DDS-307 Conductivity Meter (hereinafter referred to as the instrument) is a laboratory conductivity

measuring instrument; it is widely used in petrochemical industry, bio-medicine, sewage treatment,

environmental monitoring, mining, smelting and other industries as well as tertiary institutions and

research institutes. If it is equipped with the conductivity electrode with appropriate constant, it can also

be used for measuring the conductivity of pure water or ultra-pure water in electronic semiconductors,

nuclear power industry and power plants.

• The instrument is featured by four-level range, auto-switching, automatic carry digital display, simple 

operatio and high measurement accuracy. 

• The instrument can measure and display the temperature and conducts temperature compensation 

of the solutio automatically.

• The instrument adopts three-digit liquid crystal digital display; the temperature and the 

measurement values ar displayed simultaneously. Its external shape is beautiful, and its display is clear.

• The user can use the instrument to set the constants of electrodes and the temperature coefficient 

 1.Measuring range: 0-20000 μs/cm; the instrument falls into four scales switched automatically.

2. Intrinsic error of electronic units: ±1.5% (FS) ±1 unit

3. Intrinsic error of the instrument: 2.0%(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. Electrode: DJS-1 Plastic Electrode’s electrode constant: l.0 cm^-1

6. Overall dimension: l x b×h, 200×21 0 X 70 mm

7. Weight: l.0 kg

8. Normal working conditions:

                                                    a) Ambient temperature: 5~50 °C

                                                   b) Relative humidity: No more than 85%

                                                   c) Power supply: AC220V±22V 50HZ ± 0.5HZ

                                                   d) No remarkable vibration

                                                   e) No magnetic field interference except for terrestrial magnetic field