Hach-Lange 3798-S sc - Manual (Page 3)

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Table of contents
Section 1 Technical data ............................................................................................................................................... 3
1.1 Technical data for the 3798-S sc conductivity sensor .............................................................................................. 3
Section 2 General information ..................................................................................................................................... 5
2.1 General handling instructions .................................................................................................................................... 5
2.2 Applications ............................................................................................................................................................... 5
2.3 Basic principles.......................................................................................................................................................... 5
2.4 Measuring principle ................................................................................................................................................... 6
Section 3 General safety instructions ......................................................................................................................... 7
3.1 Possible sources of hazards...................................................................................................................................... 7
3.2 Safety symbols .......................................................................................................................................................... 7
3.3 Electrical safety measures and fire prevention measures ......................................................................................... 8
3.4 Chemical safety measures ........................................................................................................................................ 9
3.5 Safety measures related to the flow of sample.......................................................................................................... 9
Section 4 Installation....................................................................................................................................................11
4.1 Connecting sensor cable ......................................................................................................................................... 11
4.2 Mechanical sensor installation................................................................................................................................. 12
4.2.1 Installation dimensions .................................................................................................................................. 12
Section 5 Operation..................................................................................................................................................... 15
5.1 Operating the sc controller ...................................................................................................................................... 15
5.2 Sensor setup ........................................................................................................................................................... 15
5.3 Sensor data logger .................................................................................................................................................. 15
5.4 The commands under SENSOR DIAG.................................................................................................................... 15
5.5 The commands under SENSOR SETUP ................................................................................................................ 16
5.6 Sensor calibration (conductivity) ............................................................................................................................. 17
5.6.1 Calibration in air (ZERO CAL)........................................................................................................................ 17
5.6.2 Calibration in air (ELECTRIC. SPAN) ............................................................................................................ 17
5.6.3 Calibration in the process (PROCESS SPAN)............................................................................................... 17
5.7 Adjusting the Temperature ...................................................................................................................................... 18
5.8 Calibrating two sensors simultaneously .................................................................................................................. 18
Section 6 Maintenance................................................................................................................................................ 19
6.1 Maintenance schedule............................................................................................................................................. 19
6.2 Cleaning the sensor................................................................................................................................................. 19
Section 7 Faults, causes, rectification ...................................................................................................................... 21
7.1 Error messages ...................................................................................................................................................... 21
7.2 Warnings ................................................................................................................................................................ 21
7.3 Important service data ............................................................................................................................................. 22
Section 8 Spare parts .................................................................................................................................................. 23
Section 9 Warranty and liability ................................................................................................................................. 25
Section 10 Contact ...................................................................................................................................................... 27
Appendix A ModBUS Register Information ............................................................................................................. 29