Water Analysis Solutionswww.hbbossen.com

　　With strong environmental adaptability, clear display, easy operation and excellent measuring performance, the DDG-208 Intelligent On-line Conductivity Meter has very high performance-price ratio. It can be widely used for continuous monitoring of the conductivity values of the solutions used in the following industries: thermal power plants, chemical industry, chemical fertilizer, metallurgy, environmental protection, pharmacy manufacturing, biochemistry, foodstuff and running water.

　　Features

　　Fully intelligent: It adopts high-precision AD conversion and single chip microcomputer processing technologies

　　and can be used for conductivity and temperature measurement, automatic temperature compensation, automatic

　　range switching, self-checking, etc.

　　Multi-parameter display: The conductivity and temperature values can be displayed on the same screen at the

　　same time. It adopts LED display module with high brightness. the displayed values can be seen from

　　a long distance away.

　　Strong interference immunity: Its current output adopts optoelectronic isolating technology. This meter has

　　strong interference immunity and the capacity of long-distance transmission as well as excellent electromagnetic

　　compatibility.

　　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 especially

　　suitable for testing the various water solutions in power plants.

　　Technical Specifications

　　1. Standard: JB/T6855-93 《Industrial Conductivity Meter》

　　2. 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)

　　3. Accuracy: conductivity: ±1.0%FS; temperature: ±0.5℃

　　4. Intrinsic error of electronic units: conductivity: ±0.5%F.S, temperature: ±0 3℃(0～60℃)

　　5. Range for automatic temperature compensation: 0～80℃, with 25℃ as the reference temperature

　　6. Water sample tested: 0～80℃, 0.6Mpa

　　7. Intrinsic error of the instrument: conductivity: ±1.0%F.S, temperature: ±0.5℃(0～60℃)

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

　　9. Repeatability error of the electronic units: ±0.2%FS±1 unit

　　10. Stability of the electronic unit: ±0.2%±l unit FS/24H

　　11. Alarm error of the electronic unit: ≤±3.0%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. Isolated current output: 4~20mA (load<750kΩ)

　　15. Output current error of the electronic units: ≤±l.0%FS

　　16. Alarm relay: AC220V, 3A

　　17. Communication interface: RS485 (optional)

　　18. Power supply: AC 220V±22V, 50Hz±1Hz, DC24V(optional)

　　19. Protection grade: IP65

　　20. Overall dimension: 146 (length) x 146 (width) x 108 (depth) mm; dimension of the hole: 138 x 138mm

　　21. Weight: 0.6kg

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

　　23. The connection tubes for inlet and outlet water: Hard pipe or soft pipe.