Hach Lange 2100AN, Instrument Manual

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TABLE OF CONTENTS
TRADEMARKS OF HACH COMPANY ....................................................................................................................... 2
SAFETY PRECAUTIONS .............................................................................................................................................. 7
OPERATION
................................................................................................................................................................. 9
SECTION 1 GENERAL DESCRIPTION
........................................................................................................... 11
1.1 Instrument Description ............................................................................................................................................. 11
1.2 Standard Accessories................................................................................................................................................ 11
1.3 Principle of Operation .............................................................................................................................................. 11
1.4 Preparation for Use................................................................................................................................................... 12
1.4.1 Unpacking....................................................................................................................................................... 12
1.4.2 Operating Environment................................................................................................................................... 13
1.4.3 Operating Power Selection ............................................................................................................................. 13
SECTION 2 TURBIDITY MEASUREMENT
................................................................................................... 15
2.1 Operating Controls and Indicators ........................................................................................................................... 15
2.2 Measuring Turbidity................................................................................................................................................. 15
2.2.1 Nephelometric Measurement Procedure......................................................................................................... 16
2.2.2 Measurement Hints......................................................................................................................................... 17
2.3 Measurement Techniques ......................................................................................................................................... 18
2.3.1 Cleaning Sample Cells.................................................................................................................................... 18
2.3.2 Applying Silicone Oil ..................................................................................................................................... 18
2.3.3 Preparing Dilution Water ................................................................................................................................ 19
2.3.4 Indexing and Matching Sample Cells............................................................................................................. 20
2.3.5 Removing Air Bubbles (Degassing) ............................................................................................................... 23
2.3.6 Signal Averaging............................................................................................................................................. 25
2.3.7 Measuring Over-Range Samples .................................................................................................................... 26
2.3.8 Condensation (Fogging) ................................................................................................................................. 29
2.3.9 Calibration Check ........................................................................................................................................... 29
2.3.10 Representative Sampling .............................................................................................................................. 30
SECTION 3 OPERATION
...................................................................................................................................... 31
3.1 Operational Controls and Indicators ........................................................................................................................ 31
3.1.1 Using the
RANGE
Key..................................................................................................................................... 33
3.1.2 Using the
UNITS/EXIT
Key .............................................................................................................................. 33
3.1.3 Using the
SIGNAL AVG
Key ............................................................................................................................ 34
3.1.4 Using the
FLOW
Key ....................................................................................................................................... 34
3.1.5 Using the
LINE FEED
Key ............................................................................................................................... 34
3.1.6 Using the
RATIO
key ....................................................................................................................................... 34
3.1.7 Using the
PRINT
Key....................................................................................................................................... 35
3.1.8 Using the
CAL/ZERO
Key................................................................................................................................ 35
3.1.9 Using the
ENTER
Key ..................................................................................................................................... 35
3.1.10 Using the Arrow Keys .................................................................................................................................. 35
3.1.11 Using the
SAMPLE
Key................................................................................................................................. 36
3.1.12 Using the
SETUP
Key ................................................................................................................................... 36
3.1.13 Key Annunciator Tone (Beeper) ................................................................................................................... 36