RY-CRY/485 integrated on-line fluorescence dissolved oxygen sensor is designed and manufactured based on the quenching principle of excited fluorescence by specific substances in physics. The blue light emitted by light emitting diode (LED) irradiates on the fluorescent substance on the inner surface of the fluorescent cap. The fluorescent substance on the inner surface is excited and emits red light. By detecting the phase difference between red light and blue light, and comparing with the internal calibration value, the concentration of oxygen molecule is calculated, and the final value is output through automatic temperature compensation.

SPECIFICATIONS

Model	RY-CRY/485
Principle	Fluorescence method
Measuring Range	0～20mg/L(0～200% saturation,25℃)
Resolution	0.01mg/L,0.1℃
Accuracy	±2%F.S.,±0.5℃
Temperature Compensation	Automatic temperature compensation(Pt1000)
Output	RS-485 Modbus-RTU
Work Environment	0～45℃,<0.2MPa
Storage Temperature	-5～65℃
Installation	Immersion installation
Cable length	5m, other lengths can be customized
Power Waste	<0.05W
Power Supply	12～24VDC ±10%
Ingress Protection	IP68
Calibration	Two point calibration
Lifetime of fluorescent cap	One year (proper use)
Sensor housing material	POM and 316LSS

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On Line Fluorescence Dissolved Oxygen Sensor