d)After all the above operations are performed the FAIL LED will turn off and STATUS LED will turn green and Status “0” should be obtained.

e)The unit may be tested now, using the TEST menu item (See Section 5.5), or the built-in self-testing feature, (See Section 9.1.4)

f)Bring the unit on line for measurement and control.

9.3Printed Circuit Board Replacement

9.3.1a) To replace printed circuit boards or relays shut off all power to the DOCN600, including any independent power to the relay contacts. Make a record of the external wiring, then disconnect the wires. Unplug the ribbon cable connector.

b)The power supply circuit board is fastened to the back of the enclosure by four screws, remove the screws and the board is free. Reverse the procedure to mount a replacement board.

c)The microprocessor circuit board is located on the swing-out assembly behind the door. Swing the assembly out, lift it up to unseat the lower hinge pin (the upper hinge pin is spring loaded.) The assembly is now free. The circuit board is fastened to the front panel by three screws. Remove the screws to release the circuit board.

9.4Sensor Fault

9.4.1If the membrane of the sensor cartridge is pierced, the alarm relay contacts will close and the FAIL LED and STATUS LED will be illuminated. However, it may be difficult to see the leakage with the naked eye. A slight pressure on the membrane with a finger will produce a drop of liquid. The cartridge must be replaced. See Section 9.4.3.

9.4.2With operating time silver oxide will build up on the anode (silver wire). When the anode becomes brown as a result of the deposit, it is time to replace the sensor cartridge.

9.4.3To replace the sensor cartridge, unscrew the retaining nut, remove and discard the spent cartridge and replace with a new cartridge. Part No. DOE-601-SC.

9.5Relay Replacement

9.5.1The relays are plugged into the power supply board just above the terminals. Be sure all the power including independent power to the relay is off. Unplug the relay in question and replace with a new relay. Contact OMEGA Engineering for assistance.

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Omega Engineering DOCN600, Dissolved Oxygen System manual Printed Circuit Board Replacement, Sensor Fault, Relay Replacement
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DOCN600, Dissolved Oxygen System specifications

Omega Engineering has set a standard in the field of environmental testing and monitoring with its advanced Dissolved Oxygen System, the DOCN600. This sophisticated device is engineered for precision and reliability, making it a preferred choice for various applications, from wastewater treatment to aquaculture, and laboratory settings. The DOCN600's primary mission is to accurately measure dissolved oxygen levels, a critical parameter in assessing water quality and supporting aquatic life.

One of the standout features of the DOCN600 is its state-of-the-art optical dissolved oxygen sensor technology. Unlike traditional Clark-style electrochemical sensors, which can be subject to interference and require frequent calibration, the optical method uses luminescence to measure oxygen levels. This technology offers several advantages, including lower maintenance requirements, enhanced stability, and improved accuracy over a broad range of conditions.

The DOCN600 boasts a user-friendly interface, complete with a high-resolution LCD display that provides real-time data visualization. Users can access multiple display modes, allowing for quick reference of key metrics, including temperature and oxygen saturation levels. Furthermore, the system is designed with intuitive menus that facilitate easy navigation, ensuring that both seasoned professionals and beginners can operate the device with confidence.

For data management, the DOCN600 is equipped with advanced connectivity options, including USB and RS-232 ports. This allows for seamless integration with external devices and enables users to export data for further analysis. Coupled with its internal memory, which can store extensive historical data, this system empowers users to monitor trends over time, aiding in decision-making processes.

Another notable characteristic of the DOCN600 is its robust build quality, ideal for deployment in various environmental conditions. The system is engineered to be resistant to water, dust, and harsh chemicals, ensuring longevity and reliable performance even in challenging environments. Additionally, with its compact and portable design, it can be conveniently used in field applications as well as in stationary setups.

In summary, the Omega Engineering DOCN600 Dissolved Oxygen System combines cutting-edge optical technology, user-friendly features, advanced connectivity, and a durable design. It stands out as an invaluable tool for anyone needing precise and reliable dissolved oxygen measurements. Whether used in research, environmental monitoring, or industrial applications, the DOCN600 is an excellent investment for achieving accurate water quality assessments.
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