YANTAI STARK INSTRUMENT CO., LTD.

It has a complete English display and friendly interface. Various parameters can be displayed at the same

time: conductivity, output current, temperature, time and status. Bitmap type liquid crystal display module

with high resolution is adopted. All the data, status and operation prompts are displayed in English. There

is no symbol or code that is defined by the manufacturer.

1.Conductivity measuring range:  0.01~20μS/cm  (Electrode: K=0.01)

                          0.1~200μS/cm  (Electrode: K=0.1)

                            1.0~2000μS/cm (Electrode: K=1.0)

                            10~20000μS/cm (Electrode: K=10.0)

                           30~600.0mS/cm  (Electrode: K=30.0)

2. Intrinsic error of the electronic unit: conductivity: ±0.5％FS, temperature: ±0.3℃

3. Range of automatic temperature compensation: 0~199.9℃, with 25℃ as the reference temperature

4. Water sample tested: 0~199.9℃, 0.6MPa

5. Intrinsic error of the instrument: conductivity: ±1.0％FS, temperature: ±0.5℃

6. Automatic temperature compensation error of the electronic unit: ±0.5％FS

7. Repeatability error of the electronic unit: ±0.2％FS±1 Unit

8. Stability of the electronic unit: ±0.2％FS±1 unit/24h

9. Isolated current output: 0~10mA ( load<1.5kΩ)

              4～20mA (load<750Ω)  (double-current output for option)

10. Output current error: ≤±l％FS

11. Error of electronic unit caused by ambient temperature: ≤±0.5％FS

12. Error of the electronic unit caused by the supply voltage: ≤±0.3％FS

13. Alarm relay: AC 220V, 3A

14. Communication interface: RS485 or 232 (optional)

15. Power supply: AC 220V±22V, 50Hz±1Hz, 24VDC (optional)

16. Protection grade: IP54 , aluminium shell suitable for outdoor use

17. Clock accuracy: ±1 minute/month

18. Data storage capacity: l month (1 point/5 minutes)

19. Saving time of data under a continuous power-failure condition: 10 years

20. Overall dimension: 146 (length) x 146 (width) x 150 (depth) mm; dimension of the hole: 138 x 138mm

21. Working conditions: ambient temperature: 0~60℃; relative humidity <85％

22. Weight: 1.5kg

23. The conductivity electrodes with the following five constants are usable: K=0.01, 0.1, 1.0, 10.0, and 30.0.