Optex TC-Mi Manuel utilisateur

OPTEX CO., LTD.

5-8-12, Ogoto, Otsu, Shiga, 520-0101 Japan

Tel.+81-77-579-8680 Fax.+81-77-579-8199

https://www.optex.co.jp/e/products/environmental-sensor/

TC-Mi

Turbidity Checker

Thank you very much for purchasing Turbidity Checker TC-Mi.

All of this instruction manual must be read before operation of the

Turbidity Checker for safe and proper operation.

This instruction manual should be kept for future reference such as

maintenance.

2023.07 59-2568-2

Instruction

Manual

The instruction manual is also available on the following website.

https://navi.optex.net/manual/05297/?lang=en

UK contact information

https://navi.optex.net/cert/contact/

EU contact information

Whole document of the DOC can be referenced in the following website;

www.optex.net

The Contents of Packaging Table of Contents

1. For safe use ...........................................................................2

2. Names of the parts ...............................................................4

3. Measuring principle ............................................................ 10

4. Installation ........................................................................... 11

Installing TC-Mi unit ...................................................... 11

Wiring.............................................................................. 13

Setting the DIP switch ................................................... 14

5. Operation start .................................................................. 15

6. Operation ........................................................................... 16

Setting ........................................................................... 16

Output selection ............................................................ 19

Alarm level, Alarm timer ................................................ 20

Signal output response time setting .............................. 21

Noise reduction setting ................................................... 22

Turbidity unit selection ................................................... 23

Offset adjustment ............................................................ 24

LCD contrast adjustment ................................................ 24

Digital communication setting display ........................... 25

7. Troubleshooting .................................................................. 26

8. Maintenance........................................................................ 27

9. Specifications ..................................................................... 29

10. Dimensions ........................................................................ 30

11. Digital communications ...................................................... 31

MODBUS protocol ......................................................... 31

TC-Mi protocol ............................................................... 35

TC-Mi Deaerator

Cleaning paper Instruction Manual

In the unlikely event that there are any missing components or defects, please

contact your dealer.

TC-Mi

Turbidity Checker

Thank you very much for purchasing Turbidity Checker TC-Mi.

All of this instruction manual must be read before operation of the

Turbidity Checker for safe and proper operation.

This instruction manual should be kept for future reference such as

maintenance.

Instruction

Manual

The instruction manual is also available on the following website.

https://navi.optex.net/manual/05297/?lang=en

2 3

Keep the Power off during

installation and wiring

operations.

•

Do not apply strong impact or excessive force

to the TC-Mi unit.

1 For safe use

•Please thoroughly read the “For safe use” before using the

TC-Mi properly.

•Because these precautions are related to failure or malfunction,

observe the precautions for use without fail.

Be sure to read this instruction manual in order

to use the Turbidity Checker TC-Mi properly.

Use the Turbidity Checker only for measurement of

water quality.

In order to use the TC-Mi properly, observe the following precautions.

Precautions which are the cause of failure:

" " denotes "Prohibited action", and " " denotes "Required action".

•

Do not disassemble or modify the product.

•

Turn off the Power immediately in the unlikely

event that there occur any abnormalities such

as smoke or abnormal noise. Otherwise it may

cause fire or an electric shock.

•

Do not wipe the product

with solvent. It may cause

failure.

•

To clean the product, first

wipe away lightly with a

clean soft cloth damped

by diluted mild detergent

solution and then wipe off

moisture with a dry clean

soft cloth.

Organic

solvent

Thinner

Power supply OFF

•

Be sure to use the power supply of 24 VDC.

Otherwise it may cause fire or electric shock.

24 VDC

• Make sure that TC-Mi is not

energized before installing

and wiring.

Turn OFF the power switch.

Disconnect the power cable

from the outlet.

Otherwise, it could result in

fire, electric shock, and

damage.

4 5

Deaerator

2 Names of the parts

Cable clamps

Cover

Panel

Display

Measurement value (During the setting, the setting value is displayed.)

0.1234

NTU Unit

During the setting, the setting item is displayed.

Operation keys

MODE button: enables to confirm the setting items and to determine the

setting values.

Upper and lower arrow buttons: Upper and lower arrow buttons are used to

change the setting values.

button increases a numeric value and button decreases the value.

Measurement bath DIP switch

Display

Operation keys

Fuse

Power supply

switch

Terminal block

MODE

Drain cap

Water outlet

Water inlet

Up and down buttons

[Inside panel]

6 7

Caution

Screws must be tightened securely. Otherwise, sufficient protection cannot

be obtained.

Caution

Fasten the cover fastening screws surely. If these screws are loose, turbidity

might not be measured correctly due to the light entered in the measurement

bath or dust mixed in the measurement water.

Screws for fixing the cover

Open/close the cover by loosening/fastening the four cover fixing screws.

Open/close the panel by loosening/fastening the four cover fixing screws.

How to open / close the Cover

How to open / close the Panel

Caution

•

Do not apply strong impact or excessive force to the joint. Otherwise, it may damage the

joint, as well as may cause crush, rupture, or disconnection of the tube.

•Water temperature must be between 0 and 40ºC.

•The unit must be isolated not to damage other machines or equipment in case of

water leakage.

•Use insert rings if necessary. To determine whether to insert rings or not, check the

specification of the tube. Selection of insert rings unmatched to the specification of

the tube may cause tube coming-off and water leakage.

•Follow the precautions below when attaching the tube.

- The cutting section must be right angle.

- Outer circumference must have no damage.

- The tube must not be shaped like an ellipse.

- The tube must be fully inserted to the end.

- Ensure that the tube is securely inserted and cannot come off after attached.

How to connect / disconnect the tube

Water outlet

Water inlet

MODE

Tube fitting

Connecting

Insert the tube to the tube

fitting.

Disconnecting

Pull out the tube while push the

lip of the tube fitting.

①

②

Applicable tube diameter for water inlet:

Nylon tube: 8 +/- 0.1 mm dia.

Urethane tube: 8 +/- 0.15 mm dia.

Applicable tube diameter for water outlet:

Nylon tube: 10 +/- 0.1 mm dia.

Urethane tube: 10 +/- 0.15 mm dia.

8 9

Water outlet

Water inlet

MODE

How to attach / detach the Drain cap

Drain cap

Caliber φ12

①

②

How to attach / detach the Deaerator

Attach the Deaerator and fix it by using the fixing screws.

Deaerator

Attaching

Insert the Drain cap as far

as it goes.

Detaching

Pull out (②) while pressing down

the tip (①) of the Drain cap.

10 11

Turbidity Checker TC-Mi uses a method of 90 degree scattered light. In

this method, a light source illuminates the surfaces of matter suspended

in the water, and the light is scattered by these surfaces is detected by

a photo element installed at an angle of 90 degrees from the light axis

of the measured light. The turbidity is determined by the amount of the

scattered light.

3 Measuring principle

Light source

Photo element

Suspended matter

Measuring light

Scattered light

Measured water

Installing TC-Mi unit

•

The signal output cable and the power cable

must not be bound together or put in the same

cable clamps.

•

The TC-Mi unit must be installed at the place

which is well-ventilated, and is not exposed to

direct sunlight.

4 Installation

Before installation, remove the cable from the power

supply, and after completion, wire the power supply

cable.

denotes "Prohibited action" denotes "Required action"

•

For wiring the unit, use the bundled cable

clamps.

•

Securely tighten the panel fixing screws. When

the screws are loose, sufficient protection

cannot be obtained.

• Make sure that TC-Mi is not

energized before installing

and wiring.

Turn OFF the power switch.

Disconnect the power cable

from the outlet.

Otherwise, it could result in

fire, electric shock, and

damage.

Keep the Power off during

installation and wiring

operations.

12 13

Install the TC-Mi unit horizontally for all

directions (front/rear, right/left).

Install the TC-Mi unit on the wall. For the mounting pitch, see the figure below.

Horizontal for front/rear

Horizontal for right/left

Caution

230 mm

(Mounting hole: 7 mm dia.)

65 mm

2Wiring

Caution

•

Be sure to use the power supply of 24 VDC. Otherwise it may cause fire or electric

shock.

•

Before installation, turn off the power supply switch, and then wire the power

supply cable. Otherwise it may cause fire or electric shock.

Terminal block

• Compatible cable diameter with the Cable Clamps is 6 to 8 mm

Digital

communication

(RS485)

Power Supply

(24 VDC)

Self-checking

or Alarm

output (O.C.)

4-20 mA

signal output

Reference

For the digital communications, refer to page 31, "11 Digital Communications".

(－) (＋)

RS485 Analog

(4-20 mA)

signal

output

ＢＡ

Spare

Self-checking

or Alarm

output (O.C.)

Spare

F.G.

Power

supply

24 VDC

OFF

FUSE

500 mm min.

14 15

Setting the DIP switch

▼▲

123456 7 8

Up and down buttons

DIP switch

▲ button increases a numeric value and

▼ button decreases the value.

5 Operation start

Turn on the power

Turn on the power, then the display shows measurement value.

Attaching the panel

Attach the panel with screws (see page 6, "How to open / close the Panel").

Passing water

Start passing water through the TC-Mi unit.

•If leaking from the inlet passage, the outlet and the drain, check the connection of the

tubes, joints and drains.

•If the tube vibrate, fix the tube.

Power supply switch

Caution

•Make sure that the panel is attached securely. High water pressure may cause

water leakage, which could result in malfunction.

•Adjust the water flow rate to 100 - 200 mL/min.

Caution

Screws must be tightened securely. Otherwise, sufficient protection cannot be obtained.

2-3

SW Description

7-8

The 4-20 mA signal output can be kept during maintenance. Turn ON SW1

during maintenance.

ON: Hold OFF: Normal measurement

Do not use.

The standard substance of the calibration curve can be selected.

To select formazin, turn OFF SW5.

To select polystyrene, turn ON SW5.

If polystyrene is selected, 度is set for the turbidity unit automatically.

The measurement range can be

selected.

Do not use.

Fine adjustment of lower limit 4 mA and upper limit 20 mA of analog signal

output can be made.

1) Turn ON SW2.

As confirming the reading of the connected equipment such as a recorder,

use the up and down buttons

▼▲

to fine-adjust the 4 mA lower limit.

3) Turn OFF SW2.

4) Turn ON SW3.

As confirming the reading of the connected equipment such as a recorder,

use the up and down buttons

▼▲

to fine-adjust the 20 mA lower limit.

6) Turn OFF SW3.

Caution

Make the fine adjustment of lower limit 4 mA firstly. And then make the

fine adjustment of upper limit 20 mA. Otherwise the value of the upper

limit 20 mA cannot be adjusted accurately.

Caution

To change the measurement range via digital communication, turn OFF

SW7 and SW8.

OFF

SW7 SW8

Measurement range

OFF

ONON

0-100

0-20

0-2

0-5

16 17

Pass water until the water level becomes a certain.

If the water is overflowing from the measuring tank, check the measured water flow rate

and the clogging of the outlet.

Check the displayed measurement value to see if the measurement water is in stable

condition.

Attaching the cover

Checking the measurement value

Attach the cover by using screws (see page 6, "How to open/close the cover").

Caution

When passing the water for the first time, it may take time until the measurement

value becomes stable. Clean the measurement tank and the Deaerator as needed.

Checking water level

Caution

Fasten the cover fastening screws surely. If these screws are loose, turbidity might

not be measured correctly due to the light entered in the measurement bath or dust

mixed in the measurement water.

6 Operation

Setting

Measurement value is displayed after the unit is activated.

Each time the button is pressed, the setting item is changed.

Press and hold the button for 2 seconds or more to check or change the

setting.

Use the button to change the setting value. Pressing and holding the

button keeps changing the displayed value.

0.1234

NTU

Press and hold button

Measurement value display

Signal output response time

Turbidity unit selection

Offset adjustment

LCD contrast adjustment

Digital communication setting display

Output selection

(Self-Checking / Alarm)

Noise reduction setting

Use button for change, and button for determining

Alarm level setting

Use button for change, and button for determining

Return to the measured value display by the button.

* Displayed only when alarm output is selected

Use button for change, and button for determining

* Displayed only when alarm output is selected

Alarm timer setting

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