introduce
Hongxin has launched a new generation of online fluorescence based dissolved oxygen sensor, which adopts internationally leading fluorescence lifetime technology. RS485 output, supports MODBUS, maintenance free, can quickly and accurately measure dissolved oxygen content, built-in temperature sensor, with automatic water temperature compensation function. Capable of providing stable, highly reproducible, and sensitive dissolved oxygen monitoring results.
Measurement principle
The fluorescence method dissolved oxygen analyzer is based on the quenching principle of specific substances on active fluorescence in physics. Blue light emitted from a light-emitting diode (LED) illuminates the fluorescent material on the inner surface of the fluorescent cap. The fluorescent material on the inner surface is excited and emits red light. By detecting the phase difference between the red and blue light and comparing it with the internal calibration value, the concentration of oxygen molecules is calculated, and the final value is automatically compensated by temperature and pressure.
Sensor characteristics
Digital sensors,RS485Output, supportMODBUS
No film, no electrolyte required, no interference, no need for frequent calibration
No oxygen consumption, no flow rate limitation
Built in temperature sensor, automatic temperature compensation
Technical Parameter
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name
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parameter
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Range of measurement
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0~20mg/Lperhaps0~200%saturation
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accuracy
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1%
|
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response time
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10 sec
|
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sensor drift
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<1% per year
|
|
temperature sensor
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NTC
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temperature range
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0 ~ 50℃
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|
Temperature Accuracy
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±0.2℃
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protection grade
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IP68
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Maximum operating pressure
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6bar
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sensor interface
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supportRS-485，MODBUSagreement
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assemble
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6Divided into cylindrical threads,Immersion installation
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power information
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DC 6~12V, current<50mA
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Sensor Size
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Φ26*177.5 mm
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Probe cable length
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10mAdditionally, customers have the option to choose5m、15mand30mcable
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|
calibration
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One or two point calibration
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Fluorescent cap lifespan
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Guaranteed use for one year (under normal use)
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sensor material
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POMOr stainless steel
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ordering information
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model
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describe
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H502-A
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Online fluorescence dissolved oxygen sensor, hanging ring type
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H504-A
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Online fluorescence dissolved oxygen sensor,6Split cylindrical thread
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H610-A
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Online transmitter, can be connected to Yushan digital sensor, with one digital input; two-way4-20mAAnalog output; One digital output
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Optional Accessories
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model
|
describe
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H9002
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Online dissolved oxygen fluorescent cap. Under normal use, it is recommended to replace the fluorescent cap once a year
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