Online Fluorescence Dissolved Oxygen Analyzer
LDO5500 Fluorescence Dissolved Oxygen Analyzer
LDO5500 Fluorescence Dissolved Oxygen Analyzer
Fluorescence industrial online dissolved oxygen meter is an online water quality monitoring and control instrument with microprocessor. The instrument is equipped with fluorescence dissolved oxygen sensors. It is widely used in power plants, petrochemical industry, environmental protection water treatment, aquaculture and other industries.
Fluorescence industrial online dissolved oxygen meter is an online water quality monitoring and control instrument with microprocessor. The instrument is equipped with fluorescence dissolved oxygen sensors. It is widely used in power plants, petrochemical industry, metallurgical electronics, mining, paper industry, food and beverage industry, environmental protection water treatment, aquaculture and other industries. The dissolved oxygen value and temperature value of water solution are continuously monitored and controlled.

90*50 mm Large color LCD display
Data Recording /Curve display/Data upload function
Multiple automatic calibration
Double high resistance measurement mode, stable and reliable
Manual and automatic temperature compensation
Three relay control switches
High & low alarm and hysteresis control
4-20mA x2 &RS485 Multiple output modes
Multi parameter display simultaneously shows
Password protection to prevent misoperation by non-staff
Measurement range 0-20mg/L; 0-100%;
Measurement unit mg/L, %
Resolution 0.01mg/L; 0.1%
Basic error ±1%F.S
Temperature 0~50℃
Temperature Resolution 0.1℃
Temperature Basic error ±0.3℃
Current outputs Two 4~20mA,20~4mA,0~20mA
Signal output RS485 MODBUS RTU
Other functions Data record &Curve display
Three relay control contacts 5A 250VAC,5A 30VDC
Optional power supply 85~265VAC,9~36VDC,power consumption≤3W
Working conditions No strong magnetic field interference around except the geomagnetic field.
Working temperature -10~60℃
Relative humidity ≤90%
Waterproof rating IP65
Weight 1.0kg
Dimensions (W*H*D) 235×185×120mm
Installation methods Wall Mounting
CS4760D Fluorescence Dissolved Oxygen 【Download】
The dissolved oxygen sensor uses fluorescence method to measure dissolved oxygen. The blue light emitted shines on the fluorescent layer, and the fluorescent material is excited to emit red light.
The oxygen concentration is inversely proportional to the time when the fluorescent material returns to the ground state .
When this method is used to measure dissolved oxygen, there is no oxygen consumption during measurement, the data is stable, the performance is reliable, there is no interference, and the installation and calibration are simple.
The product is widely used for dissolved oxygen monitoring in sewage plants, waterworks, water stations, surface water, aquaculture, industry and other fields.
Replaceable membrance cap MS4760
Power/Outlet 12VDC/RS485 MODBUS RTU
Measure methods fluorescence method
Housing material POM+ Stainless steel
Waterproof grade IP68
Measurement range 0-20mg/L
Accuracy ±1%F.S
Pressure range ≤0.3Mpa
Temperature compensation NTC10K
Temperature range 0-50ºC
Measuring/Storage Temp. 0-45ºC
Calibration Oxygen Free Water Calibration and Air Calibration
Connection methods 4 core cable
Cable length Standard 10m cable, can be extended to 100m
Installation thread Upper NPT3/4''
Application General application, river, lake, drink water, environmental protection, etc.
CS4750D Fluorescence Dissolved Oxygen 【Download】
The dissolved oxygen sensor uses the fluorescence method to measure the dissolved oxygen, and the blue light emitted shines on the fluorescent layer.
When excited, the substance emits red light, and the oxygen concentration is inversely proportional to the time when the fluorescent substance returns to the ground state. This method can measure dissolved oxygen without oxygen consumption, with stable data, reliable performance, no interference, and simple installation and calibration.
Measuring principle Fluorimetry
Measuring range 0~20.00mg/L
resolving power 0.01mg/L , 0.1℃
Measurement accuracy ±2%F.S. , ±0.3℃
Temp. compensation Automatic temp. comp. (Pt1000)
Output mode Rs-485, MODBUS/RTU protocol
Working conditions 0~50℃ , <0.2MPa
Storage temperature -5~65℃
Installation method Immersion installation
Cable length Standard configuration: 10m, customizable
power waste 0.3W@12V
Supply voltage 12~24VDC
Degree of protection IP68
Calibration method Two point calibration
Head life 1 year (under normal use)
Shell material POM and 304 stainless steel
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