs provide a passive 4-20
mA loop output.
• External loop power (24 VDC) is required.
• Factory standard calibration is 4 - 20 mA = 0 - 5 m/s.
• The 4-20 mA output can be spanned to any range, from -10
m/s to +10 m/s.
• AUX PWR must be connected to power the display
backlighting and to power to the relay coils if included.
NO1
Auxiliary Power for:
Display backlighting
Relay Coils
NC1
C1
NO2
NC2
C2
NO3
NC3
C3
V+
V-
Relay 1
Relay 2
Relay 3
Aux Pwr
Ground
Signal
Frequency Out
4
- VDC
3
2
+ VDC
1
Frequency ÷ 10 Out
(5 to 26.4 VDC)
Magmeter
5.2 Wiring: Mirror Relay 1 output
The FMG3001 and FMG3101 OMEGAMAGs can be confi gured
to provide an Open Collector output in lieu of the sensor signal
provided by Frequency output selection. The Open Collector
Output can be programmed via the Relay 1 menu.
Magmeter
Not used
4
Ground
3
Open Collector Out
2
1
5-24 VDC
4
3
2
1
- VDC
+ VDC
21.6 to
26.4 VDC
4
20
4-20 mA Loop Output
Magmeter
5.3 The OMEGAMAG and other manufacturer's instruments
When using the magmeter in a system with other manufacturer's
equipment, a pull-up resistor may be required to power the open
collector output.
NO1
Other Manufacturers
Flow Instrument
Ground
Frequency Input
5-24 VDC Out
Auxiliary Power for:
Display backlighting
Relay Coils
Sensr Gnd
(SHIELD)
Sensr IN
(RED)
10 KΩ
Pull-up Resistor
NC1
NO2
NC2
NO3
NC3
C1
C2
C3
V+
V-
Magmeter
Relay 1
Relay 2
Relay 3
Aux Pwr
4
Ground
3
Frequency Out
2
1
24 VDC
Ground
5-24 VDC
5
NC3
y
C3
5.4 Wiring to Omega Flow Instruments
The OMEGAMAG and FP90 series Flow Transmitters
When connecting the magmeter to any FP90 model Transmitter, the AUXILIARY power in the FP90 must always be connected.
V+
To
12-24 VDC
Power Source
System Pwr
4
Loop -
System Pwr
3
Loop +
AUX
2
Power -
AUX
1
Power +
Terminals 3-4: 4-20 Loop, Loop Power
Terminals 1-2: Auxiliary Power
FP90 Flow Transmitter
Output -
6
Output +
5
Open Collector
Output
9
8
7
Sensor Input
from
Magmeter
Sensr Gnd
(SHIELD)
Sensr IN
(RED)
Sensr V+
(BLACK)
V-
Magmeter
Aux Pwr
4
Ground
Ground
3
Frequency Out
2
5-24 VDC
1
24 VDC
OMEGAMAG and FPM5500, FPM9020A
Auxiliary Power for:
Display backlighting
Relay Coils
FPM5500, FPM5600A
12-24 V
10 W
+
-
+
AUX
output
2
+
1
Gnd
Tot a l
reset
4-20
mA
-
12-24 V
10 W
Std. Sensor
Freq. IN
Freq. IN
Sen. Pwr.
Open Collector
Sensor
+
PLS
Iso. Gnd
output
Gnd
5.5 Wiring Relays
Relay 1, Relay 2 Type: Mechanical SPDT
Rating: 5A @ 30 VDC max., 5 A @ 250 VAC max
Relays 1 and 2 are dry contact relays rated for 5 A maximum current.
Relays 1 and 2 are best suited for switching high voltage loads, such as AC
powered pumps and valves.
When used to switch inductive loads, dry contact relays may be damaged by
arcing. Omega recommends the installation of a fi lter device to prevent such
damage.
FP90RC RC Filter kit (for relay use)
C3
V+
V-
Magmeter
NO1
NC1
NO2
NC2
4
3
2
1
C1
C2
Rela
Aux Pwr
Ground
Ground
Frequency Out
5-24 VDC
24 VDC
Relay 1
Mechanical Relays:
5A @ 250 VAC
5A @ 30 VDC
Relay 2
Relay 3 Type: Solid State
Rating: 50 mA @ 30 VDC, 50 mA @ 42 VAC
Relay 3 is a solid state relay. It can be applied exactly the same as a dry
contact relay, but the current rating is 0.2 A (200 mA) maximum. Relay 3 is
best suited to pulse applications and low voltage loads.
Relay Terminal Legend:
NO: Normally Open
NC: Normally Closed
C: Common
6
Auxiliary power must be connected to operate the relays and to
power the display backlighting. Auxiliary power is fully isolated.
The Loop Power supply may be used for Aux power if the power
source provides a suffi cient current rating.
NO3
NC3
C3
V+
V-
Solid State Relay 3:
50 mA max @ 30 VDC
Relay 3
50 mA max @ 42 VAC
Auxiliary Power
9 to 24 VDC
0.4 A Maximum
6.0 View Menu
The VIEW menu contains all of the basic information available from the magmeter.
• The normal operating display shows the FLOW RATE on the top line of the display and
the Resetable Totalizer on the lower line of the display.
• The Right Prompt symbol (>) always indicates a sub-menu associated with the current
display. In this display it points the way to the TOTALIZER RESET function. See section
6.1 for detailed instructions.
• With AUXILIARY power connected to the magmeters with Relays, the display will be
backlit. There is no switch to turn the backlight off.
• A fl ashing character or text on the display indicates that the item is being edited.
This manual uses a (red) star to illustrate a fl ashing display.
• The following information is viewed by scrolling UP or DOWN. These displays will remain
in the display for 10 minutes, then the normal operating display will return.
Show the permanent total. This totalizer cannot be reset.
Shows the current output. For 4-20 mA Output models only.
Relay States shown for units with a relay board.
®
1234.56 GPM
876543.21 >
Gallons
Perm 876543.21
Current Output
14.89 mA
Relay 1 2 3
Off Off Off
6.1 Resetting the Resetable Totalizer
®
1234.56 GPM
876543.21 >
1234.56 GPM
876543.21 >
Enter Code
0000
Reset Total ?
Yes No
Enter menus from this display. See section 6.2.
>
Enter Menu
1. From the normal operating display, press the RIGHT arrow key.
2. The resetable totalizer can be confi gured to require the security code before allowing the
reset. If the Total Reset set to "RESET OFF" this display will not appear.
See section 11, Options Menu for instructions.
3. Press any arrow key to toggle the fl ashing selection from NO to YES.
123456.78 GPM
000000.00 >
4. Press the ENTER key. The totalizer will reset to 000000.00 and the display will immediately
return to the normal operating display.
7
6.2 Navigating the Menus
Normal Operation Display
The normal operating display shows the Flow Rate on the top line and the Resetable
Totalizer on the bottom line.
• All menu instructions in this manual assume that the instrument is showing this
display.
Menu Directory
The magmeter uses seven main menus to provide access to the calibration and
programming features. Each menu serves a specifi c function.
Starting from the normal operating display, there are two ways to access the menus:
1. Press the UP arrow key to scroll to the Enter Menu display, then press the RIGHT
arrow key.
2. Press the ENTER key and hold it for about three seconds.
Setup Menu
This menu contains all of the settings and information that the magmeter requires to
operate, including the K-factor, the totalizer settings, low fl ow cutoff, and several display
Calibration Menu
The Calibration menu provides two different methods for adjusting the calibration. See
section 8.0 for details related to this menu.
Relay Menus
Each of the available relays in the FMG3001 and FMG3002 are programmed from their
own dedicated menu. See section 9 for details related to these menus.
Note: Menu items associated with Relay 2 and relay 3 are suppressed in models without
relays. See section 9.0 for details related to this menu.
1234.56 GPM
876543.21 >
Enter Menu
>
Enter Menu
Setup >
Enter Menu
Calibration >
Enter Menu
Relay 1 >
Enter Menu
Relay 2 >
®
ENTER
Or
3s
Test Menu
The Test menu is used to manually toggle relays or to induce a known value out of the 420 mA terminals. See section 10.0 for details related to this menu.
Options Menu
The Options menu contains those settings and values that are usually programmed during
the initial installation, and then seldom modifi ed, including the SECURITY CODE (see
section 6.4). See section 11.0 for details related to the Options menu.
6.3 Keypad Functions
6.4 Security Code
The magmeter has a security code that can be programmed to
Scrolls UP through any menu.
If the display shows any fl ashing character or selection,
scrolls UP to the previous value or selection.
any four digit numerical value.
• The factory setting is 0-0-0-0.
• To program the security code go to the Options menu.
• The security code will be required to edit any of the items in
Scrolls DOWN through any menu.
If the display shows any fl ashing character or selection,
scrolls DOWN to the next value or selection.
the menus. It is required only once for each editing session.
• Record the custom security code here or in a safe location.
• If the security code is lost, contact your Omega service
center for instructions.
Press the UP and DOWN keys together to abandon any
unsaved edits and return to the previous display.
Opens the menu currently being displayed.
In Edit modes, advances the fl ashing character.
In menus with only two options (Yes or No, On or Off)
toggles between selections.
Security Code ______ ______ ______ ______
ENTER
Saves a new selection in any menu.
From Normal Operation display, jumps to fi rst selection
in Menu directory (when held for three seconds)
Enter Menu
Relay 3 >
Enter Menu
Test >
Enter Menu
Options >
Enter Code
0000
WRITE IT DOWN!
8
7.0 Setup Menu
The Setup menu contains all of the parameters necessary for the OMEGAMAG to begin measuring
fl ow.
®
NOTE: The Security Code must be entered before any changes can be made to the Setup menu.
See the Options menu in section 11 for details.
Enter Menu
Setup >
Enter Code
0000
Use the keypad to navigate through each setting.
ENTER
K-Factor: See the charts in section 7.3 for values in pulses per U.S. Gallon or in pulses
per Liter. To use other units, convert the published values as appropriate.
The values shown for each menu item represent the factory
standard setting. All magmeters are packaged with these
settings.
K-Factor
060.000 >
Pipe Size: Select the pipe size that is nearest to the nominal pipe size.
Pipe Size
2” DN50 >
Flow Units: Set the units for the application. Four characters are available. The fi rst three characters can be set to any symbol or
alpha character, upper or lower case. The following special symbols are located between the upper case and lower case menus:
• (centered dot) µ (micro) _ (blank)
- (dash) / (slash) 3 (for cubic units)
Flow Units
The last character selects the timebase for the fl ow rate measurement.
Select S/s (seconds) M/m (minutes), H/h (hours) or D/d (days)
GPM >
Set 4 mA: In the FMG3002 and FMG3102 versions only, set the fl ow rate where the current
output will be 4 mA.
Set 20 mA: In the FMG3002 and FMG3102 versions only, set the fl ow rate where the
current output will be 20 mA.
The 4-20 mA output may be spanned to monitor forward and reverse fl ow rates.
Total Factor: Set the factor by which the totalizer will count. This setting is made in the
application units (ie; gallons, liters, etc..)
Totalizer Units: Set the Totalizer Units. This setting serves as a label for the totalizer
displays only. It has no effect on the measurement. The special characters listed in the
Total Factor settings are available here also.
Low Flow Cutoff: Set a fl ow rate that the magmeter will use as a minimum threshhold. If
the fl ow rate falls below this value, the magmeter will respond as if the fl ow were zero.
Averaging: Set the averaging period based on the installation and fl ow conditions. Smaller
values allow the magmeter to respond to changes in fl ow rate quickly, while larger values
smooth the fl uctuations caused by installation and fl ow conditions. See section 7.1 for
details.
Set 4 mA
-100 GPM >
Set 20 mA
100.00 GPM >
Total Factor
1000.0 >
Totalizer Units
Gallons >
Low Flow Cutoff
0.5 GPM >
Averaging
25 secs >
Sensitivity: Set a percentage of maximum range by which the fl ow must change to
override the averaging feature and "jump" quickly to the new fl ow rate. See detailed
explanation in section 7.1.
Sensitivity
100% >
9
7.1 Averaging and Sensitivity
Even the most carefully engineered fl ow systems may experience
erratic and unstable conditions. If the instability is communicated
to the output functions, the results may create problems for
control devices.
To alleviate these issues, the magmeter provides two adjustments
that operate in tandem. The information here will help in
determining the appropriate settings for any specifi c application.
Averaging
• The AVERAGING setting dictates the time over which the
magmeter will average the fl ow signal.
The LCD display is updated every second. With averaging at
14 seconds, the fl ow rate on the display is an average of the
previous 14 seconds input.
Short averaging times provide the fastest display and output
response to changes in the fl ow rate.
Higher averaging times help to smooth the display and
current output where the fl ow in the pipe is erratic or unstable
due to installation limitations.
Sensitivity
• The SENSITIVITY setting determines how the magmeter
responds to sudden surges in the fl ow rate. It "overrides"
the Averaging function just long enough to allow an actual
change in fl ow rate to be displayed, then resumes the
averaging. The result is a smooth fl ow display and a quick
response to large shifts in the fl ow rate.
No Averaging
With AVERAGING set to zero, the fl ow rate will be displayed
immediately and with no fi ltering. This line represents the
actual output of the fl ow sensor as it responds to unstable fl ow
conditions in the pipe.
Velocity
Time
10 s20 s30 s40 s50 s60 s70 s
Averaging Only
With AVERAGING set to 50 seconds and SENSITIVITY still set to
zero the fl ow rate is stabilized, but a sharp change in fl ow rate is
not represented on the display or at the output for 50 seconds or
longer.
Velocity
The settings for Sensitivity represent a percentage of the
magmeter's maximum range, or 10 m/s.
Example: A sensitivity setting of 25% means that the fl ow
rate must change instantly and by more than 2.5 m/s before
the function is enabled.
NOTE: The SENSITIVITY function is ineffective if the Averaging
function is set to zero.
CAUTION
The SENSITIVITY function changes the response
characteristics of the magmeter. If used as part of a
tuned closed loop control system such a change may be
undesirable.
Time
10 s20 s30 s40 s50 s60 s70 s
Averaging and Sensitivity
With AVERAGING at 50 seconds and SENSITIVITY set to
25%, the fl ow rate is stabilized, while the sudden shift in fl ow is
refl ected very quickly.
Velocity
Time
10 s20 s30 s40 s50 s60 s70 s
10
7.2 Bi-Directional Flow
• The magmeter is designed to measure bi-directional fl ow.
• The forward fl ow direction is indicated by the directional arrow molded into the side
Flow
of the magmeter sensor.
• The conduit ports are assembled at the factory to point UPSTREAM. They may be reversed by
disassembling the components of the magmeter and reassembling.
Flow Rate Display: The "+" sign is suppressed during forward fl ow.
"-123.45 GPM" during reverse fl ow.
Totalizer Display: The totalizer will count during forward fl ow conditions only.
During reverse fl ow the totalizer will not increment.
Relay Outputs: May be set to detect reverse fl ow: "Low Setpoint at -25GPM."
4-20 mA output: May be scaled to span any fl ow range:
For example: "4 to 20 mA = -100 GPM to +100 GPM"
Frequency output, Frequency ÷ 10 output: Reverse fl ow is processed same as forward fl ow in the frequency output magmeters.
7.3 Calibration Data: K-factors
Plastic Installation Fittings:
PVC Tees and Saddles
PIPE SIZE FITTING K-Factor K-Factor
(IN.) TYPE Gallons Liters*
The K-factors published in this manual assume that the fl ow conditions in the pipe are
ideal.
Many factors that affect the fl ow rate are beyond the control of the magmeter; variations in
actual pipe dimensions, pipe smoothness, and other fl ow conditions will contribute to the
total system error.
Performing a custom calibration with the magmeter in place will adjust the K-factor and
can serve to compensate for installation conditions that may be less than ideal.
Select one of the calibration methods in this menu to achieve the most accurate
measurement possible in a specifi c application.
®
1234.56 GPM
876543.21 >
NOTE: The Security Code must be entered
before selecting the calibration method.
Enter Code
0000
Enter Menu
>
Enter Menu
Or
ENTER
Setup >
Enter Menu
Calibration >
8.1 Volume method of calibration
Use the volume method of calibration if the fl uid passing the magmeter can be measured by a volumetric method (as in a vessel of
known volume, or by weight). It requires the ability to pump a known volume of water past the magmeter, and then input the volume
into the magmeter program. It is most useful for small pipes and lower fl ow rates.
When performed properly, volumetric calibration is the most accurate method. For best results a fi ve minute test period is
recommended, and the test period should be no less than two minutes.
Press Enter
To St art
Press Enter
At START, the magmeter begins counting the fl ow past the sensor.
At STOP, the magmeter stores the total fl ow accumulated since the START.
To Stop
Enter Volume
Enter the VOLUME that has been pumped past the sensor.
000000. GPM
Value must be
more than 0.0
This error message appears if volume entered or the accumulated fl ow is zero. Repeat the
test after checking the system.
This message appears if the new K-Factor is less than 0.0001 or greater than 999999.
K-Factor
Out of Range
To correct the problem, perform the volumetric fl ow again, and be certain that the volume
entered is accurate.
3s
K-Factor
45.6789
Using the information from the VOLUME method, the magmeter will recalculate a new K-Factor.
Press ENTER to accept the new value, or use the keypad to adjust the value.
8.2 Rate method of calibration
Use this method if the magmeter must be calibrated to match a reference fl ow meter. This is the method most commonly used by
monitoring agencies, and for large pipes where volumetric calibration is impractical. The accuracy of this calibration method is largely
dependent on the accuracy of the reference meter and the proximity of the reference to the magmeter.
The fl ow rate shown is based on the existing calibration of the magmeter.
Set New Flowrate
45.6789
K-Factor
Out of Range
K-Factor
56.7890
Use the keypad to modify the fl ow rate to match the reference meter. The magmeter will
automatically calculate a new K-Factor based on the new fl ow rate.
This message appears if the new K-Factor is less than 0.0001 or greater than 999999.
To correct the problem, reexamine the fl ow rate and make certain it is accurate.
Using the information from the RATE MATCHING method, the magmeter will recalculate a new
K-Factor. Press ENTER to accept the new value, or use the keypad to adjust the value.
13
9.0 Relay Menus
Magmeter models FMG3001 and FMG3002 have two dry contact
relays (Relays 1 and 2) and one Solid State relay (Relay 3).
®
Any of these relays can be set to any of the operating modes
listed below.
The setpoint values for HIGH, LOW and WINDOW modes can be
set to negative values if required.
For example, a LOW alarm might be set to activate if the fl ow rate
falls below -10 GPM.
Negative values are not available for relays in PULSE or TOTAL
modes.
Off: If a relay is not used, it can be turned Off to prevent contact
wear.
NOTE: The Security Code
must be entered before
modifying the relay menu.
Enter Code
0000
9.1 Pulse Relay mode
Program a relay to activate for a fi xed period, for each volume of
fl uid that passes the sensor.
For example, program the relay to pulse once for 100 ms for
every 3 gallons that pass by the sensor.
1234.56 GPM
876543.21 >
Enter Menu
>
Enter Menu
Setup >
Enter Menu
Calibration >
Enter Menu
Relay 1 >
ENTER
Or
3s
Relay Volume: Set the volume of fl uid that the magmeter must
Relay 1 Mode
Pulse >
Relay 1 Volume
0.0000 Gal >
Relay 1 Width
0.1 secs >
measure before activating the relay for one pulse.
Pulse Width: Adjust the length of time the relay will remain
activated. The pulse width setting is dependent on the type of
external equipment being connected to the relay.
9.2 Total Relay mode
Program a relay to activate when the Resetable totalizer reaches a specifi c value. The maximum setting is 999999.
Application example: A fi lter must be replaced in a R.O. system every 10000 gallons. The service representative that installs a new
fi lter sets relay 3 to Total mode, sets the setpoint at 10000 and resets the totalizer to 000000.00. When the totalizer is reset, the relay
will be deactivated and the process begins anew.
Every time the Totalizer reaches 10000, the relay activates and lights a message indicator to remind the operator to contact the service
representative to replace the fi lter.
Relay 1 Mode
Total >
Relay 1 Set High
000000 >
14
9.3 High, Low, or Window Relay modes
Program the relay to activate when the fl ow rate reaches a setpoint (High or Low) or when the fl ow
rate moves outside of a prescribed range (Window).
Reverse Flow
The setpoint values for HIGH, LOW and WINDOW modes can be set to negative values if required.
For example, a LOW alarm might be set to activate if the fl ow rate falls to -10 GPM.
Process
Hysteresis
Relay behavior with LOW Setpoint
Low Setpoint
Time
1234.56 GPM
876543.21 >
Enter Menu
>
Enter Menu
Setup >
®
ENTER
Or
3s
Process
High Setpoint
Relay behavior with HIGH Setpoint
Hysteresis
Time
Process
High Limit
Window
Low Limit
Hysteresis
Relay behavior with WINDOW Setpoints
Hysteresis
Time
Relay activated
Relay deactivated
Set Low: Set the fl ow rate where a Low relay will be activated.
Set High: Set the fl ow rate where a High relay will be activated.
Set Window: Set a range where the relay will be deactivated. If
the fl ow rate moves outside of the low or high boundaries the
relay will be activated.
Hysteresis: Set a fl ow rate increment where the relay will be
deactivated. The hysteresis setting serves to prevent relay
"chatter" when the fl ow rate recovers from an alarm condition by
requiring the fl ow rate to move substantially within the setpoint.
Example: If high setpoint is 100 GPM, and hysteresis is 5 GPM,
the relay will be activated if fl ow rate reaches 100.1 GPM, but will
only be deactivated when the fl ow rate is 95 GPM (5 GPM inside
the setpoint.)
Delay: Set a time period for the relay to wait after reaching
the setpoint. This delay serves to prevent the relay "chatter" by
allowing the fl ow rate time to move back within the setpoint.
Enter Menu
Calibration >
Enter Menu
Relay 1 >
NOTE: The Security
Code must be entered
before modifying the
relay menu.
Enter Code
0000
The values shown for each menu item represent the factory
standard setting. All magmeters are packaged with these
settings.
Relay 1 Mode
Low >
Relay 1 Mode
High >
Relay 1 Mode
Window >
Relay 1 Set Low
00.000 GPM >
Relay 1 Hys
00.000 GPM >
Relay 1 Delay
0.1 secs >
Relay 1 Set High
00.000 GPM >
Relay 1 Hys
00.000 GPM >
Relay 1 Delay
0.1 secs >
Relay 1 Set Low
00.000 GPM >
Relay 1 Set High
00.000 GPM >
Relay 1 Hys
00.000 GPM >
Example: If the delay is set to 5 seconds, in the example above
the relay will not be activated until the fl ow rate exceeds 100 GPM
for 5 seconds.
Relay 1 Delay
0.1 secs >
The menu repeats for Relay 2 and Relay 3.
15
10.0 Test Menu
The Test menu provides a simple method to verify that the system is operating properly. Auxiliary power MUST be connected to the
magmeter to activate the relays
Shown for 4-20 mA models Only
Use the keypad to enter any current output from 4.0 mA minimum
to 22.1 mA maximum.
Shown for Relay models Only
Toggle any of these relays ON and OFF to verify that the system
®
Enter Menu
Test >
Test Output
4.20 mA >
Test Relay 1
Open Closed >
is operating properly.
Test Relay 2
Open Closed >
Test Relay 3
Open Closed >
Auxiliary power MUST be
connected to the magmeter to
test the relays.
V+
Auxiliary Power
V-
9 to 24 VDC
0.4 A Maximum
11.0 Options Menu
The Options Menu contains those features and settings that will normally be set one time and then seldom changed. These include
language preference, decimal placement, Security Code assignment, etc.
®
Enter Menu
Options >
Language
English >
Security Code
**** >
Contrast
2 >
Select from English, German, French or Spanish.
This Selection will be displayed at fi rst power-up of a new magmeter.
Security Code can be set to any four digit number. Factory standard
setting is 0000.
Set for best view after the magmeter is installed. Larger number
means display appears darker.
The values shown for each
menu item represent the
factory standard setting. All
magmeters are packaged
with these settings.
Total Reset
Lock On >
Noise Rejection
60 Hz >
Flow Decimal
****.** >
Total Decimal
******.** >
Separator
ddd.d >
Lock ON requires the Security Code before resetting the Resetable
Totalizer. Lock OFF reset with no security code.
Filters out common 50 or 60 Hz electrical noise.
Set the maximum resolution for the FLOW RATE display by limiting
the decimal to this point. The Flow Rate display will auto-scale from
this resolution up to whole units.
Set the maximum resolution for the TOTALIZER display by limiting
the decimal to this point. The Totalizer display will always show this
resolution.
Select decimal point or comma for use in numeric displays.
Output Mode
Frequency >
For Frequency/Digital models only: Select Freq output, Freq ÷ 10
output, Mirror Relay 1 output or Digital output.
11.1 Output Modes
In FREQUENCY output mode, the OMEGAMAG serves as a traditional fl ow sensor and provides an output pulse that is compatible
with most Omega POWERED fl ow instruments. It is not compatible with the FPM5800 Self-Powered Flow Meter or the FPM5750
series Battery-powered fl ow totalizer. The frequency output range is from 0 Hz to 1000 Hz.
The FREQUENCY ÷ 10 output mode reduces the output frequency of the OMEGAMAG to a range that is useful for some
programmable logic controllers (PLC). The frequency output range is from 0 Hz to 100 Hz. This shift does not affect the stated
accuracy of the magmeter's frequency output.
The MIRROR RELAY 1 output mode allows Frequency models to use the Open Collector Output like a relay that can be programmed
via the Relay 1 menu.
If the magmeter is equipped with relays, this mode will mirror the settings of Relay 1.
If the magmeter is not equipped with relays, this mode can still be selected and programmed via the Relay 1 menu.
16
12.0 Technical Information
12.1 Grounding
Precalibration conditioning: The magmeter may appear to be unstable immediately after installation. Allow the sensor to sit in a full
pipe for 24 hours before beginning calibration and operation.
• Use a cable gland or a liquid tight connector to seal the cable ports from water intrusion.
• Use Tefl on tape or a suitable sealant on cable ports.
• The magmeter must be carefully grounded to eliminate electrical noise that may interfere with the measurement.
• Grounding requirements will vary with each installation.
• The following recommendations should be applied in sequence until the interference is eliminated.
The ground terminal on the outside of the yellow housing is connected internally to the grounding ring at the tip of the sensor.
Connect a conductor (14 AWG/2.08 mm2 wire recommended) from this terminal directly to Earth ground to prevent electrical noise
from interfering with the magmeter signal.
If the interference persists, apply step #2:
Connect grounding rings, metal clamps or grounding electrodes to the pipe immediately upstream and downstream of the
magmeter sensor location. These devices must be in contact with the fl uid.
If the interference persists, apply step #3:
The shield from the output cable must be terminated at the remote instrument ONLY.
This shield must not be connected at both ends!
If the interference persists, apply step #4:
Connect an additional wire (minimum AWG 14/2.08 mm
2
) from the remote instrument ground to the magmeter ground terminal.
Instrument
Do not terminate
shield at Magmeter
3.
1.
4.
Sensor
Grounding ring
Earth ground
4 in. to 50 in.
(10 cm to 1.3 m)
Grounding rings on plastic pipe
(Install between flanges)
metal straps on metal pipe
4 in. to 50 in.
(10 cm to 1.3 m)
2.2.
or
12.2 Maintenance
The OMEGAMAG requires very little maintenance. There are no user-serviceable components in the magmeter.
• If the fl uid contains deposits and solids that may coat the electrodes, a regular cleaning regimen is recommended.
• Do not use abrasive materials on the metal electrodes. Clean with soft cloth and mild detergent only.
• Use a cotton swab and mild detergent to remove deposits on the metal electrodes.
Environmental Recommendations:
• When used properly, this product presents no inherent danger to the environment.
• Please follow local ordinance when disposing of this or any product with electronic components.
12.3 Troubleshooting
SymptomPossible CauseSolution
• Output is erratic and unstable.
• Output is not 0 when fl ow is stopped.
• No 4-20 mA output.
• 4-20 mA current output is incorrect.
• No Frequency output.
• Magmeter installed too close to
upstream obstruction.
• Magmeter located in area exposed to
air bubbles/pockets.
• Magmeter is installed in pipe
backwards.
• Electrical noise is interfering with the
measurement.
• Electrodes are coated with deposits
or chemical oxide layers.
• Electrodes not adequately conditioned
in fl uid.
• Fluid is moving inside the pipe.
• Loop power not connected correctly.
• 4-20 mA is not scaled properly.
• Magmeter is wrong model.
• Incorrect setting in Options Menu.
• Wiring is not correct.
• Frequency input to other
manufacturer's fl ow instrument does
not have pull-up resistor.
• Relocate the magmeter to have
straight uninterrupted pipe upstream
of the sensor for at least 10 x the pipe
diameter.
• Eliminate air bubbles in the pipe.
• Remove the magmeter and reinstall
with the fl ow direction arrow on the
sensor body pointed DOWNSTREAM.
• Review the grounding of the
magmeter and the pipe. Install
adequate Earth ground to allow the
magmeter to operate properly.
• Allow the sensor to sit in full pipe for
24 hours then restart.
• Increase the Low Flow Cutoff.
(section 7.0)
• Connect 24 VDC ±10% connected to
loop terminals 1 and 3.
• Check and reset in the Setup Menu.
• Frequency model:
FMG3001 or FMG3101
• Select Frequency in the Options
menu.
• Check wiring, make corrections.
• Install 10kΩ resistor. (section 5.1)
• No fl ow rate, current output is 22 mA.
• Blank display, no backlighting, no
relay LEDS, but external equipment
using output signal is still working.
• Error Message:
"Error Not Saved"
18
• The fl uid is too clean for magmeter.
• Electronic component failure.
• Magmeter AUX power is not connected.
• Main power is below specifi cation• Correct the main power defi ciency
• Unsuitable application for magmeter.
• Return magmeter to factory.
• Connect AUX power (section 5.5)
(9 to 24 VDC, 0.4 A max.)
13.0 Ordering Information
Frequency output Magmeters
OMEGAMAG, PP/FREQ, ½ to 4 in. FMG3001-PP
OMEGAMAG,PVDF/FREQ, ½ to 4 in. FMG-3001-PVDF
OMEGAMAG, PP/FREQ, ½ to 4 in. FMG3001-PP-D
OMEGAMAG,PVDF/FREQ, ½ to 4 in. FMG-3001-PVDF-D
OMEGAMAG,PVDF/FREQ, 5 to 8 in. FMG3101-PVDF-D
OMEGAMAG,PP/FREQ, 5 to 8 in. FMG3101-PP
OMEGAMAG,PVDF/FREQ, 5 to 8 in. FMG3101-PVDF
OMEGAMAG, PP/FREQ, 5 to 8 in. FMG3101-PP-D
4-20 mA Loop output Magmeters
OMEGAMAG,PP/4-20, ½ to 4 in. FMG3002-PP
OMEGAMAG,PVDF/4-20, ½ to 4 in. FMG3002-PVDF
OMEGAMAG, PP/4-20, ½ to 4 in. FMG3002-PP-D
OMEGAMAG,PVDF/4-20, ½ to 4 in. FMG3002-PVDF-D
OMEGAMAG,PVDF/4-20, 5 to 8 in. FMG3102-PVDF-D
OMEGAMAG,PP/4-20, 5 to 8 in. FMG3102-PP
OMEGAMAG,PVDF/4-20, 5 to 8 in. FMG3102-PVDF
OMEGAMAG, PP/4-20, 5 to 8 in. FMG3102-PP-D
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period
of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period
to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s
customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components which wear are not warranted, including but not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it
will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT
OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity,
medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in
our basic WARRANTY / DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold
OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a
manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.
FOR WARRANTY RETURNS, please have the
following information available BEFORE
contacting OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specifi c problems relative
to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.
translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of
OMEGA ENGINEERING, INC.
FOR NON-WARRANTY REPAIRS,
current repair charges. Have the following information
available BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST of the
repair,
2. Model and serial number of the product, and
3. Repair instructions and/or specifi c problems relative
to the product.