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QT-2208 Dissolved oxygen analyzer (fluorimetric method)

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Keywords: Dissolved oxygen analyzer           

产品介绍

一、Principle of operation

   The fluorescence dissolved oxygen instrument is based on the quenching principle of specific substances in the physics of active fluorescence.The modulated green light shines on the fluorescent material is actviated and then emit red light,the oxygen molecule can take away the energy (quenching effect),so that the time and intensity of the red light is inversely proportional.We used red light and green light synchronization as a reference, the difference between tested activation red light and the reference light ,and compared with the internal calibration value to calculate the concentration of molecular oxygen, and the final output value is compensated by temperature.Dissolved oxygen (DO) is an indicator of water purification capacity. The dissolved oxygen content is higher which indicates   strong ability for water self purification.Conversely, pollutants in water bodies are not easily oxidized and decomposed,anaerobic bacteria will reproduce in large quantities and smelly water .It’s widely used in industry, agriculture, scientific research, environmental protection and other fields.

二、Characteristics


 Small amount of maintenance in fluorescence quenching principle.


No oxygen consumption, no velocity and agitation required.


Free from chemicals such as sulfides.


High resolution and measurement accuracy.


Sensor automatic identification.


Keypad operation is simple.


4~20mA Isolated current output


Higher and lower limitation for alarm relay output.


With full intelligence, multi-function,  high performance and environmental adaptability.

 

三、Technical Specification

Ø  Test performance

    Range:0~20mg/L

   air saturation0~200%

   Accuracy:±0.1mg/L

   Resolution:0.01   mg/L

   Response Time:30s

Calibration:Two-point calibration,field   calibration available

Temperature compensation:   automatic temperature compensation

Display:LCD screen dispaly ,multi parameter   same screen display.

Ø  Signal output

Analog output:4 ~ 20mA (four wire system),   maximum load 750W

Switch output:2 programmable relays can be set   alarm and timer function.

  :AC230V,5A

Relay capacity:AC230V,5A

 

 

Ø  Power Supply

AC220V±10%,50Hz(DC 24V)

Power supply:AC220V±10%,50Hz(DC 24V optional)

Ø  Physical performance

:ABS

 Material:Transmitter: ABS

Sensor: 316 cover / fluorescent polyester cap

Process connection:G1 pipe thread

Assembling method:Bracket type

Cable length:10M(length extending   allowable)

Ø  Surrounding Performance

Protection level:transmitter   IP65

Sensor IP68

Working temperature:

transmitter   -20~55℃

Sensor   0~60℃

Humidity:Relative humidity ≤85%

Process pressure:≤0.3MPa

 

四、Application

 Sewage plant: water testing for regulating reservoir, aeration tank, aerobic / anaerobic digestion tank and factory water etc.Industrial process: monitoring of water quality such as production water and circulating water.Environment testing for rivers, lakes, sea water, fishing grounds, aquaculture and other water environment.

 


Quanzhou quantong optoelectrionics,Monopoly Oil analysis equipme Gas chromatography Diesel cetane number Gasoline octane numb Fungilab Polyester equipment Water quality analys And other business,Interested customers please contact us,Phone:400-1515-112

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