Aumeascon AM-D-ODO Digital Optical Dissolved Oxygen Sensor

AM-D-ODO Digital Optical Dissolved Oxygen Sensor 

Brief Introduction

Aumeascon AM-D-ODO dissolved oxygen sensor uses optical (fluorescence) measurement of dissolved oxygen, blue light emitted by the phosphor layer, a fluorescent substance is excited to emit red light, and the fluorescent substance and the concentration of oxygen is inversely proportional to the time back to the ground state. The method uses a measurement of dissolved oxygen, no oxygen consumption measurement, the data is stable, reliable performance, there is no interference, installation and calibration simple. Widely used in sewage treatment plants each process, water plants, surface water, industrial process water production and wastewater treatment, aquaculture and other industries on-line monitoring of DO.

 

Technical Features

ü The sensor uses a new type of oxygen-sensitive film with good reproducibility and stability.

ü No need maintenance by breakthrough fluorescence techniques.

ü Maintain prompt the user can customize the prompt message is automatically triggered.

ü Hard, fully enclosed design, improved durability.

ü Use simple, reliable, and interface instructions can reduce operational errors.

ü Set a visual warning system to provide important alarm functions.

ü Plug and play: easy to on-site installation.

  

Technical Parameters

Model	AM-D-ODO	AM-D-ODOS
Application	Fresh water	Sea water
Body material	SS316L	Titanium
Principle	Optical ( fluorescent )
Measuring range	Dissolved oxygen:0-20 mg/L(ppm) Temperature:0~45℃
Resolution	Resolution:±3% Temperature: ±0.5℃
Accuracy	± 3%
Output	MODBUS RS485
Pressure range	≤0.3Mpa
Output	MODBUS RS485
Process connection	R1
Storage temperature	-15~65℃
Ambient temperature	0~45℃
Water proof cable	PVC, standard:10meters and it can be extended to 100meters

 

Wire Connector

Serial No.	1	2	3	4
Sensor Cable	Brown	Black	Blue	White
Signal	+12VDC	AGND	RS485 A	RS485 B

 

Maintenance

In order to obtain the best measurement results, it is very necessary to maintain the sensor regularly. Maintenance mainly includes cleaning, inspecting damage of the sensor, and periodic calibration.

 

Sensor Cleaning : It is recommended that the sensor should be cleaned at regular intervals (usually 3 months, depending on the site environment) to ensure the accuracy of the measurement.Use water to clean the outer surface of the sensor. If there is still debris, wipe it with a damp soft cloth. Do not place the sensor in a direct sunlight or near radiation. In the entire life of the sensor, if the total sun exposure time reaches to one hour, it will cause the fluorescent cap aging and going wrong, and consequently leading to the wrong reading.

 

Inspection on the Damage of Sensor : According to the appearance of sensor to check if there is damage; if any damage is found, please contact after-sales service maintenance center in time for replacement to prevent malfunction of sensor caused by water from the damaged cap.

 

Preservation of Sensor : A.When you are not using it, please cover the product’s original protective cap to avoid direct sunlight or exposure. In order to protect the sensor from freezing, the DO probe should be stored in a place where it will not freeze.

B.Keep the probe clean before storing it for a long time. Keep the equipment in a shipping box or a plastic container with electric shock protection. Avoid touching it with hand or other hard objects in case of scratching the fluorescent cap.

C.It is forbidden that the fluorescent cap is exposed to direct sunlight or exposure.

 

Replacement of Measurement Cap : The sensor's measurement cap needs to be replaced when it’s damaged. In order to ensure the accuracy of the measurement, it is recommended to change it every year or it is necessary to be replaced when the cap is found severely damaged during the inspection.