Cheonsei MESTAR+ User manual

www.cheonsei.co.kr

Digital DO Controller

Instruction Manual

DIGITAL CONTROLLER

Thank you very much for purchasing Cheonsei digital DO controller.

Please read this instruction manual before beginning operation.

Handling and maintenance are explained in easy way. Read through this manual and

use correctly the product. Correct handling, repair and maintenance are described

easily.

※ The specication of products can be changed for improvement without prior notice.

1. Notice for Safety ………………………………………………………… 3

2. Product Conrmation …………………………………………………… 4

3. General ………………………………………………………………… 4

4. Model code ……………………………………………………………… 5

5. Specications …………………………………………………………… 5

6. SET Components ……………………………………………………… 6

7. Name & Function of Each part ………………………………………… 7

8. Calibration ……………………………………………………………… 8

9. Setting & Operating …………………………………………………… 10

10. System Diagram …………………………………………………… 15

11. Handling of Components …………………………………………… 15

12. Cause & Solution of Problem ……………………………………… 20

13. Warranty ……………………………………………………………… 20

14. Repair Service ……………………………………………………… 21

15. Controller Wiring ……………………………………………………… 21

16. Controller Dimension ……………………………………………… 22

CONTENTS

Notice for Safety

1-1 Introduction

• To use the products safely, the signs are showed on the manual like below.

• As it is a matter of safety, please be sure to keep the directions in manual.

• he signs and indication are as follows.

Warning

Person death or serious injury will be occurred, if warning is not kept by wrong handling.

Caution

Person injury or property damage will be occurred, if caution is not kept by wrong handling.

1-2 Cautions for Operation Condition

Caution

• Do not use controller and its components for other purposes.

Otherwise, it may cause trouble.

• Please keep the followings, otherwise it may cause trouble.

Ambient temperature : -5 ~ 45℃

Relative humidity : below 90%

Install location : Indoor and inside of electrical panel

Temperature of the handling liquid : below the working temperature described in the electrode

specication

• Gas or moisture, which occur in jobsite, can lead to the internal corrosion of the controller and it may

cause reduction of service life and trouble.

1-3 Warning for Handling Condition

Warning

• Install this controller beyond the reach of children and/or unauthorized person.

• Turn off the power and stop the controller & other equipments when repairing or disassembling the

controller.

If power is on during work, it may cause electric shock.

• Controller should be properly grounded and install ELCB(Earth Leakage Circuit Breaker) in order to

prevent electric shock.

• In case of installation in the electric panel, install the controller after securing sufcient space in order not

to contact with the components inside electric panel.

• Do not touch with wet hands. Electric shock may occur.

• Use only designated parts. If undesignated parts are used to the controller, it may cause accident &

trouble.

• Do not arbitrarily reconstruct the controller. If the controller is arbitrarily reconstructed, it may cause

accident & trouble.

General

Caution

• Do not use the controller of which case was damaged. If the controller is used, it may cause trouble to

equipment connected with the controller.

• Do not install controller in the heavy moist or dusty place. Electric shock and trouble may occur.

• Do not use power other than that specied in controller. Otherwise, it may cause malfunction or

re.

• Refrain from voltage withstand test in order to prevent damage of internal parts.

• Dispose of waste controller in accordance with related national law.

2-1 Check Point When Unpacking

Please check following points immediately after receiving the product.

If the defect is found from the product, please request it to local agent or CHEONSEI.

 Is specication correct as ordered?

 Is there any missing parts ?

 Is there any visible damage caused by vibration or shock during transport?

 Is there any loosened bolt or nut?

2-2 Components

Controller

• Digital DO controller : 1Set

• Bracket(SPC-1 M4×52) : 2EA

• Instruction Manual : 1 COPY

SET Components

•Refer to section 6.

Product Confirmation

This controller is a digital controller built-in micro processor. It can be used by composing circuit with the

external devices through dry contact of analog Input & output and, as option, it can be composed according

to wanted using condition by installing Communication card.

This controller is designed only for a high insulation shielded cable.

If you need to extend the electrode cable, refrain from using the general cable in market and use our high

insulation shielded cable.

Model Code

Specifications

5-1 Controller

Specication Performance

Display and

Measuring Range

DO 0.00 ~ 20.00ppm(mg/L)

Temp -10.0 ~ 100.0℃

Resolution/

Accuracy

DO 0.01ppm(mg/L) / 0.01ppm(mg/L)

Temp 0.1℃ / 0.5℃

Ambient temp. & Humidity -10℃ ~ 40℃, Lower than relative humidity 80%RH

(Dew and dew condensation must not be formed)

Range of Temp. Compensation Auto/Manual 0 ~ 50℃

Calibration Method 2 points calibration(Zero : Zero solution, Span : Saturated water or Air)

Display 3in LCD Segment Display (LED Back Light : White)

Alarm Output

Setting HIGH, LOW

Output Dry Contact 1a 1b Contact Capacity : 0.5A, 125VAC / 1A, 24VDC

Dead Band 0.00 ~ 0.30ppm(mg/L)

Analog Output DO 0.00 ~ 20.00ppm(mg/L) 4~20mA Isolated Output

(Load Resistance 500Ω)

Temp -10.0 ~ 100℃ (Option)

Memory EEPROM

Communication Method RS-485 (Option)

Power AC85~245V, 50/60Hz (Power consumption : 3W)

Case Material Anti-static ABS

Size 96mm×96mm×115mm

Weight Approx. 400g

Installation Place Indoor, Inside electric panel

D –

 ① ② ③ ④

①Type ②Controller Type ③Output ④Electrode Type

D : DO B : Standard 0 : Standard 1 : CPD11(Galvanic)

(Dissolved Oxygen) 1 : Temperature

(4~20mA)

Set Components

5-2 Electrode

Specication Remark

Model CPD11

Type Dissolved Oxygen Measurement

Electrode Type Galvanic

Measurement Range 0.00 ~ 20.00 ppm(mg/L)

Velocity which measurement is available 0.35m/s 98±0.5%

Temp. Compensation Element Pt 1000Ω

Workable Temp. 0 ~ 60℃

Workable Pressure Max. 1 bar

Reply Time 90% in 2 minutes Based on 25℃

Cable Length 5m

Material ABS

6-1 Standard components

SET Model Components Specication Quantity

MESTAR+

DB0-1

Controller Digital DO Controller 1Set

Panel Bracket SPC-1 M4 x 52mm 2EA

Instruction Manual 24Page 1Copy

Electrode CPD11 1Set

Electrode Holder Standard : Ø341m, Material : PE 1Set

Braket Holder Material : PVC 1Set

Connection Box Prevention of Electrostatic Induction Special

lm coating 1Set

Connection cable High Insulation Special Shielded Cable 20m

Buffer Powder Sodium Sulte(Na2SO3) 15g 1EA

Power Container 500cc, Material : PE 1EA

※ Some components may vary depending on the SET model.

6-2 Optional item



Connection Cable(up to 100m)



Sampling Holder

Name & Function of Each Part

7-1 Front

 Display : 3” LCD Segment

①Status

•SETUP : Display in setup mode

•MEAS : Display in measurement mode

•CAL : Display in calibration mode

•ZERO : Display in ZERO calibration

•SPAN : Display in SPAN calibration

② Main display : Measured valve or setting

screen is displyed according to

Mode

③ Alarm

•HOLD : Display in setting of measurement

value xed

•HIGH : Display in HIGH alarm

•LOW : Display in LOW alarm

④ Sub Display : Display temp. or display setting value when enter in setting mode or calibration

mode

⑤ Unit : Display the unit which is set

Key

: Enter Calibration Mode, if press the button for 5 seconds in Measuring Mode.

Exit the Calibration Mode, if press the button in Calibration Mode.

(Can not enter Calibration Mode when Setting Mode, displaying Error, & Setting to hold the

measured value)

: Enter the Setting Mode, if press the button in Measuring Mode.

Return to previous Mode, if press the button in Setting Mode.

: Menu is changed or Setting Value is increased, if press the button in Setting Mode or Calibration

Mode.

Setting value is fast increased, if press the button continuously.

High Alarm Setting Value is displayed for 3 seconds, if press the button for 3 seconds in

Measuring Mode.

: Menu is changed or Setting Value is decreased, if press the button in Setting Mode or Calibration

Mode.

Setting value is fast decreased, if press the button continuously.

Low Alarm Setting Value is displayed for 3 seconds, if press the button for 3 seconds in

Measuring Mode.

: Save the setting value in Setting Mode or Calibration Mode.

The buzzer will sound and all setting values will be initialized, if press the button for 5 seconds in

Measuring Mode.

(Unable to initialize when Setting Mode, Calibration Mode, & displaying Error)

※ When initialization, all calibration values and setting values will be changed to the initial setting

values before delivery from factory.





8-1 Calibration

This controller is Two-Point Calibration type and supports Air calibration and Solution calibration.

Air calibration makes Zero calibration set automatically.

Solution calibration is recommended to use 0.2mol Na2SO3(Na2SO3 12g + distilled water 500ml) as Zero

standard solution. Refer to the below table for saturation dissolved oxygen according to temperature. (Under

the condition of 1atm and salinity 0ppt)

Temperature(℃) Dissolved oxygen(mg/L) Temperature(℃) Dissolved oxygen(mg/L)

0 14.62 25 8.26

512.77 30 7.56

10 11.29 35 6.59

15 10.08 40 6.41

20 9.09 45 5.93

8-2 Cautions for calibration

In calibration mode, do not be changed to Measuring Mode even after several minutes.

To exit the Calibration Mode, should stop calibration by pressing the CAL Key or complete calibration by

pressing the ENTER Key.

 During calibration, if press CAL key to exit Calibration Mode or the Calibration Mode is exited in an

unusual manner, such as power off, Calibration Values are not stored.

Clean the electrodes with clean or distilled water before submerging it.

 The dissolved oxygen is much inuenced by the rate of liquid ow. Calibrate the rate with the same ow

rate obtained at the time of measurement. The reliability of the measure value is reduced, if the ow rate

at the time of calibration is different from that at the time of measurement.

 Calibrate in the manner that the range to be measured falls within the Zero and Span range; otherwise, its

accuracy drops.

(Ex. Meas: 8ppm  Zero: 0ppm, Span: 10ppm)

Solution calibration will be more accurate than air calibration.

It is recommended that the Span calibration should be at least in excess of 5ppm.

There can be a considerable difference between analysis by an instrument and analysis by a reagent.

Analysis by a reagent is advised to adopt to have precise measurements.

Calibration

7-2 Rear

① Relay High : HIGH Alarm Output Terminal

② Relay Low : LOW Alarm Output Terminal

③ Power : Power Supply Terminal

④ Sensor : Electrode Connection Terminal

⑤ Process : Analog Output Terminal for 4~20mA

of 0 ~ 20ppm

⑥ Temp : Analog Output Terminal for 4~20mA

of -10 ~ 100℃ (Option)

Warning

•Do not handle calibration powder or solution used for product calibration by children or the elderly & the

infirm, since it may be harmful to the human body.

Be sure to follow the doctor's prescription when drinking it.

8-3 Air Calibration

Clean the electrode with distilled water.

Wipe the electrode up carefully so it is free of

moisture.

Expose the electrode to the air with its sensor

facing to the bottom.

 In the Measuring Mode, press the CAL key for 5

seconds to enter the Calibration Mode.

Currently, the Calibration mode appears on the

main screen. (AIR: air, SOL: solution)

 You can change settings in the Calibration mode

by using the ▲and ▼keys.

 Select Air (the Air calibration only supports Span

calibration).

The main screen displays the current DO

concentration.

The secondary screen displays the current

temperature.

Press the Enter key to save the current value

when the controller’s concentration gets stabilized.

The screen returns to the Measurement mode

automatically when the calibration is completed.

8-4 Zero Solution Calibration

Clean the electrode with distilled water.

 Immerse the electrode in a Zero solution.

 In the Measuring Mode, press the CAL key for 5

seconds to enter the Calibration Mode.

the Calibration mode appears on the main screen

(AIR: air, SOL: solution)

 You can change settings in the Calibration mode

by using the ▲and ▼keys.

 Select SOL

 The status window displays zero (0).

 You can change the Zero and Span mode by

using the ▲and ▼keys.

 Check the zero on the status window and press

the Enter key.

The main screen displays the current DO

concentration.

 The secondary screen displays the Zero

concentration to be calibrated.

 You can change settings in the Calibration

concentration by using the ▲and ▼keys.

When the controller’s concentration stays

stabilized, align it with the Zero concentration to be

calibrated and then press the Enter key to save the

current value.

The screen returns to the Measurement mode

automatically when the calibration is completed.

8-5 Saturated Water(Span) Calibration

Clean the electrode with distilled water.

Immerse the electrode in saturated water.

 In the Measuring Mode, press the CAL key for 5

seconds to enter the Calibration Mode.

 The Calibration mode appears on the main screen (AIR:

air, SOL: solution)

 You can change the Calibration menu by using the ▲

and ▼keys.

 Select SOL.

 The status window displays zero (0).

 You can change Zero, Span calibration mode by using

the ▲and ▼keys.

 After check SPAN in the status window, press Enter

key.

The main screen displays the current DO concentration.

The secondary screen exhibits the Span concentration

to be calibrated.

 You can change calibration concentration by using the

▲and ▼keys.

 When the controller’s concentration stays stabilized,

align it with the Span concentration to be calibrated and

then press the Enter key to save the current value.

The screen returns to the Measurement mode

automatically when the calibration is completed.

9-1 Menu setting

You can enter Menu mode by pressing the Menu key in Measuring mode, and can return to Measuring mode

by pressing Menu key in Menu mode.

In Menu mode, if there is no any keystroke for 20 seconds, return to Measuring mode without any storage of

the value that is being set.

Enter key must be pressed to save the setting value.

9-2 Standard setting value

Menu Standard setting value

Alarm setting(rEL) High 8.00ppm

Low 2.00ppm

Unit setting(unit) Meas ppm

Temp ℃

Dead band (d.bnd) 0.00ppm

Offset(oFS) 0.00ppm

Damping(dAn

-p) 0.00ppm

Hold on measured value(hold) OFF

Automatic Temp. Compensation(ATC) ON

Temp. Offset(t.oFS) 0.0℃

Setting and Operating

Table of contents

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