Fluorescence method dissolved oxygen analyzer

Fluorescence Method Dissolved Oxygen Analyzer is based on the principle of fluorescence quenching, blue light irradiates to the fluorescent material to make the fluorescent material excitate red light, because the oxygen molecules can take away the energy (quenching reaction), the time and intensity of red light and the concentration of oxygen molecules are inversely proportional. By measuring, the phase difference is excitated between the red light and the reference light, then to calculate the concentration of oxygen molecules by corresponding to the internal calibration value. By adopting innovative new fluorescent technology, no membrane and electrolyte is needed, almost no maintenance, excellent performance, easy to operate, no oxygen consumed, can be applied to any occasion, including those low water cycle.


Application:
Waste water Treatment
Surface Water
Aquaculture


Features

●Optical principle: no need to replace the membrane and electrolyte, no flow requirements

●No signal drift, no calibration required

●Using ARM system, more stable and reliable

●Lattice display, Chinese and English menu

●2 routes of 4-20mA current/ RS485 output

●Stainless steel electrodes, more rugged and reliable

●Air cleaning device is optional

Technical Data

Measuring parameter

Measuring range: 0 - 20.00ppm / 0 - 200%, 0 - 60℃

Resolution: 0.01ppm / 1%, 0.1℃

Accuracy: ±0.1ppm or ±1%

Input

Measuring sensor: innoSens 450 optical DO sensor

Output


Analog Output 1:


4-20 mA isolated current output for Dissolved Oxygen, it can be made to represent any segment of the measuring scale
Load: Max 600Ω

Analog Output 2:
4-20 mA isolated current output for TEMP., it can be made to represent any segment of the measuring scale
Load: Max 600Ω
Relay 1&2 (Alarm)
Operation: ON/OFF
Selectable action : High / Low
Set Point: High/10.00 ppm; Low/4.00 ppm (adjustable)
Hysteresis: 0.01 ppm (adjustable)
Relay contacts: 5A/250VAC;5A/30VDC
Relay 3 (Washing Relay):
Wash interval: 0.1~1000hour
Wash time: 1~1000s
Relay contacts: 5A/250VAC;5A/30VDC
Interface: RS 485 Modbus RTU
Baud rate: 9600 bps
Data format: 8 bit


General Information

Power supply: 90 - 260V AC, 50/60Hz; 24VDC(Optional)
Temperature: Operating temperature: 0 - 60 ℃; Storage temperature: -20 - 70 ℃
Humidity: Max. 90% rH at 40℃ (non-condensing)
LCD display: Dissolved oxygen value, temperature value and relay status
Language: Chinese / English
Passcode: Set mode: 0022, Calibration mode: 0011
Protection grade: IP65
Dimensions: 160 * 166 * 73mm
Installation: Wall Mounting
Weight: 1Kg
Sensor Information
Type: innoSens 450
Material: 316L
Size: Diameter 33.5 mm, length 197 mm, connection 3/4”BSP
Cable: 10 m
Max. Pressure: 4 bar
Protection grade: IP68