ROCKER CD 200 Chemical Oxygen Demand Detector Instruction Manual
- June 1, 2024
- ROCKER
Table of Contents
ROCKER CD 200 Chemical Oxygen Demand Detector Instruction Manual
Please read this instruction manual before using this product.
Important Notice
This instrument is designed for laboratory usage only. Please read this manual carefully before installing and operating. The instrument shall not be modified in any way. Any modification will void the warranty and may result in potential hazard. We are not responsible for any injury or damage caused by any non-intended purposes and modifying the instrument without authorization.
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Check the voltage specified on the name plate and ensure it matches the line voltage in your location.
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Install the instrument in a clean, dust-less and well-ventilated area under 40°C.
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The instrument can be powered either by a power adaptor or a DC9V battery. For safety reasons, it’s recommended to use the power adaptor supplied by the manufacturer.
If using a DC9V battery, please remember to remove it when instrument will be unused for an extended period to prevent leakage. -
Review Safety Data Sheets (SDS) before handling reagents, as they may be hazardous.
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Please discard packing material according to local related regulations.
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For more product details, please refer to the latest catalog and website.
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Operating condition
(a) Ambient temperature: 5~ 40 °C
(b) Relative humidity: 80% RH Max.
(c) Power supply: 100~120V, 50/60Hz or 200~240V, 50/60Hz
(d) Altitude: up to 2000 m
(e) Pollution degree: II
(f) Indoor use
* Before starting COD measurement, allow the vials to cool down to room temperature and ensure the reagent is uniformly mixed and completely precipitate.
Unpacking
Please check if the package is complete without any damage before unpacking. When unpacking, please make sure you have all accessories that indicated on the list. If there is any problem, please keep the serial number along with packing case and contact your local distributor immediately for assistance.
| Item | Content |
|---|---|
| 1 | CD 200 Detector |
| 2 | Power Adaptor |
| 3 | Instruction Manual |
Main Part Diagram
| Item | Designation |
|---|---|
| 1 | Vial Dust Cap |
| 2 | Vial Holder |
| 3 | Display |
| 4 | Buttons |
| 5 | DC Socket |
| 6 | Battery Cover |
| 7 | Power Adaptor |
| 8 | DC9V Battery (Optional) |
Button / Symbol Explication
Buttons
| Button | Designation | Description |
|---|---|---|
| Data | Data Button | Display information and data on the screen. |
| Menu | Menu Button | Return to the previous menu. |
| Up Button | Scroll upward through menus or stored data. | |
| Down Button | Scroll downward through menus or stored data | |
| Right Button | Scroll to right through menus or stored data | |
| Enter Button | (1) Select the current menu option. (2) Confirm and accept the |
input value.
| Power Button| Turns the power on or off
Symbols
| Symbol | Description |
|---|---|
| Indication of power adaptor connection. | |
| 100% full power. | |
| 66% power | |
| 33% power | |
| 5% low battery. Please replate the battery promptly. (Backlight and sound |
disabled)
| Selected option
| Selected option
Operation
Installation
-
Power Supply
The instrument can be powered either by a power adaptor or a DC9V battery.-
Power Adaptor:
Ensure the power supply voltage matches the voltage rating for CD 200 (100-240V~), with an output voltage of DC12V. -
DC9V Battery:
Users can install a DC9V battery by removing / installing the battery cover at the back of CD200.
-
-
Please remove the battery if CD 200 will be unused for an extended period to prevent leakage.
-
Power On / Off
- Power On: Press the power button , and you can start using CD 200.
- Power Off: Press the power button , and select the “Yes” option to shut it down
Menu
| Menu | Item | Description | Remark |
|---|---|---|---|
| Main Menu | 1: COD TEST | Select the Curve Brand. | |
| 2: Time | Date and time setting. | ||
| 3: Backlight | Backlight setting. | ||
| 4: Sound | Sound setting. | ||
| 5: Auto Shut | Auto power setting. | ||
| 6: Memory | Memory setting. | ||
| Curve Menu | 1: HACH | HACH COD standard curve. | |
| 2: Lovibond | Lovibond COD standard curve. | ||
| 3: CHEMetrics | CHEMetrics COD standard curve | ||
| 4: HANNA | HANNA COD standard curve. | ||
| 5: Merck | Merck COD standard curve | ||
| 6: User-1 | User Curve | Self-Calibration. | |
| 7: User-2 | User Curve | Self-Calibration. | |
| 8: User-3 | User Curve | Self-Calibration. | |
| 9: User-4 | User Curve | Self-Calibration. | |
| Curve Range | 150 | Measuring range 10 ~ 150 mg/L | |
| 1500 | Measuring range 100 ~ 1500 mg/L | ||
| 15000 | Measuring range 1000 ~ 15000 mg/L | ||
| Operating Menu | Info | (1) Standard Curve: display curve measuring range. (2) | |
| User Curve: display calibration data | |||
| CAL | Calibration Parameters |
Curve Operation
Built-In Standard Curves – Hach, Lovibond, CHEMetrics, HANNA, Merck
- Built-in standard curves are preloaded with saved calibration values for direct COD testing.
- Insert sample vials in the same direction to keep COD values consistent.
| Step | Operation | Screen Display |
|---|---|---|
| 1 | Switch on the instrument and LOGO shows on the screen. Switch on the | |
| instrument and LOGO shows on the screen. | 
2| The curve menu shows on the screen in 2 seconds.|
- HACH<<
- Lovibond
3| Select desired curve based on the used reagent brand by using 「▲」 or 「▼」. Press 8 button to enter the curve range|
- HACH<<
- Lovibond
4| Press 「 ▶」and select curve range based on reagent concentration: 150, 1500,
or 15000. Press 8 button to enter the operating menu.| HACH-1500 150 1500<
15000
5| While Start is selected, press 「 ▶」 to start a COD test..| HACH-1500 Start<
Info
6| Insert Blank vial into the vial holder, and “Blank OK” message appears in 2
seconds.| HACH-1500 Insert Blank
7| Remove the Blank vial and insert sample vial when “Insert Sample” message
appears| HACH-1500 Insert Sample
8| The COD value will appear in 2 seconds and the data will be saved
automatically.| HACH-1500 １００１ mg/L
9| Remove the sample vial from the vial holder and insert another vial to test
COD value.| HACH-1500 ４８７ ﹒ １ mg/L
- “<<” and “＜” symbols indicate the selected option.
- Press the Data button to display stored data on the screen.
- The Info on the operating menu displays the range of reading value.
- “Over Range” or “Under Range” errors occur when the testing concentration is outside the range of the current COD curve.
User Curves Calibration – User-1, User-2, User-3, User-4
-
Ensure to calibrate using standard solution and reagent vials during initial use.
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Set the concentration values equally to prevent errors from close absorbance readings.
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Complete the Blank calibration and use more than 1 standard to finish the calibration.
You can save up to 6 standard setpoints in one curve. -
Avoid calibrating the same concentration twice to prevent errors in calibration parameters.
-
Insert sample vials in the same direction to keep COD values consistent.
| Step | Operation | Screen Display |
|---|---|---|
| 1 | Switch on the instrument and LOGO shows on the screen. | 
2| The curve menu shows on the screen in 2 seconds.|
- HACH<<
- Lovibond
3| Select user curve by using 「▲」 or 「▼」. Press button to enter the curve range.|
- Merck
- User-1<<
4| Press 「 ▶」and select curve range based on reagent concentration: 150, 1500,
or 15000. Press button to enter the operating menu.| User-1-150 150< 1500
15000
5| Press 「 ▶」and select CAL. Press button to proceed calibration.| User-1-150
Start Info CAL<
6| Insert Blank vial when “Insert Blank” message appears.| User-1-150 Insert
Blank
7| Insert Blank vial into the vial holder, and “Blank OK” message appears in 2
seconds.| User-1-150 Blank OK
8| Remove the Blank vial and press button to confirm.| User-1-150 Blank OK
9| Insert 1st standard vial into vial holder when “Insert Std 1” message
appears.| User-1-150 Insert Std 1
10| Input the standard concentration value by using「▲」, 「▼」 and 「 ▶」.|
User-1-150 00050 mg/L
11| Remove the sample vial from the vial holder and press button to save the
1st setpoint.| User-1-150 S1:50.0 mg/LOK<
12| Repeat step 9~11 until standard vials are finished. Press Menu and select
Save to complete the calibration. Save: Save the calibration parameters and
exit. Exit: Exit without saving CAL parameters. CAL: Back to the calibration.|
User-1-150 Save< Exit CAL
- After completing the calibration, follow steps in P.10 3.3 Calibration Verification to verify its success.
Calibration Verification – User-1, User-2, User-3, User-4
- After completing the calibration, follow these steps to verify its success.
- If the calibration fails, please refer to P.8 3.2 User Curves Calibration for instructions on redoing the calibration.
| Step | Operation | Screen Display |
|---|---|---|
| 1 | Switch on the instrument and LOGO shows on the screen | 
2| The curve menu shows on the screen in 2 seconds.| 1: HACH<< 2: Lovibond
3| Select user curve by using 「▲」 or 「▼」. Press button to enter the curve
range.| 5: Merck 6: User-1<<
4| Press 「 ▶」and select curve range based on reagent concentration: 150, 1500,
or 15000. Press button to enter the operating menu.| User-1-150 150< 1500
15000
5| Press 「 ▶」and select Info. Press 8 button to verify the calibration result|
User-1-150 Start Info< CAL
6| CAL point: Number of calibration setpoints. OK: Calibration parameters are
correct. NG: Calibration parameters are incorrect, please redo the
calibration.| User-1-150 CAL point=2OK<
7| Check the concentration of setpoints using 「▲」 or 「▼」. Press or Menu
button to return to the previous menu.| User-1-150 S1=1500.0mg/L<
Change Name of User Curve – User-1, User-2, User-3, User-4
| Step | Operation | Screen Display |
|---|---|---|
| 1 | Switch on the instrument and LOGO shows on the screen. | 
2| The curve menu shows on the screen in 2 seconds.| 1: HACH<< 2: Lovibond
3| Select user curve by using 「▲」 or 「▼」. Press button to enter the curve
range.| 5: Merck 6: User-1<<
4| Press and hold 「 ▲」for 2 seconds during the curve range menu to change the
curve name.| User-1-150 150< 1500 15000
5| Use「▲」, 「▼」 and 「 ▶」to change the characters (up to 10 characters).| User-1
=>User-1
6| Press button to save the name. Press Menu button to exit without saving.|
User-1-150 =>ROCKER
Check Testing Data
CD 200 can store up to 100 records and automatically delete the oldest record when the limit is exceeded.
| Step | Operation | Screen Display |
|---|---|---|
| 1 | Press the Data button to display stored information under every menu page. |
1: HACH<< 2: Lovibond
2| The displayed data includes the date, time, curve name, curve range, data
number and COD value.| 2 0 1 6 / 0 2 / 0 6 0 8 : 3 4 022 ４８７ １ mg/L
3| The data, time, curve name and curve range will alternate in the first row
every 2 seconds. Press「 ▶」to stop the automatic switching and switch it
manually.| HACH-1500 022 ４８７１ mg/L
4| Use 「▲」 or 「▼」 to display different data. Press Menu button to exit.|
2016/02/0608:33 021 ９９９ ﹒ ９ mg/L
Setup of Basic Settings – Time, Backlight, Sound, Auto Shut, Memory
| Step | Operation | Screen Display |
|---|---|---|
| 1 | Switch on the instrument and press the Menu button to return to Main Menu. |
1: HACH<< 2: Lovibond
2| 1: CODTest 2: Time<<| 1: CODTest 2: Time<<
3| Use「▲」, 「▼」 and 「 ▶」to change the settings. Press 8 button to save and
exit.| Data:2016/02/06 Time:09:34
List of Settings and Their Meanings
| Settings | Options | Description |
|---|---|---|
| Time | N/A | The time setting is automatically saved upon modification. |
| Backlight | On | Backlight remains continuously on |
| Auto | Backlight turns on but automatically turns off after 3-min idle time. | |
| Off | Backlight remains off. | |
| Sound | On | Sound is enabled |
| Off | Sound is disabled | |
| Auto Shut | On | The instrument will automatically switch off after 10-min idle |
time
Off| Auto Shut feature is disabled
Memory| On| After switching on, the last menu displayed before shutdown.
Off| After switching on, the curve menu will be displayed.
Maintenance
- Please clean the surface with a damp cloth, mild soap, or 75% ethanol and dry it.
- Use the dust cap to prevent from dust accumulation for reliable performance.
- Remove the battery if the instrument will be unused for an extended period to prevent leakage.
- Clean the vial holder with ethanol to avoid reading interference due to dirt accumulation.
Troubleshooting
| Problem | Reason and Solution |
|---|---|
| Fail to start or Abnormal Display |
- Wrong power supply Connect to power specified on mani unit.
- Loose plug Reconnect plug to power supply and instrument.
- Battery error Replace with a new 9V battery.
- Display or components failure Contact distributor for assistance
Dark Display|
- Incorrect backlight setting Turn on the backlight.
- Low battery Replace with a new 9V battery.
- Display or components failure Contact distributor for assistance.
Error Messages|
- Incorrect range of reagent Ensure range of curve and reagent is corresponding.
- Over / under range Testing value exceeds than used curve range.
- Blank NG Used wrong range of reagent vials.
Other problems|
- Please contact distributor for assistance
Ordering Information
198200-01(02) CD 200, COD Detector, AC100~240V adaptor, US plug (EU plug)
179250-11(22) CR 25, COD Reactor, AC110V,60Hz (AC220V,50Hz)
179250-43 Protective Lid
191100-01(02) WD 100, Multiparameter Colorimeter, AC100~240V adaptor, US plug
(EU plug)
AWE770110 1000~5000 ul Pipette (Adjustable)
SSI 5000-50 5 ml Pipette Tip (50/PK)
Rocker Scientific Co., Ltd.
Tel: +886-2-26033311 Fax: +886-2-26036622
E-mail: export@rocker.com.tw
https://www.rocker.com.tw
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>