Hach-Lange DR 3800 User Manual - Manual (Page 5)

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Table of Contents
6.2 Favorite Programs ........................................................................................................................................... 85
6.2.1 Recall a favorite program ........................................................................................................................ 85
6.2.2 Delete a favorite program ....................................................................................................................... 85
6.3 Standard Addition – monitoring/checking results ............................................................................................. 86
6.3.1 Complete a standard addition ................................................................................................................. 87
6.4 Single Wavelength (absorbance, concentration and transmittance measurements) ....................................... 91
6.4.1 Set up single wavelength mode .............................................................................................................. 91
6.4.2 Take single wavelength measurements (single reading) ........................................................................ 93
6.4.3 Take single wavelength measurements (continuous readings) .............................................................. 93
6.5 Multi-Wavelength mode – measurements at more than one wavelength ........................................................ 94
6.5.1 Set the reading mode at different wavelengths ....................................................................................... 94
6.5.2 Complete a measurement in the multi wavelength mode ....................................................................... 97
6.6 Wavelength Scan mode – recording of absorbance and transmission spectrums .......................................... 98
6.6.1 Set up the wavelength scan .................................................................................................................... 98
6.6.2 Wavelength scan reading ..................................................................................................................... 101
6.6.2.1 Navigation of the wavelength scan graph or a wavelength scan analysis ................................ 102
6.6.3 Work with reference scans .................................................................................................................... 103
6.7 Time course of absorbance/transmittance ..................................................................................................... 105
6.7.1 Time course setup parameters ............................................................................................................. 105
6.7.2 Time course scan reading ..................................................................................................................... 106
6.7.3 Analysis of time course data ................................................................................................................. 107
6.7.3.1 Navigation of a time scan or a time scan analysis .................................................................... 108
6.8 System checks ............................................................................................................................................... 109
6.8.1 Instrument information .......................................................................................................................... 109
6.8.2 Upgrade of the instrument software ...................................................................................................... 110
6.8.3 Optical checks ....................................................................................................................................... 110
6.8.3.1 Wavelength check .................................................................................................................... 111
6.8.3.2 Noise check .............................................................................................................................. 111
6.8.3.3 Stray light check ....................................................................................................................... 113
6.8.3.4 Absorbance check .................................................................................................................... 114
6.8.3.5 Drift check ................................................................................................................................. 115
6.8.3.6 Verification kit ........................................................................................................................... 116
6.8.4 Output checks ....................................................................................................................................... 118
6.8.5 Lamp history ......................................................................................................................................... 118
6.8.5.1 Factory service ......................................................................................................................... 118
6.8.6 Service time .......................................................................................................................................... 119
6.8.7 Instrument backup ................................................................................................................................ 120
Section 7 Maintenance ...................................................................................................................................... 123
7.1 Cleaning requirements ................................................................................................................................... 123
7.1.1 Spectrophotometer ............................................................................................................................... 123
7.1.2 Display .................................................................................................................................................. 123
7.1.3 Cuvettes/sample cells ........................................................................................................................... 123
7.2 Lamp replacement ......................................................................................................................................... 124
7.3 Filter pad maintenance .................................................................................................................................. 126
7.3.1 Filter pad replacement .......................................................................................................................... 126
Section 8 Troubleshooting ................................................................................................................................ 129
Section 9 Replacement Parts ............................................................................................................................ 131
Section 10 Contact Information ........................................................................................................................ 133
Section 11 Warranty, liability and complaints ................................................................................................. 135
Appendix A Pour-Thru Cell ............................................................................................................................... 137