Dwyer Instruments MFS2-3 Manuale utente

DWYER INSTRUMENTS, INC. | www.dwyer-inst.com314

Flow Transmitters,

Electromagnetic, In-Line FLOW

MAGNETIC INDUCTIVE FLOW SENSOR

No Moving Parts,Frequency and 4 to 20 mA Output,Maintenance-Free

1-5/32

[29.64]

1-1/8

[28.96]

31/32

[24.89]

3-7/32 [81.53]

5-19/32 [141.99]

3-1/32

[77.22]

15/32

[11.99]

LED

1˝ NPT

1-7/32

[31.04]

9/16

[13.95]

LED

15/32

[11.99]

1/2˝ NPT

19/32

[15.27]

1-1/32

[25.91]

2-1/4

[56.90]

1-7/32

[30.99]

3/8

[9.91]

3-1/32

[77.22]

3-7/32 [81.53]

5-1/16 [128.81]

1-3/8

[34.80]

Ø-11/16

[17.60]

2-1/4

[56.90]

The SERIES MFS & MFS2 Electromagnetic Flow Transmitters is a compact, 316

SS body, in line owmeter with pulse and optional analog 4 to 20 mA output. It is

available in a variety of ow ranges from 0.25 to 52.8 GPM (1 to 200 LPM) and process

connection sizes of 1/2˝ and 1˝ NPT.

FEATURES/BENEFITS

• Long life cycle with no moving parts to wear or break

• Can be applied in applications dealing with contaminated media with no mechanical

component in the ow

• Obstruction free pipe cross-section yields low pressure drop

• Unaffected by change in temperature, density, viscosity or concentration

APPLICATIONS

• Contaminated liquid ow monitoring

• Flow of conductive liquids

• Water & wastewater treatment

• Industrial systems

• Irrigation applications

SPECIFICATIONS

Service: Compatible, non-coating,

conductive liquids.

Range: See model chart.

Wetted Materials: Electrodes: 316 SS;

Process connections: MFS: 316 SS;

MFS2: PVDF; Measuring pipe: MFS:

PEEK-GF30; Gasket: EPDM.

Accuracy: MFS: ±2% of reading; MFS2:

±1% or reading.

Repeatability: 1%.

Temperature Limits: MFS: Process:

32 to 194°F (0 to 90°C); Ambient: 41 to

158°F (5 to 70°C); MFS2: Process: 14

to 140°F (-10 to 60°C); Ambient: 41 to

140°F (5 to 60°C).

Pressure Limits: MFS: 232 psi (16 bar);

MFS2: 145 psi (10 bar) @ 68°F (20°C);

116 psi (8 bar) @ 104°F (40°C); 87 psi (6

bar) @ 140°F (60°C).

Response Time: MFS: < 500 ms;

MFS2:< 100 ms.

Power Requirements: 24 VDC ±10%.

Power Consumption: 0.6 W.

Output: Frequency: Square-wave, NPN

or PNP; Analog: 4 to 20 mA.

Loop Resistance: 250 Ω.

Current Consumption: Max 80 mA.

Minimum Conductivity of Medium: 50

µS/cm.

Flow Indication: LED green, ow

proportional blinking.

Enclosure Rating: NEMA 4 (IP65).

Process Connection: See model chart.

Electrical Connection: Plug connector

M12x1.

Weight: MFS-1X: 1.5 lb (0.68 kg); MFS-

2X: 1.7 lb (0.77 kg); MFS-3X: 1.9 lb (0.87

kg); MFS2-1, -2, -3, -4, -5: 8 oz (226.8

g); MFS2-6: 1 lb (0.45 kg).

MFS-31 & MFS-32 MFS-11 & MFS-12

MFS-21 & MFS-22

17/64

[6.76]

1-9/64

[29.02]

2 x L2

M12 X 1

2 X D1

1-3/4

[44.53]

L1 2 X D2

[HOLE DIA.]

45/64

[18.01]

17/64

[6.76]

1-9/32

[32.52] 1-3/16

[30.02]

2-23/64

[60.05]

2-13/32

[61.05]

2 X D1

2 x L2

M12 X

2 X D2

[HOLE DIA.]

MFS2-6 MFS2-1/5

4-Pin Plug

Connector

4-Pin Plug

Connector

Model L1 L2 D1 D2

MFS2-1

MFS2-2

MFS2-3

MFS2-4

MFS2-5

MFS2-6

4˝

4.02˝

4.41˝

4.81˝

0.86˝

1.04˝

1.13˝

1/2-14˝ NPT

3/4-14˝ NPT

1-11.5˝ NPT

1-1/4-11.5˝ NPT

0.31˝

0.55˝

0.71˝

0.98˝

MFS

SERIES MFS & MFS2

MFS-X 4 Pin Cable

MODEL CHART

Model Range GPM (LPM)

Minimum Output

Signal GPM (LPM)

Process

Connection Output

MFS-11

MFS-21

MFS-31

MFS-12

0.25 to 5.3 (1 to 20)

0.5 to 10.5 (2 to 40)

2.5 to 52.8 (10 to 200)

0.25 to 5.3 (1 to 20)

0.13 (0.5)

0.25 (1)

1.3 (5)

0.13 (0.5)

1/2˝ NPT

1˝ NPT

1/2˝ NPT

Frequency

Frequency & analog

ACCESSORIES

Model Description

MFS-C3

MFS-C5

MFS-C10

4 pin cable socket M12x1 connect, 9.8 ft (3 m)

4 pin cable socket M12x1 connect, 16.4 ft (5 m)

4 pin cable socket M12x1 connect, 32.8 ft (10 m)

MODEL CHART

Model Range GPM (LPM)

Process

Connection Output

MFS2-1

MFS2-2

MFS2-3

MFS2-4

MFS2-5

MFS2-6

0.07 to 1.3 (0.25 to 5)

0.26 to 5.3 (1.0 to 20)

0.66 to 13.2 (2.5 to 50)

1.3 to 26.4 (5.0 to 100)

2.6 to 52.8 (10 to 200)

3.3 to 66.0 (12.5 to 250)

1/2˝ male NPT

3/4˝ male NPT

1˝ male NPT

1-1/4˝ male NPT

Frequency

Series MFS

Magnetic Inductive Flow Sensor

Series MFS

- 2 - Dwyer_MFS_us •03/2016

Table of contents page

0About this operating manual......................................................................................3

1Device description..................................................................................................... 4

1.1 Delivery, unpacking and accessories......................................................................4

1.2 Intended use ...........................................................................................................5

1.3 Exclusion of liability.................................................................................................5

2Safety instructions.....................................................................................................6

3Construction and function..........................................................................................7

4Installation of MFS ....................................................................................................8

4.1 Installation instructions............................................................................................ 8

4.2 Mounting .................................................................................................................9

5Electrical connection ............................................................................................... 10

5.1 Wirings .................................................................................................................. 11

6Commissioning and measuring mode ..................................................................... 12

6.1 Commissioning ..................................................................................................... 12

6.2 Switching on and off.............................................................................................. 12

6.3 Measuring mode ................................................................................................... 12

7Maintenance and cleaning ...................................................................................... 14

7.1 Return shipment to the manufacturer.................................................................... 14

8Disassembly and disposal....................................................................................... 15

9Technical data......................................................................................................... 16

9.1 Characteristics MFS.............................................................................................. 16

9.2 Materials table....................................................................................................... 17

9.3 Pressure drop ....................................................................................................... 17

9.4 Temperature limits ................................................................................................ 18

9.5 Dimensions ........................................................................................................... 19

The reproduction, distribution and utilization of this operating manual as well as the communication

of its contents to others without express authorization is

prohibited. Offenders will be held liable for

sign.

Series MFS About this operating manual

Technical changes reserved - 3 -

0 About this operating manual

•The operating manual is aimed at specialists and semi-skilled personnel.

•Before each step, read through the relevant advice carefully and keep to the specified

order.

•Thoroughly read and understand the information in the section "Safety instructions".

If you have any problems or questions, please contact your supplier or contact us directly

at:

Dwyer INSTRUMENTS, INC.

P.O. Box 373 • Michigan City

INIDANA 46361, U.S.A.

Phone: (219) 879 - 8000

Fax: (219) 872 - 9057

Email: info@dwyer-inst.com

Hazard signs and other symbols used:

WARNING! / CAUTION! Risk of injury!

This sign indicates dangers that cause personal injuries that can lead to health defects or

cause considerable damage to property.

CAUTION! Electric current!

This sign indicates dangers which could arise from handling of electric current.

CAUTION! Material damage!

This sign indicates actions which could lead to possible damage to material or environmental

damage.

ADHERE TO OPERATING MANUAL!

NOTICE!

This symbol indicates important notices,

tips or information.

NO DOMESTIC WASTE!

The device must not be disposed of to-

gether with domestic waste.

Pay attention to and comply with infor-

mation that is marked with this symbol.

Follow the specified instructions and steps.

Adhere to the given order.

Check the specified points or notices.

Reference to another section, document or

source.

•Item.

Device description Series MFS

- 4 - Dwyer_MFS_us •03/2016

1 Device description

The sensor of the MFS series from Dwyer, is a non-contact flow sensor. The measurement is

performed using magnetic induction and works without any moving parts.

The MFS is used for measuring or metering water and aqueous solutions. The compact de-

sign and independence from the intake and discharge sections allows the MFS to be used

under a variety of conditions.

Versions

∗

The MFS is available with inner diameters 0.39 in narrows

to 0.16 in, 0.39 in and 0.79 in.

The versions can be configured differently (MFS data

sheet).

Type plate:

The type plate sticker is located at the bottom side of the

MFS.

It contains the most important data, the connection diagram

and the arrow for the flow direction (Example Fig.).

1.1 Delivery, unpacking and accessories

All units have been carefully checked for their operational reliability before shipment.

Immediately after receipt, please check the outer packaging for damages or any signs of

improper handling.

Report any possible damages to the forwarder and your responsible sales representa-

tive. In such a case, state a description of the defect, the type and the serial number of

the device.

Report any in-transit damage immediately. Damage reported at a later date shall not be

recognized.

Unpacking:

Carefully unpack the unit to prevent any damage.

Check the completeness of the delivery based on the delivery note.

Scope of delivery:

1x MFS as ordered.

1x Operating manual.

1x Packing.

∗Customised versions available on request.

Series MFS Device description

Technical changes reserved - 5 -

IMPORTANT!

Use the type plate to check if the delivered unit corresponds to your order.

In particular, for devices with electrical components, check to see if the correct power

supply voltage is specified.

Accessories:

Connection cable with molded M12x1 coupling

socket.

M12x1 coupling socket as component.

1.2 Intended use

The magnetic inductive flow sensor MFS must only be used for measuring and metering liq-

uids with a minimum conductivity of 50 μS/cm.

WARNING! No safety component!

The magnetic inductive flow sensor of the series MFS is not safety components in ac-

cordance with Directive 2006-42-EC (Machine Directive).

Never use the MFS as a safety component.

The operational safety of the device supplied is only guaranteed by intended use. The speci-

fied limits (§ 9 "Technical data") may under no circumstances be exceeded.

Before installing the device, check that the wetted materials of the device are compatible with

the media being used (§ 9.2 "Materials table").

Measuring tube empty (or partially filled). / Conductivity too low.

The green LED may blink irregularly if the measuring tube of the MFS is empty or partial-

ly filled or if the conductivity of the fluid being used is too low. Random impulses will be

present at the output, but they do not represent an actual flow.

Ensure that the measuring tube of the MFS is always completely filled (§ 4.1

"Installation instructions").

Ensure that the conductivity of the fluid is at least 50 μS/cm.

1.3 Exclusion of liability

We accept no liability for any damage or malfunctions resulting from incorrect installation, in-

appropriate use of the device or failure to follow the instructions in this operating manual.

Safety instructions Series MFS

- 6 - Dwyer_MFS_us •03/2016

2 Safety instructions

Before you install the MFS, read through this operating manual carefully. If the instructions

contained within it are not followed, in particular the safety guidelines, this could result in

danger for people, the environment, and the device and the system it is connected to.

The MFS correspond to the state-of-the-art technology. This concerns the accuracy, the op-

erating mode and the safe operation of the device.

In order to guarantee that the device operates safely, the operator must act competently and

be conscious of safety issues.

Dwyer provides support for the use of its products either personally or via relevant literature.

The customer verifies that our product is fit for purpose based on our technical information.

The customer performs customer- and application-specific tests to ensure that the product is

suitable for the intended use. With this verification all hazards and risks are transferred to our

customers; our warranty is not valid.

Qualified personnel:

The personnel who are charged for the installation, operation and maintenance of the

MFS must hold a relevant qualification. This can be based on training or relevant tuition.

The personnel must be aware of this operating manual and have access to it at all times.

The electrical connection should only be carried out by a fully qualified electrician.

General safety instructions:

In all work, the existing national regulations for accident prevention and safety in the

workplace must be complied with. Any internal regulations of the operator must also be

complied with, even if these are not mentioned in this manual.

Degree of protection according to EN 60529:

Please ensure that the ambient conditions at the site of use does not exceed the require-

ments for the stated protection rating (§ 9 "Technical data").

Prevent freezing of the medium in the device with appropriate measures.

Only use the MFS if it is in perfect condition. Damaged or faulty devices must be checked

without delay and, if necessary, replaced.

When fitting, connecting and removing the MFS use only suitable appropriate tools.

Do not remove or obliterate type plates or other markings on the device, as otherwise the

warranty is rendered null and void.

Special safety instructions:

Warnings that are specifically relevant to individual operating procedures or activities can be

found at the beginning of the relevant sections of this operating manual.

Series MFS Construction and function

Technical changes reserved - 7 -

3 Construction and function

Components:

Housing:

The housing consists of aluminum die cast-

ing and has the IP65 degree of protection.

Electrical connection:

The electrical connection is made via 4(5)-

pin plug M12x1.

Operation / flow indicator LED.

Process connection:

The process connections are available in dif-

ferent sizes.

Type plate (sticker).

Construction:

The measuring tube with its earthing sleeves and electrodes passes

through the housing and forms the external process connection of the

MFS.

A magnetic field for the measurement process is generated inside the

sensor housing, which also contains the sensor and signal condition-

ing circuitry.

The two stainless steel electrodes are located in the middle of the

measuring tube between the earthing sleeves.

The MFS does not need any moving parts to make measurements. The inside of the measur-

ing tube is completely open, allowing the fluid to flow unhindered through the measuring tube.

Function:

The magnetic inductive flow sensor operates in accordance with the principle of induction, i.e.

a DC voltage is generated by the movement of a conductor in a magnetic field:

The measuring tube of the MFS is located in a magnet-

ic field (B).

An electrically conductive liquid (Q) flows through the

measuring tube. The positive and negative charge car-

riers are deflected in opposite directions.

A voltage perpendicular to the magnet field is generat-

ed and picked up by the two electrodes.

The resulting induced voltage is proportional to the

mean flow velocity of the liquid.

The electronics of the MFS converts the induced volt-

age to a flow-proportional frequency signal.

Installation of MFS Series MFS

- 8 - Dwyer_MFS_us •03/2016

4 Installation of MFS

Before installing, check that

the wetted materials of the device are suitable for the liquid being used (§ 9.2

"Materials table").

the equipment is switched off and is in a safe and de-energized state.

the equipment is depressurized and has cooled down.

SUITABLE TOOLS:

Use only suitable tools of the correct size.

4.1 Installation instructions

CAUTION! Risk of malfunction due to external magnetic

fields!

Magnetic fields close to the device can cause malfunctions and

should be avoided.

Ensure that no external magnetic fields are present at the in-

stallation site of the MFS.

•The MFS can always be installed anywhere along the pipeline. Straight sections of piping

are preferable, however.

Series MFS Installation of MFS

Technical changes reserved - 9 -

•Installation can occur in horizontal and vertical pipes. The flow sensor is only suitable for

application in completely filled pipe systems.

•As a matter of principle magnetic inductive flow sensors are widely independent from the

flow profile. An inlet section is not absolutely necessary.

To reach a most highly accuracy of the measurement, you should use straight inlet and

outlet sections according to the inner diameter. The inlet section has to be at least

10 x inner diameter; the outlet section 5 x inner diameter in order to achieve the specified

accuracy.

•The inlet and outlet sections and gaskets must have the same or a slightly larger inside

diameter than the measuring tube in order to achieve the specified accuracy.

4.2 Mounting

The MFS is installed directly into the pipeline. The compact design and light weight of the unit

make wall-mounting unnecessary.

IMPORTANT NOTICES:

•Observe the flow direction indicated on the MFS.

•Observe the mounting dimensions (§ 9.5 "Dimensions").

Select an appropriate location for installation (§ 4.1

"Installation instructions").

To ensure the best possible measuring accuracy, a vertical

installation position with increasing flow is preferable (no col-

lecting of dirt deposits).

Wrap the MFS connections with 1 to 2 wraps of thread tape

(e.g. Teflon®tape).

Wrap tape in a clockwise direction, viewed form the end, leav-

ing the first two threads uncovered.

Make sure the tape does not intrude into the flow path.

Attach the MFS with arrow pointed in the direction of flow.

The fittings should be screwed into MFS hand tight.

CAUTION! Material damage!

Pay attention to maximum torque.

While tightening, counter the union nut on the hexagon of the

process connection!

If you do not counter it, the MFS can be damaged!

Maximum Torque

MFS-1X •½''

MFS-2X •½'' • ¾"

MFS-3X •1''

15 Nm

30 Nm

Use two wrenches to tighten the MFS an additional ¾ to

1 turn.

When tightening, use a wrench (AF 1.063 or AF 1.338) to counter the process connection

on the hexagon (flange) in place.

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