DDBJ-305 portable conductivity meter is an instrument used for the measurement of the conductivity of

aqueous solution in the laboratory. It is widely used in electric power plants, petrochemical industry,

bio-medicine, sewage treatment, environmental monitoring, mining and smelting and other industries as well

as tertiary institutions and research institutes. If equipped with conductivity electrode with the appropriate

constant, it can also be used to measure the conductivity of pure water or ultra-pure water in electronic

semiconductor or nuclear power industry and power plants.

 ♦ It is featured by fourth-scale range, auto-switching and automatic carry digital display, with simple

operation and high measurement accuracy.

♦  It adopts four AA batteries for power supply, easy to carry and suitable for field use in the wild.
♦ It adopts three-digit large LCD digital display, displaying the electrical conductivity and the temperature

simultaneously. Its external shape is beautiful and its display is clear.
♦ The constant of the electrode and the temperature coefficient of the solution can be set.
♦ Equipped with the titanium alloy electrode and the airtight measuring cell with the conductivity constant

of 0.01 cm-1, it is suitable for the measurement of high-purity water.

1. Measuring range: 0~1999 μS/ cm

2. Intrinsic error of electronic units: ±2.0%(FS) ±1 unit
3. Intrinsic error of the instrument: 5%(FS)±1 unit
4. Temperature compensation range: 5~50 °C, with 25°C as the reference temperature
             Temperature display range: 0~ 60°C
                     Medium temperature: 5~50 °C
5. Auxiliary electrode: DJS-1 plastic electrode
   Electrode constant: 1.0 cm-1
6. Overall dimension: l35 x 75 x25 mm
7. Weight: 0.3kg
8. Normal working conditions:
a) Ambient temperature: 5-50 °C
b) Relative humidity: No more than 85%
c) Power supply: 4 AA batteries
d) No remarkable vibration
e) No magnetic field interference except for terrestrial magnetic field