DUC2-DO online dissolved oxygen controller for sewage plant

The DUC2-DO Dissolved Oxygen Controller independently developed and produced by Daruifuno can be connected with an Optical Dissolved Oxygen Sensor to realize continuous monitoring of the dissolved oxygen value of water quality. In addition to having 2 relays, RS485 interface, time and historical data functions, the dissolved oxygen controller has two 4-20mA current outputs. This enables the ability to control oxygenation using a dissolved oxygen controller. First use a Dissolved Oxygen Sensor to measure the level of dissolved oxygen, convert the value into an electrical signal, the controller receives the electrical signal, and can display the dissolved oxygen value on the screen. Customers can connect the line of the oxygenation pump or aerator to the 4-20mA current output terminal of the controller, and then set the target dissolved oxygen value corresponding to the current output on the controller. In this way, the dissolved oxygen controller will adjust the output signal to control the current of the oxygenation equipment according to the difference between the measured value and the target value, and control the dissolved oxygen value of the solution within a certain range. This is more widely used in aquaculture and sewage treatment.

Features

3.2-inch LCD display, displaying rich data
2 configurable relays
2 channels of 4-20mA current can be used for high-precision oxygen control
Time and historical data recording function, can record 10000 data
AC or DC optional, both are wide voltage power supply

Specification

Product Name	Dissolved Oxygen Meter
Product Model	DUC2-DO
Display Range	DO: 0-20mg/L (or ppm), unit can be switched
Display Range	Saturation:?0-400%
Display Range	TEMP: -10～500℃ /14~932℉
Resolution	0.01mg/L? ?1%? ?0.1℃/0.1℉
Relay Control	2 settable SPST relays
Analog Current Output	2 settable 0/4~20mA?
Communication Method	RS485 interface; MODBUS RTU
Display Screen	128*64 3.2 inch LCD
Time/Data Record	Record 10000 historical data
Maintenance Records	Last 100
Operating Temperature	0～60℃，RH<95%
Storage Temperature	-20～70℃, RH<55%?
Shell Material	Enhanced ABS
Protection Grade	IP66
Dimension	144*144*120mm
Mounting Method	Wall mounting, pipe clamping, panel (hole size 138*138 mm)
Power Supply	100~240V AC or 18~36V DC, 50/60Hz
Power Consumption	7W

Application
Dissolved oxygen controller is usually used in water treatment processes, such as drinking water treatment, sewage treatment, industrial water treatment;
Aquaculture: during the farming of fish, shrimp and other aquatic organisms;
Surface water monitoring: In the study of natural water bodies such as lakes, rivers, and oceans, dissolved oxygen analyzers are used to monitor the dissolved oxygen content of water bodies to assess the health of water bodies, biodiversity, and oxygen ecosystems.