Fluorescence Dissolved Oxygen Meter

Product Introduction:

The fluorescence dissolved oxygen meter is based on the principle of quenching active fluorescence by specific substances in physics. The modulated green light is irradiated on the fluorescent substance to excite it and emit red light. Since oxygen molecules can take away energy (quenching effect), the time and intensity of the red light excitation are inversely proportional to the concentration of oxygen molecules. We use a red light source synchronized with the green light as a reference, measure the direct phase difference between the excited red light and the reference light, and compare it with the internal calibration value to calculate the concentration of oxygen molecules, and output the final value after temperature compensation. It is widely used in tap water, sewage, petroleum, chemical industry, breeding, metallurgy, electricity, food, pharmaceuticals, papermaking, agricultural irrigation, domestic water, mining and other industries.

Product features:

1. LCD screen Chinese interface display, simpler and more convenient operation;

2. Imported TI chip and anti-interference circuit are used, with higher accuracy and more stability;

3. Photoelectric isolation 4~20mA current output, RS-485/RS2-232 communication interface;

4. The function of arbitrary setting of hysteresis value can avoid frequent operation of switch relay;

5. The system has built-in watchdog function, and the power-off protection is greater than 10 years;

6. Dual relay upper and lower limit alarm output;

7. The sensor has built-in temperature compensation, which can correct the influence of temperature on dissolved oxygen value;

8. Physical measurement, no consumption of electrolyte, no regular maintenance required

9. Support customization of special function requirements;

7. Unique protective cover design to prevent the cap membrane from hitting hard objects and causing irreversible damage during the use of the sensor;

Technical parameters:

Measurement range: - 20mg/L or 0-20ppm;

Resolution: 0.01mg/L or 0.01ppm;

Power supply voltage: AC220, DC24V, input power ≥5W;

Output RS485, 4~20mA, relay (optional), HART protocol (optional), NB/GPRS/LORA communication (optional);

Protection level: IP65 (host)/IP68 (sensor);

Working temperature: 0~60℃ (no freezing);

Storage temperature: -10~60℃;

Installation method: top type/top flange type/side wall type/pipe type/immersion type/flow type installation;

Dimensions: wall-mounted 156mm×150mm×85mm;

Opening size: wall-mounted 156mm×94mm;

Cable length: standard 10 meters (customizable extension);

Product's Website：http://en.huoerd.com/zxbgs/1624.html