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
