Hach-Lange 1200-S sc - Manual (Page 3)

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Table of contents
Section 1 Specifications .............................................................................................................................................. 3
1.1 Technical data on the 1200-S sc - pH / ORP sensor................................................................................................. 3
Section 2 General information ..................................................................................................................................... 5
2.1 General handling instructions .................................................................................................................................... 5
2.2 Applications ............................................................................................................................................................... 5
2.3 Measuring principle ................................................................................................................................................... 5
2.3.1 pH measurement ............................................................................................................................................. 5
2.3.2 REDOX measurement ..................................................................................................................................... 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 the 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 (pH) ........................................................................................................................................... 17
5.6.1 Calibration using a buffer solution.................................................................................................................. 17
5.6.2 Calibration using two buffer solutions ............................................................................................................ 17
5.6.3 Calibration using a sample solution ............................................................................................................... 18
5.6.4 Calibration using two sample solutions .......................................................................................................... 18
5.7 Sensor calibration (REDOX).................................................................................................................................... 18
5.8 Sensor calibration (temperature) ............................................................................................................................. 19
5.8.1 Calibrating two sensors simultaneously ......................................................................................................... 19
Section 6 Maintenance................................................................................................................................................ 21
6.1 Maintenance schedule............................................................................................................................................. 21
6.2 Cleaning the sensor................................................................................................................................................. 21
6.3 Changing electrode ................................................................................................................................................. 21
Section 7 Faults, causes, rectification ...................................................................................................................... 23
7.1 Error messages ...................................................................................................................................................... 23
7.2 Warnings ................................................................................................................................................................ 23
7.3 Important service data ............................................................................................................................................. 24