The instrument can be used for the measurement of dissolved oxygen concentration,

saturation, electrode current and temperature. It adopts the microprocessor

technology and wide-screen LCD display. At the same time, it also owns

the operation prompts, making operation simple and convenient.                        

 ♦ It is available with automatic temperature compensation. It is also

featured by zero oxygen, full-scale, air pressure, power-off protection

and other functions.

♦ It is with the power-off protection function.
♦ The instrument adopts the low-power consumption design, with

low-voltage display, automatic shutdown and other power

management functions.
♦ The protection grade of the instrument casing is lP65. It is waterproof,

dustproof and suitable for field work.
♦ It is equipped with the dissolved oxygen electrode (polarographic

membrane oxygen) made by our factory.                                           

 1. Measuring range: dissolved oxygen: 0.00-19.99mg/L

Dissolved oxygen saturation: 0.0 - 199.9 %
Temperature: 0 .0 - 60.0 °C
2. Automatic temperature compensation: 0~60°C
3. Intrinsic error of the instrument:
Dissolved oxygen: ± 0.1 ug/L ± 1 unit (at the calibration temperature)

± 0.5ug/L (when the difference is ± l 5 °C, compared with the calibration

temperature)
Dissolved oxygen saturation: ± 0 5 0% (at the calibration temperature)

± 1.0% (when the difference is ± l 5 °C, compared with the calibration

temperature)
Temperature: ± 0 .5 °C ± l unit
4. Residual current: 0.1 ug/L
5. Response time: 20s (at 20 °C, 90% response)
6. Instrument stability: ± 0.2ug/L/1h
7. Instrument repeatability: 0.2ug / L
8. Instrument weight: 0.3kg
9. Overall dimension: 210 ×100 ×45mm
10. Normal operating conditions of the instrument
a) Ambient temperature: (0 - 40) °C
b) Environmental adaptability: In line with the shell protection grade IP65

c) Measured solution temperature: (0 - 40) °C
d) Power supply: One 9V battery
e) Except for the geomagnetic field around, there is no other vibration

affecting the performance.