Kofloc FML-500 Manual de usuario

MJ400252C1

Straight Type Ultrasonic Flow Meter

FML-500

Instruction Manual

MJ400252C1

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Please read this manual thoroughly prior to installing and using the product.

This way it is possible to ensure the performance and safety of the product and

prevent possible accidents and damage to the product due to incorrect use.

When the product has failed or is considered to require readjustment, please

contact our sales office. Our experienced technical staff will give you appropriate

advice. Please follow the instructions given.

Please note that if you repair/modify the product yourself, not only serious

accidents may occur, but our warranty will become void.

The contents of the manual are subject to change without notice for

improvement. Prior to shipment, every care has been taken in preparing this

manual not to mention the product itself, but if you notice any imperfections,

errors or omission, please contact KOFLOC.

<< Prior to use >> and << Precautions for use >>

Various alert symbols and signal words are used in this manual and attached to the

product to ensure correct use of the product and to prevent possible personal injury

or loss of life and property damage. The symbols and meanings of the signal words

are as follows:

Ignoring this symbol and handling the product

incorrectly will immediately result in loss of life or

serious injury.

Ignoring this symbol and handling the product

incorrectly may result in loss of life or serious

injury.

Ignoring this symbol and handling the product

incorrectly may result in personal injury or damage

to property.

DANGER

WARNING

CAUTION

MJ400252C1

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Table of Contents

1. Foreword 3

2. Precautions for Handling

2-1 Checking the ID plate 3

2-2 Precautions for transportation 3

2-3 Precautions for storage of the product 3

3. Overview 4

4. Specifications 5

5. Installation

5-1 Installation place 7

5-2 Installation method 7

5-3 Precautions for piping 7

6. How to Use

6-1 Warming up 9

6-2 Operating procedure 9

6-3 Description of the indicator 10

6-4 Zero adjustment 11

6-5 Flow rate indication 11

6-6 Re-measure mode 11

6-7 Auto AVR function 11

6-8 Parameter setting 12

7. Troubleshooting 16

8. Warranty 17

MJ400252C1

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1. Foreword

Thank you for your selection of the ultrasonic flow meter Model FML-500. Prior to

using your new equipment, please read this manual thoroughly to ensure it is used

in the correct way.

2. Precautions for Handling

2-1 Checking the ID plate

All the products have been assembled and adjusted one by one according to the

specifications, and liquids to use, flow rates and other data are shown on the ID plate

attached to the back of the case. Check the ID plate and make sure your new

equipment meets these specifications.

Check items:

①Model

②Name of fluid

③Flow rate

④Presence of the serial No.

2-2 Precautions for transportation

Wherever possible, transport the product in the condition in which it has been received from

KOFLOC to the installation site in order to prevent damage due to accidents during transportation.

2-3 Precautions for storage of the product

If the product is not put in use for a long time after it was received, unexpected troubles may

occur. When it is expected that the product will be kept in storage for a long time, take the

following precautions:

1) Store the product in the package in which it was received from KOFLOC, wherever possible.

2) Store the product in a place described below:

①A place free of rain and water.

②A place free of vibration and impact.

③A place of normal temperature and normal humidity (around 25℃, 65%).

④A place free of dust.

⑤A place free of corrosive gases.

⑥A place free of a strong electric/magnetic field.

3) To store the product that has been used, purge with pure water, etc. so that measuring

liquid will not remain in the flow meter.

Cover the inlet and outlet of the meter with caps to prevent intrusion of dust and dirt.

MJ400252C1

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3. Overview

Model FML-500 is a straight type ultrasonic flow meter for liquid.

The areas in contact with liquid are made of New PFA, which is highly resistant to chemicals,

and the passage is a simple straight construction having no obstacles inside to facilitate

maintenance.

The indicator-integrated meter becomes ready for measurement once its cables are connected. It

is capable of measuring flow rates up to F.S. 5 L/min. precisely.

⚫Clean structure with areas in contact with liquid made of New PFA.

⚫Straight type passage to cause no unnecessary pressure loss and facilitate maintenance.

⚫Small size and light weight. Compact

⚫Meter equipped with an indicator can be made ready for measurement only by connecting it to

a 24 VDC power supply.

⚫Capable of measuring highly viscous fluid.

Principle of operation

A flow velocity is calculated by a difference in time between the arrival time of ultrasonic

vibrations sent in the direction of flow of fluid and the arrival time of ultrasonic vibrations sent

in the opposite direction of flow of fluid and then a flow rate of fluid is calculated by multiplying

the cross sectional area of the tube used by the flow velocity.

MJ400252C1

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4. Specifications

Standard specifications

Measuring fluids

Water, pure water (bubbles not included) *For other

liquids, please contact us.

Fluid sonic range

1300 m/s －1600 m/s

Fluid temperature range

15 －50℃

Measuring range

0 －5 L/min

Measuring accuracy

See Table 1.

Materials of parts in

contact with liquid

New PFA

Pressure resistance

0.5 MPa（at 20℃）

Process connection

6-mm tube end

Cable length

3 m

Cable sheath

PVC

Enclosure

Equivalent to IP64

Ambient temperature

5 －50℃（No condensation）

Ambient humidity

10 －85%RH max. (No condensation)

Installation

Vertical, horizontal, inclined

Table 1: Measuring accuracy (water 23℃)

Measuring range

0 －5 L/min

Flow range

0 –0.20 L/min －0 –5.00 L/min

Measuring

accuracy

Flow

velocity

Below 1 m/s (below 0.8 L/min）

±30 mL/min

1 －2 m/s（0.8 －1.5 L/min）

±2.5%F.S

2 －3 m/s（1.5 －2.2 L/min）

±2.0%F.S

3 －6.6 m/s（2.3 －5 L/min）

±1.5%F.S

Electrical specifications

Measuring method

Ultrasonic wave propagation time difference calculation

Output

Flow output

4 –20 mA（Load resistance 500 Ωmax.）

Flow alarm

output

Open collector output 2 points

Load rating: 30 VDC, 20 mA, operation: comparison

Indicator

4-digit, 7-segment LEDs

Indication

Instantaneous flow rate, integrated flow rate

Alarm output monitor

LED 2-point indication (Instantaneous flow rate alarm,

integrated flow rate alarm)

Parameter setting

Four key switches on the panel

Power supply

24 VDC±5%

Power consumption

150 mA max.

MJ400252C1

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External dimensions

Signal table

Pin No.

Signal Name

Core Color

Power supply +24V

Red

Power supply/current

output COM

Black

Current output

White

Alarm output 1

Green

Alarm output 2

Yellow

Alarm COM

Brown

MJ400252C1

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5. Installation

5-1 Installation place

①This equipment is designed for indoor use.

Never install the equipment in a place where it is likely to be wetted by water or rain. The

equipment may fail. Install the equipment in a place where sufficient ventilation is provided

and changes in temperature and humidity are minimal.

②Install the equipment in a place free of vibration and impact.

③Do not use the equipment under direct sunlight or at high temperature/humidity.

④Install the equipment in a place free of dust.

⑤Install the equipment in a place free of corrosive gases.

⑥Install the equipment in a place free of a strong electric/magnetic field.

⑦After installation, be sure to conduct leak test on piping.

⑧Install the equipment in a place where the operating temperature is 15 to 35℃.

The use of the equipment in a condition deviating from the conditions described in the

specifications is a cause of failure.

5-2 Installation method

Install the meter using the threaded holes (M3) on the bottom of the body.

Bottom of body

5-3 Precautions for piping

①The measuring tube must be filled with measuring fluid.

②Avoid such piping as fluid flows downward.

Bubbles in the measuring tube are a cause of deterioration of the accuracy.

③Be sure that the length of piping in the upstream is longer than 10D and the length of piping

in the downstream longer than 5D.

④Be sure that the flow direction matches the arrow shown on the body.

⑤When a flow rate adjust valve is to be installed, it is recommended that it be installed on the

secondary side of the meter.

If it is installed in the upstream, bubbles may be produced due to pressure drop to cause

deterioration of the accuracy.

⑥For connecting tube joints, follow the procedures furnished by the manufacturer.

During connection, hold the tubes to prevent breakage.

MJ400252C1

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When washing the inside of piping of the product, exercise caution not to

damage the inside. If it is damaged, the accuracy will deteriorate.

Check to see if the connections of piping are not leaking. If such a

check is omitted and unsafe liquid is used, serious accidents may occur.

CAUTION

WARNING

MJ400252C1

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6. How to Use

6-1 Warming up

Warm up the equipment for at least 15 minutes after it was powered on.

6-2 Operating procedure

・Operation panel

・Indicator

Indicates an instantaneous flow rate or integrated flow rate.

During setting, the mode No. or set value is shown here.

・Alarm lamps

When the alarm output 1 is on, “AL1”lights and when the alarm output 2 is on, “AL2”lights.

・Indicator lamps

When an instantaneous flow rate is being indicated, “IF”lights and when an integrated flow

rate is being indicated, “TF”lights.

・Shift key [＜]

Measurement: Switches over the indication of flow rates between the instantaneous flow rate

and the integrated flow rate.

Setting: Moves the flashing digit to left.

Returns to the flow rate indication when the mode No. is being indicated.

・Up key [∧]

Measurement: Not used.

Setting: Increments the value of the flashing digit.

・Down key [∨]

Measurement: Not used.

Setting: Decrements the value of the flashing digit.

・ENT key

Measurement: Not used.

Setting: Accepts an entered value.

ENT key

Up key

Shift key

Indicator

Down key

Alarm

lamps

Indicator

lamps

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