Seametrics EX100 Operating Manual

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EX100/200 Series
Insertion Magnetic Flow Meter
Instructions
EX11x EX21x
EX15x EX25x
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TABLE OF CONTENTS
General Information
General Information ...................................................................................................................................................Page 3
Features ...........................................................................................................................................................................Page 3
Specications ................................................................................................................................................................Page 4
Installation
Positioning the Meter ................................................................................................................................................Page 5
Immersion .......................................................................................................................................................................Page 5
Chemical Injection or Fertigation ..........................................................................................................................Page 5
EX11x/21x Installation ................................................................................................................................................Page 6
EX15x/25x Installation ................................................................................................................................................Page 6
Depth Setting ................................................................................................................................................................Page 7
Pipe Wall Thickness .....................................................................................................................................................Page 8
Straight Pipe Recommendations ...........................................................................................................................Page 9
Full Pipe Recommendations ....................................................................................................................................Page 10
Electrical Connections
General Electrical Guidelines ...................................................................................................................................Page 11
Power ................................................................................................................................................................................Page 11
Output ..............................................................................................................................................................................Page 11
Grounding Guidelines ................................................................................................................................................Page 11
Connection Diagrams
Counter or PLC ..............................................................................................................................................................Page 12
A055 4-20 mA Output ...............................................................................................................................................Page 12
FT520 Controller...........................................................................................................................................................Page 12
FT430/440 Display & Proportional Feed ............................................................................................................Page 13
FT440 & 4-20 mA Output ........................................................................................................................................Page 13
Dual FT430/440 Displays ..........................................................................................................................................Page 13
DL76 Data Logger .......................................................................................................................................................Page 14
FT440/DL76 ....................................................................................................................................................................Page 14
EX100/200 SERIES INSTRUCTIONS
Operation & Maintenance
Zero Adjustment ..........................................................................................................................................................Page 15
Minimum Flow ..............................................................................................................................................................Page 15
Filtering ............................................................................................................................................................................Page 15
Electrode Coating ........................................................................................................................................................Page 15
Calibration (“K-Factor”) .............................................................................................................................................Page 15
Flow Rates in Gallons Per Minute ..........................................................................................................................Page 15
Parts List ..........................................................................................................................................................................Page 16
Troubleshooting
Problems .........................................................................................................................................................................Page 17
Probable Causes ...........................................................................................................................................................Page 17
Things to Try ..................................................................................................................................................................Page 17
Seametrics • 253.872.0284 Page 2 seametrics.com
GENERAL INFORMATION
EX100/200 SERIES INSTRUCTIONS
The EX100/200-Series are adjustable depth insertion
magmeters that t 3” to 48” pipe (up to 72” optional). The
complete lack of moving parts of the EX100/200-Series is the source of its reliability. Brass and stainless steel models withstand a variety of temperature, pressure, and chemical conditions. The EX-Series has no rotor to stop turning in dirty water and there are no bearings to wear out. Like all magmeters, when used in chemical injection applications, these meters should be installed upstream of the chemical line (or far enough downstream to allow complete mixing
of uids before the meter). Adapters mate with standard 1-1/2” (11x/21x) or 2” (15x/25x) FNPT threaded ttings
such as saddles and weldolets which may be purchased either locally or from Seametrics.
A rapidly reversing magnetic eld is produced in the lower housing. As the uid moves through this eld, a voltage is
generated that is measured and translated into a frequency
signal proportional to ow rate. This square wave signal
can be sent directly to a PLC or other control or can be
Features
converted using any of the Seametrics family of indicators and converters.
A modular system of electronics can be installed directly
on the ow sensor or mounted remotely. The FT430
(externally powered with pulse) and the FT440 (loop powered), both provide digital rate and total displays, as well as a programmable pulse; the FT440 also provides a 4-20 mA analog output. The AO55 is a blind analog (4-20 mA) transmitter. Programmable pulse for pump pacing is available with the PD10.
The “hot-tap” models (EX15x/25x) can be installed or serviced without shutting down the line by means of a 2” full-port isolation valve that comes with a nipple
for installation on the pipe tting; a bronze ball valve is
standard, with a 316 stainless steel valve option if needed. In most circumstances, no special tool is required.
Reverse ow output and immersibility are optional.
EX11x/21x
Housing Screw
(connect one to ground)
Cover or Electronics Module
Powder-Coated Cast
Aluminum Housing
Cable Gland Strain Relief
Compression Nut for easy
adjustment, secure locking
Adapter mates with threaded tting
FNPT 1 1/2” FNPT 2”
3/4” tubing, low insertion force
(Typically no tool required)
Sensor Housing
Electrodes and Cap
Cable Gland Strain Relief
Locking Collar
2” Adapter (removes to mount hot-tap machine)
Valve Assembly for hot­tap installation
EX15x/25x
Seametrics • 253.872.0284 Page 3 seametrics.com
GENERAL INFORMATION
EX100/200 SERIES INSTRUCTIONS
Specications*
Pipe Size 3” to 48” (up to 72” optional)
Power Full Power: 12 - 24 Vdc, 250mA Low Power: 12 - 24 Vdc, 40mA average with 250mA peaks
Materials Housing Powder-coated cast aluminum
Tubing/Fitting/Sensor Housing Brass or 316 Stainless Steel
Electrodes Hastelloy
Electrode Cap PVDF
O-Ring (15x/25x only) EPDM
Valve Assembly (15x/25x only) Bronze (stainless optional) with bronze ball valve
Fitting Size Required 11x/21x: 1.5” FNPT 15x/25x: 2” FNPT
Maximum Pressure 200 psi (14 bar)
Temperature Ambient 0˚ to 160˚ F (-17˚ to 72˚ C)
Fluid 32˚ to 200˚ F (0˚ to 93˚ C)
Minimum Conductivity 20 microSiemens/cm
Flow Velocity 0.28 - 20 ft/sec (0.08 - 6.09 m/sec)
Accuracy ± 1% of full scale
Output Square wave pulse, opto-isolated, 500 Hz @ 20 ft/sec
Empty Pipe Detection Software, defaults to zero ow
Cable Standard 18’ (6m), #22 shielded twisted pair, 4-conn. Max. cable run at 24 Vdc = 1000’ (300m); at 12 Vdc =
Regulatory
6 mA max, 30Vdc forward ow standard; reverse ow optional
500’ (150m). For other circumstances, contact the factory.
Mark (full power only)
*Specications subject to change • Please consult our website for current data (seametrics.com).
Seametrics • 253.872.0284 Page 4 seametrics.com
INSTALLATION
EX100/200 SERIES INSTRUCTIONS
Positioning the Meter
For best results, the EX100/200 sensor should be installed with at least ten diameters of straight pipe
upstream and ve downstream. Certain extreme situations such as partially-opened valves are particularly difcult and
may require more straight diameters upstream (see page 9 for straight pipe recommendations).
Faster Flow Causes Meter
Distorted
Flow Prole
To Read High
FLOW
10X 5X
Distorted Flows
Immersion
The 100/200-Series sensors are not designed for underwater operation. Even occasional immersion can cause damage.
If occasional immersion, such as when a vault oods, then
the -40 option, (immersion) is recommended.
Chemical Injection or Fertigation
When a magmeter is used in a chemical injection application (including fertigation), the chemical line must be placed downstream of the magmeter OR far enough upstream
for complete mixing to occur before the uid reaches the meter. When unmixed chemical or fertilizer alternates
with water passing through the meter, the rapid changes in conductivity may cause sudden spikes and drops in the meter’s reading, resulting in inaccurate measurement. The
magmeter will restabilize, however, with a steady ow of uid of uniform conductivity.
Caution: In chemical injection or fertigation applications, install chemical line downstream of magmeter, or far enough upstream to allow complete mixing of uids before the meter.
Horizontal (3 o’clock or 9 o’clock position) is the preferred installation orientation, since it improves low-ow
performance and avoids problems with trapped air and sediment. (See Orienting the Meter diagram below.) Bottom (6 o’clock), top (12 o’clock), and vertical pipe installations are all acceptable if required by the piping layout.
Fair
Unacceptable if pipe contains air
Best Position
Fair
Unacceptable if pipe contains sediment
Caution: These ow sensors are not recommended for installation downstream of a boiler feedwater pump
where installation fault may expose the ow sensor to boiler pressure and temperature. Maximum recommended temperature is 200°F.
Orienting the Meter
Seametrics • 253.872.0284 Page 5 seametrics.com
INSTALLATION
EX11x/21x Installation
Fitting Installation. EX11x/21x adapters mate with a 1-1/2” female
NPT pipe thread adapter tting. Any tting that provides the
matching NPT female thread may be used. Installation procedure
compensates for tting height differences. Cut a minimum 1-3/4”
hole in the pipe. If possible, measure the wall thickness and write
it down for use in depth setting. Then install the threaded tting
(saddle, weldolet, etc.) on the pipe.
EX100/200 SERIES INSTRUCTIONS
Compression nut
Meter Installation. Loosen the compression nut so that the adapter
slides freely. Pull the meter fully upward and nger-tighten the
compression nut. Using a thread sealant, install the adapter in the
pipe tting. Do not overtighten. Now loosen the compression nut,
lower the meter to the appropriate depth setting (see diagram and
instructions that follow). Be sure ow is in the direction of the arrow
on the housing. Fully tighten compression nut.
EX15x/25x Installation
‘Hot tap’ EX meters are designed so they can be installed and
serviced without depressurizing the pipe.
Fitting Installation. The EX15x/25x adapters mate with a 2” FNPT
threaded tting for compatibility with the 2” isolation valve. Any tting that provides matching NPT female thread may be used. The installation procedure compensates for differences in tting height.
If initial installation is performed on an unpressurized pipe, cut a
minimum 1-3/4” hole in the pipe. If possible, measure the wall thickness and write it down for use in depth setting. Then install the
threaded tting (saddle, weldolet, etc.) on the pipe.
Adapter mates with FNPT threads
Compression nut
Locking collar
2” adapter removes to mount hot-tap machine
Full-port 2” ball valve allows sensor removal
If it is necessary to do the initial installation under pressure, any standard hot tap drilling machine with 2” NPT adapter, such as a
Mates with 2” FNPT threads
Transmate or a Mueller, can be used. Ordinarily, it is not necessary to use an installation tool, due to the small diameter tube the meter can be installed by hand at all but the highest pressures.
Meter Installation. Remove the sensor unit from the valve assembly.
Using a thread sealant, install the valve assembly on the pipe tting.
If the initial installation is a pressure (“hot”) tap, remove the 1-1/2” x 2” adapter bushing at the back of the valve. Thread the tapping machine on, open the valve, and tap using a minimum of 1-3/4” or maximum 1-7/8” cutter. After retracting the machine and closing
the valve, reinstall the ow sensor. When the sensor is secure, open
the valve and adjust depth setting (see diagram and instructions that
EX15x/25x Sensor Removal
follow). Be sure ow is in the direction of the arrow on the housing.
Fully tighten locking collar and compression nut.
Seametrics • 253.872.0284 Page 6 seametrics.com
INSTALLATION
Depth Setting
It is important for accuracy that the sensor be inserted to the correct depth into the pipe.
1. Please visit seametrics.com and select the K-factor Calculator located at the bottom of the home page
to nd dimension D (insertion depth setting)*.
2. Measuring from the outside of the pipe to the joint in the housing, as shown in the diagram, adjust the sensor to Dimension D and hand-tighten compression nut.
3. Align the conduit housing with the centerline of the pipe, as shown. Be sure the arrow on the housing
points in the direction of ow.
EX100/200 SERIES INSTRUCTIONS
“D”
strain relief
FLOW
4. Check Dimension D one more time.
5. Fully tighten the compression nut.
Record your settings. Once you have the meter set up and operational, it is important to record you meter settings and save them future reference.
K-Factor ___________________________________
Insertion Depth (Dim. D) __________________
* For pipe sizes larger than 50”, please consult factory.
Proper Depth Setting
Caution! Never attempt to remove a ow sensor when there is pressure in the pipe unless it is specically designed for
hot tap installation and removal. Loosen the compression nut slowly to release any trapped pressure. If uid sprays out when removing the sensor, stop turning and depressurize the pipe. Failure to do so could result in the sensor being thrown from the pipe, resulting in damage or serious injury.
Seametrics • 253.872.0284 Page 7 seametrics.com
INSTALLATION
EX100/200 SERIES INSTRUCTIONS
Pipe Wall Thickness
Nominal Pipe Size*
3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30" 36"
Schedule 40 0.216 0.237 0.280 0.322 0.365 0.406 0.438 0.500 0.562 0.593 0.687 -- --
Schedule 80 0.300 0.337 0.432 0.500 0.593 0.687 0.750 0.843 0.937 1.031 1.218 -- --
Stainless Steel (10S)
Stainless Steel (40S)
Copper Tubing (Type L)
Copper Tubing (Type K)
Brass Pipe 0.219 0.250 0.250 0.312 0.365 0.375 -- -- -- -- -- -- --
Duct. Iron (Class 52)
* Call factory for larger pipe sizes.
0.120 0.120 0.134 0.148 0.165 0.180 0.188 0.188 0.188 0.218 0.250 0.312 0.312
0.216 0.237 0.280 0.322 0.365 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.375
0.090 0.100 0.140 0.200 0.250 0.280 -- -- -- -- -- -- --
0.109 0.134 0.192 0.271 0.338 0.405 -- -- -- -- -- -- --
0.280 0.290 0.310 0.330 0.350 0.370 0.390 0.400 0.410 0.420 0.440 0.470 0.530
Seametrics • 253.872.0284 Page 8 seametrics.com
INSTALLATION
Straight Pipe Recommendations (X = diameter)
Reduced Pipe
EX100/200 SERIES INSTRUCTIONS
5X10X
Two Elbows In Plane
Two Elbows, Out Of Plane
Expanded Pipe
20X
20X
5X10X
5X
5X
30X
Spiral Flow
Propeller Meter
20X
Swirling Flow
Partially Open
Buttery Valve
Seametrics • 253.872.0284 Page 9 seametrics.com
INSTALLATION
Full Pipe Recommendations
EX100/200 SERIES INSTRUCTIONS
Better InstallationPossible Problem
Allows air pockets to form at sensor
Ensures full pipe
Better InstallationPossible Problem
Post-valve cavitation can create air pocket Keeps pipe full at sensor
Better InstallationPossible Problem
Air can be trapped Allows air to bleed off
Caution: These ow sensors are not recommended for installation downstream of a boiler feedwater pump where installation fault may expose the ow sensor to boiler pressure and temperature. Maximum recommended temperature is 200°F.
Seametrics • 253.872.0284 Page 10 seametrics.com
ELECTRICAL CONNECTIONS
EX100/200 SERIES INSTRUCTIONS
General Electrical Guidelines
Whenever possible avoid running control cables in the same conduit with or bundled with AC power.
Using shielded cable, be sure to connect shield to ground at power supply end of the cable. Do not connect other end of shield.
Avoid routing ow sensor cables in close proximity to a variable frequency drive.
Recommended power and output wiring is shielded twisted pair 18-22 AWG control cable.
Recommended voltage is 12-24 Vdc. Note that unregulated power supplies can vary from nameplate voltage by a considerable amount, especially with AC
line voltage uctuation. Therefore 24V power supplies
must be regulated.
See the Connections diagrams on the following pages for the appropriate terminals.
Power
A 12 - 24 Vdc power supply capable of at least 250 mA current output is needed.
Output
The standard output is pulses with ow in the forward direction (Reverse ow output is optional [-15] ). Electrically
it is an open collector opto isolated switch. The output is not internally powered.
Grounding Guidelines:
For best results, use a good quality earth ground, such as metallic water piping or a driven ground, to ensure a good connection to earth ground and good noise suppression.
If the ow sensor is installed in metallic piping, for optimum
connection clamp wire to the piping a short distance to one
side of the ow sensor using an electrical grounding clamp.
Connect the wire to the earth ground and to one of the housing screws.
For Non-Metallic Pipe: Connect one to the housing screws by wire to a good earth ground, such as metalic water piping or a rod driven into the ground.
EX meters are usually unaffected by moderate levels of electrical noise. In some applications performance may be improved by taking the following steps:
Use shielded twisted pair cable (Belden 8723 or equivalent above ground or Alpha 35482 or equivalent burial).
Clamp a ferrite bead (Steward 28A2029-OAO or equivalent) on meter signal/power wire within 3/4” of the meter strain relief (tape or tie wrap in place if necessary). See diagram below.
IMPORTANT - Connect the cable shield ground wire to ground, ONLY at power supply end of cable.
Note: This output is limited to 6 mA at 30 Vdc maximum.
Housing Screw
Earth Ground
Caution: The EX100/200-Series have strong start and run currents. When using solar panels and VRSLA batteries as a
power source, use caution to insure the EX­series sensor has the -50 Low-power Option and that all Seametrics products on the power circuit receive sufcient voltage and current under all conditions. Failure to do so will lead to unreliable operation and possible damage to the unit/s. Please reference the technical bulletin, ‘Solar and Battery-Power Guildlines’ available on our website: www.seametrics. com
Seametrics • 253.872.0284 Page 11 seametrics.com
Place Ferrite Bead Here
Metallic Pipe
Grounding Clamp
CONNECTIONS DIAGRAMS
+ _
+
_
00
9
8
7
6
5
4
3
2
1
00
9
8
7
6
5
4
3
2
1
00
9
8
7
6
5
4
3
2
1
00
9
8
7
6
5
4
3
2
1
+
_
S
+ _
+
_
+
_
+
+ _
_
+
_
+
+ _
_
+ _
+
_
Counter or PLC
EX100/200 SERIES INSTRUCTIONS
EX-SERIES
See Dual FT430/440 Diagram for an example of bidirectional connections.
AO55 4-20 mA Output
Power
Forward Output
Reverse Output
(Option-15 only)
See Dual FT430/440 Diagram for an example of bidirectional connections.
Power
Forward Output (open collector)
Reverse Output
(Option -15 only)
24 Vdc Power
Red
EX-SERIES
+
Green
White
Black
12 - 24 Vdc
Counter or PLC
Max. 6 mA, 30 Vdc
Digital Input
Max. 6 mA 30 Vdc
AO55
24 Vdc Power
Frequency
Sensor
Black
Red
4-20 mA
4-20 mA
FT520 Controller
FT520
Pulse
Out
+12V
SEN1
G
SEN2
See Dual FT430/440 Diagram for an example of bidirectional connections.
Seametrics • 253.872.0284 Page 12 seametrics.com
24 Vdc Power
Black
Green
White
EX-SERIES
Red
Power
Forward Output
Reverse Output
+
(Option-15 only)
CONNECTIONS DIAGRAMS
+
+ _
_
+
_
+
_
+
_
+ _
+
_ S
+
_
+
_
+
_
Power
Pulse Out 2
Sensor
Input
Pulse Out 1
(Scaled)
(Scaled)
FT430/440 Display and Proportional Feed
_
EX-SERIES
Power
Forward Output
Reverse Output
(Option-15 only)
See Dual FT430/440 Diagram for an example of bidirectional connections.
FT440 DISPLAY AND 4-20 mA Output
+ _
+ _
+ _
Black
24 Vdc Power
Red
Green
White
EX100/200 SERIES INSTRUCTIONS
FT430/440
(430 = Pass-Thru
440 = Scaled)
_ +
_ +
Pulse Out 2
Pulse
Out 1
(Scaled)
To Proportional Feed Metering Pump
FT440
+
Power
_ +
_ S
+
Sensor
Input
EX SERIES
Power
Forward Output
Reverse Output
(Option-15 only)
See Dual FT430/440 Diagram for an example of bidirectional connections.
Red
Black
Black
24 Vdc Power
4-20 mA Device (e.g. pump, PLC)
24 Vdc Power
Green White
Black
Red
Dual FT430/440 Displays (Example of Bidirectional Connection)
Black
(Scaled)
Pulse Out 1
Sensor
Input
+
+ _
+
Pulse
Seametrics • 253.872.0284 Page 13 seametrics.com
Out 2
(430 = Pass-Thru
440 = Scaled)
_
S
_
+ _
Power
Red
EX-SERIES
Power
Forward Output
White
Green
Reverse Output
(Option-15 only)
24 Vdc Power
Black
Red
Green
White
Power
Sensor
Input
_ +
_ S
+
FT430/440FT430/440
(430 = Pass-Thru
440 = Scaled)
Pulse Out 2
_ +
_ +
Pulse Out 1
(Scaled)
CONNECTIONS DIAGRAMS
+
_
S
+
+ _
_
+ _
+
_
+
_ S
+
_
+
_
+
_
Power
Pulse Out 2
Sensor
Input
Pulse Out 1
(Scaled)
(430 = Pass-Thru
440 = Scaled)
DL76 Data Logger
EX100/200 SERIES INSTRUCTIONS
DL76
Power
Forward Output
Reverse Output
(Option-15 only)
See Dual FT430/440 Diagram for an example of bidirectional connections.
FT430/440 and DL76
EX-SERIES
Power
Forward Output
EX-SERIES
24 Vdc Power
Red Black
Green
White
Red
Black
12-24 Vdc
Power
Green
White
Sensor Input
DL76FT430/440*
Sensor Input
White
Green
Reverse Output
(Option-15 only)
See Dual 430/440 Diagram for an example of bidirectional connections.
* Note on FT440
The FT440 has Scaled Pulse Output only –
6.5 pulses/second maximum. Pulse Output 1 or Pulse Output 2 can be used with DL76.
Seametrics • 253.872.0284 Page 14 seametrics.com
OPERATION & MAINTENANCE
30Vdc
Max. 6mA
-+-
+
12-24Vdc
345621
Power
Forward
Output
Status LED
Zero
Adjust
Pins
EX100/200 SERIES INSTRUCTIONS
Zero Adjustment
When the EX100/200-Series meter is powered up and
there is no ow, there should be no output pulses (or, if connected to the FT430/440, ow rate should read “0”). If there are pulses, it may be necessary to adjust the ow meter under no-ow conditions after it has been installed.
This should only be done if the indicated ow is low, near the lower cutoff.
Status
LED
Zero
Adjust
Pins
Zero Adjustment
To perform the adjustment, after determining that there
is a full pipe with no ow, short between the two pins
marked “Zero Adjust”. A red LED light will come on for
approximately 50 seconds and then go out. The zero
adjustment is completed.
Minimum Flow
As with any other ow sensor, there is a rate below which
the EX100-Series sensor cannot read. Check the table
below for the minimum ow rate detectable by the sensor for a given pipe size.
Presence of Flow Indication. To assist in troubleshooting, the “Status LED” has two blinking modes in normal
operation. When there is no ow detectable by the meter
(below minimum threshold) the LED blinks every 8.0
seconds. When there is detectable ow, the same indicator
blinks every 3.0 seconds (Pulses are being output when indicator is blinking every 3 seconds).
Filtering
The software of the EX100/200-Series lters out electrical noise and averages sudden variations in the ow to smooth the output. It takes a matter of seconds for the ow sensor to get up to full output when it is powered up or when ow
begins.
Electrode Coating
Grease or other adhering, non-conductive materials can
stop ow detection if the electrodes become heavily
coated. To clean the electrodes, remove the sensor from the pipe and gently scrub the electrodes (three silver
bumps) on the reading face of the ow sensor. A mild soap
(dishwashing liquid for example) can be used to aid the cleaning process.
Calibration (“K-Factor”)
In order to properly process pulses from the ow sensor,
a number must be entered into the control to which the sensor is connected. This number, called the K-factor, is the number of pulses the sensor puts out per unit of
uid passing through the pipe. It is normally provided
for Seametrics sensors in pulses per gallon, and can be ascertained by using the “K-Factor Calculator” on the Seametrics website. These numbers are based on extensive testing, which has shown close agreement among different EX sensors in the same installation. Typically, most K-factor error can be attributed to installation variables, such as
depth setting and tting conguration.
Using the K-Factor Calculator:
Go to seametrics.com and select the K-factor Calculator
located at the bottom of the home page*.
1. Select your meter.
2. Choose units.
3. Input external pipe diameter (measure) and wall thickness (measure, or look-up in Pipe Wall Thickness table on page 8 of this manual).
4. Press Calculate to determine your K-factor. (NOTE: Dimension D is also calculated.)
5. Enter your K-factor into your controller.
*For pipe sizes larger than 50”, please consult factory.
Flow Rates (in gallons per minute)
Feet Per Second
Min
0.28
Max
20.0
3” 4” 6” 8” 10” 12” 14” 16” 18” 20” 24” 30” 36” 48”
6 11 25 44 69 99 134 175 222 274 395 617 888 1,580
440 783 1,762 3,133 4,895 7,050 9,596 12,533 15,863 19,584 28,200 44,064 63,452 112,804
Seametrics • 253.872.0284 Page 15 seametrics.com
Nominal Pipe Size
OPERATION & MAINTENANCE
EX100/200 SERIES INSTRUCTIONS
EX 11x/21x Parts
1a
2a
3a
9
10
11
12
13
4a
7a
White Housing 1a thru 7a
1 Upper housing/
electronics
2 Housing gasket/seal 102005 100411
3 Lower housing Not eld
4 Housing screw/washer
kit (4 each)
7 Strain relief kit, large
(includes 1)
9 Tube Not eld replaceable
10 Compression nut 100064 (brass)
11 Compression ferrule 100358
12 Adapter 100845 (brass)
13 Sensor assembly Not eld replaceable
Contact service representative
for your specic
model
replaceable
100414 100414
101850 101850
100084 (ss)
100846 (ss)
Blue Housing 1b thru 7b
Contact service representative
for your specic
model
Not eld
replaceable
Blue Housing
4b
1b
2b
7b
3b
Hot Tap
A
B
C
E
D
EX 15x/25x Parts (Hot Tap)
All parts are the same except those below, which replace #12
A Locking collar 100061 (brass)
B Adapter tting o-ring 100345 (EPDM)
C Adapter, hot tap 100384 (brass)
D Nipple, 2 inch 100066 (brass)
E Valve assembly
(includes valve plus B, C, & D above)
100116 (ss)
100385 (ss)
100103 (ss)
100069 (brass) 100119 (ss)
Seametrics • 253.872.0284 Page 16 seametrics.com
TROUBLESHOOTING
EX100/200 SERIES INSTRUCTIONS
Problem Probable Cause Try...
No pulse output Unit not grounded Connect to earth ground.
Below minimum ow cutoff Check the Presence of Flow LED (see
page 15).
Flow reversed Note ow direction arrow, reverse
direction to meter.
Output connections reversed Change output connections.
Pipe not full Check plumbing.
Excessive electrical noise Check for proper electrical wiring.
No power Check for power across power input
terminals.
Power reversed Reverse connections
Fluid conductivity <20 µS/cm Select another ow meter.
Output pulses incorrect Missing or incorrect ground wire Check for proper ground.
Incorrect depth setting Check depth setting (see page 7).
Fluid conductivity <20 µS/cm Select another ow meter.
Empty pipe Check for full pipe or install meter in
vertical position.
Not enough straight pipe Check for air pockets or turbulence.
Refer to Installation section earlier in this manual.
Excessive electrical noise Check for proper electrical wiring.
Jumpy readings Rapidly changing conductivity (in
chemical injection or fertigation applications).
Install chemical injection line downstream of magmeter (or far enough upstream to allow complete
mixing of uids before meter)
Seametrics • 253.872.0284 Page 17 seametrics.com
NOTES
EX100/200 SERIES INSTRUCTIONS
Seametrics • 253.872.0284 Page 18 seametrics.com
NOTES
EX100/200 SERIES INSTRUCTIONS
Seametrics • 253.872.0284 Page 19 seametrics.com
Seametrics • 19026 72nd Avenue South • Kent, Washington 98032 • USA
(P) 253.872.0284 • (F) 253.872.0285 • 1.800.975.8153 • seametrics.com
LT-65200196r2.0 20160830
8/30/16
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