DDG-3080B Industrial online Conductivity Meter

Features

u  Intelligent: This Industrial Conductivity meter adopts high-precision AD conversion and single chip microcomputer processing technologies and can be used for the measurement of the conductivity values and temperature, automatic temperature compensation and self-checking.

u  High Reliability: All the components are arranged on one circuit board. No complicated functional switch, adjusting knob or potentiometer arranged on this instrument.

u  Strong interference immunity: Its current output adopts optoelectronic isolating technology. This meter hasstrong interference immunity and the capacity of long-distance transmission as well as excellent electromagneticcompatibility.

u  Water proof and dust-proof design: Its protection grade is IP65. It is applicable for outdoor use.

u  25℃ Conversion: The conductivity value measured at the current temperature is converted to that at 25℃;thus, this conductivity meter always displays the conductivity value at 25℃. Therefore, this meter is especiallysuitable for testing the various water solutions in power plants.

u  Automatic range switching: The measuring ranges can automatically switch within the measuring range of theelectrode.

u  Communication interface: RS485, It can be easily connected to a computer to perform monitoring and communication

u  Phase sensitive detection: Eliminating the influence of conductors on the measurement of conductivity.

Technical indexes

1. Standard: JB/T 6855-93 <<Industrial conductivity meter >>

2. Measuring range:  0.01~200μS/cm  (k=0.01)

0.1~2000μS/cm  (k=0.1)

1.0~20 mS/cm  (k=1.0)

10~200 mS/cm  (k=10.0)

3. Intrinsic error of the electronic unit: conductivity: ±0.5%FS, temperature: ±0.2℃

4. Range of automatic temperature compensation: 0~200.0℃, with 25℃ as the reference temperature

5. Water sample tested: 0~200.0℃, 1.6MPa

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

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

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

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

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

4~20mA (load<750Ω)

11. Output current error: ≤±l%FS

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

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

14. Alarm relay: AC 220V, 3A

15. Communication interface: RS485

16. Power supply: AC 220V±22V, 50Hz±1Hz

17. Protection grade: IP65

18. Clock accuracy: ±1 minute/month

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

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

21. Overall dimension: Wall hanging or DIN rail mounting; 220 (length) x 190 (width) x 130 (depth) mm

22. Weight: 1.0kg

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

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