Portable optical oxygen measuring instrument

The FluoMini O2 portable optical oxygen/temperature measuring instrument is designed based on the principle of fluorescence quenching. The optical sensing coating of its sensor consists of two parts, one for measuring temperature and the other for measuring oxygen. Temperature compensation for oxygen measurement can be achieved through the built-in temperature measurement; This technology can be used in closed, non stirred environments. The instrument adopts embedded components to achieve temperature compensation, which is not affected by response time differences, allowing the sensor to be used in rapidly changing environments.

Main features

-Designed based on fluorescence quenching principle, accurate measurement and easy maintenance

-Can measure oxygen in the air and dissolved oxygen in water, while measuring temperature

-Can directly measure soil oxygen content and temperature in the rhizosphere area of plants

-Used to evaluate seed quality and optimal seed receiving period

-The sensor is equipped with a metal protective cover, which is sturdy, durable, and has a long lifespan

-Large data storage capacity, capable of short-term or long-term continuous monitoring and recording

Main parameter

1. Measurement range of O2 in gas: 0-40% Vol (standard condition)

2. Dissolved O2 measurement range: 0-18 ppm (standard condition)

3. Determination range of O2 saturation in water: 0-200% (standard condition)

4. Working temperature: 5-45 ℃

5. Working pressure: 0-1.5 bar absolute pressure

6. Accuracy/Resolution (O2):

Range (0% -1%) -0.1%/0.01%

Range (1% -25%) -0.2%/0.01%

Range (above 25%) -0.1%/0.01% of measured value

7. Accuracy/Resolution (temperature, pressure):

Temperature -1 ℃/0.1 ℃

Pressure -5 mBar/1 mBar

8. Accuracy (dissolved O2):

Range (0-1 ppm) -0.01 ppm

Range (above 1 ppm) -0.1% of measured value

9. Accuracy/Resolution (O2 saturation in water):

Range (0-10%) -0.1%/0.01%

Range (above 10%) -0.1%/0.1% of measured value

10. Response time:

Gas: T90<5 s

Liquid:<60 s (depending on flow rate)

11. Temperature compensation: Yes

12. Drift/Stability:

O2 (<1%):<0.1% per month (operating frequency 0.1Hz)

O2 (1% -25%):<0.2% per month (operating frequency 0.1Hz)

O2 (>25%):<2% per month (operating frequency 0.1Hz)

13. Dissolved O2:<0.2 ppm per month

14. Sampling time:<2 seconds

15. Calibration O2: 1 point or 2 points; Temperature: 1 point

16. Coating lifespan: 6 months to 1 year; Or 500000 measurements (excluding the influence of chemical incompatibility)

17. Digital interface: USB

18. Signal output: USB serial interface

19. Dimensions (l x b x h, in mm): 169 x 62 x 25

20. Weight (in grams): 235

21. Shell material: aluminum, ABS plastic coated

22. Connector: 4-pin M5 male connector

23. Pressure sensor tube (optional): 316 stainless steel, outer diameter 2mm, length 15mm

24. Protection level: IP54

25. Power supply voltage: via USB port (5V,<200 mA)

26. Battery life: 48 hours (5-second interval); 2 weeks (60 second interval)

Basic configuration

Instrument host; Optical oxygen/temperature sensor (with metal protective cover); 2-meter USB cable; Software and manual USB drive; Sensor bracket; Wooden hole digger; A suitcase.

Optional: Non intrusive optical oxygen/temperature sensor with 10 reflective labels.