Seametrics EX11 Series Manual de usuario

PROUDLY

MADE

IN THE

USA

ISO

9001:2008

EX100/200 Series

Insertion Magnetic Flow Meter

Instructions

EX11x

EX21x

EX15x

EX25x

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 2 seametrics.com

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

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

Warranty

Seametrics Limited Warranty ..................................................................................................................................Page 18

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 3 seametrics.com

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

GENERAL INFORMATION

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 (available as wall-mounted unit

only).

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.

Cover or Electronics Module

Powder-Coated Cast

Aluminum Housing

Sensor Housing

3/4” tubing, low insertion force

(Typically no tool required)

Adapter mates with threaded tting

FNPT 1 1/2” FNPT 2”

Compression Nut for easy

adjustment, secure locking

Cable Gland Strain Relief

Electrodes and Cap

Housing Screw

(connect one to ground)

Cable Gland Strain Relief

Valve Assembly for hot-

tap installation

2” Adapter (removes to

mount hot-tap machine)

Locking Collar

EX11x/21x

EX15x/25x

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 4 seametrics.com

GENERAL INFORMATION

Specications*

*Specications subject to change • Please consult our website for current data (seametrics.com).

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

6 mA max, 30Vdc forward ow standard; reverse ow optional

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 =

500’ (150m). For other circumstances, contact the factory.

Regulatory Mark (full power only)

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 5 seametrics.com

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).

Distorted Flows

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.

Orienting the Meter

FLOW

Faster Flow

Causes Meter

To Read High

10X 5X

Distorted

Flow Prole

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.

INSTALLATION

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.

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.

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 6 seametrics.com

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.

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.

‘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.

If it is necessary to do the initial installation under pressure, any

standard hot tap drilling machine with 2” NPT adapter, such as a

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

follow). Be sure ow is in the direction of the arrow on the housing.

Fully tighten locking collar and compression nut.

INSTALLATION

Compression nut

Adapter mates with

FNPT threads

EX15x/25x Sensor

Removal

Compression

nut

2” adapter removes

to mount hot-tap

machine

Full-port 2” ball

valve allows sensor

removal

Mates with 2”

FNPT threads

Locking collar

EX11x/21x Installation

EX15x/25x Installation

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 7 seametrics.com

“D”

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.

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.

strain

relief FLOW

INSTALLATION

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.

Depth Setting

Proper Depth Setting

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 8 seametrics.com

Pipe Wall Thickness

INSTALLATION

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) 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

Stainless Steel

(40S) 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

Copper Tubing

(Type L) 0.090 0.100 0.140 0.200 0.250 0.280 -- -- -- -- -- -- --

Copper Tubing

(Type K) 0.109 0.134 0.192 0.271 0.338 0.405 -- -- -- -- -- -- --

Brass Pipe 0.219 0.250 0.250 0.312 0.365 0.375 -- -- -- -- -- -- --

Duct. Iron

(Class 52) 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

* Call factory for larger pipe sizes.

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 9 seametrics.com

INSTALLATION

Straight Pipe Recommendations (X = diameter)

5X10X

Reduced Pipe

Two Elbows In Plane

Two Elbows, Out Of Plane

Expanded Pipe

Swirling Flow

Propeller Meter

Partially Open

Buttery Valve

Spiral Flow

20X

30X

20X

5X10X

EX100/200 SERIES INSTRUCTIONS

Seametrics • 253.872.0284 Page 10 seametrics.com

INSTALLATION

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.

Full Pipe Recommendations

Better InstallationPossible Problem

Air can be trapped Allows air to bleed off

Better InstallationPossible Problem

Allows air pockets to form at sensor Ensures full pipe

Post-valve cavitation can create air pocket Keeps pipe full at sensor

Better InstallationPossible Problem

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