Hach-Lange SPECTRO COLOR d-8 - Manual (Page 27)

BDA 387/2
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D4 Service and Maintenance
Even a perfected product like spectro-color
®
requires careful handling and a little regular
maintenance.
To clean the housing, use a dry cloth or a mild household cleaner. Do never use solvents like
e.g. naphta, acetone or the like.
The optical parts should only be cleaned by our service personnel. No further maintenance is
required from you.
D4.1 Standard maintenance
Poor measuring accuracy or reproducibility are often due to improper handling of the working
standards. As colour is a surface quality, utmost cleanliness is of vital importance. Even
slight irregularities undetected by the naked eye may cause mismeasurements (nicotine,
dust, fingerprints, scratches). Standards are possible to clean, but with utmost care not the
damage them.
To clean the standards, wipe the surface with a glass cleaning agent and perhaps rub it dry
carefully with a soft tissue.
ATTENTION:
Do not touch the surface with your fingers when cleaning the standard.
The calibration values of the standards remain valid for two years. After this term changes
may occur.
Standard LZM 268 is furnished with a quality certificate in compliance with DIN 55350 part
18, 4.1.2.
D4.2 Input of standard number and calibration values
Attention: The calibration value was input at works. Recalibration is only required
when the white standard is changed!
The calibration data are on the disk identified with „Programm Kalibrierwerte“.
1. Connect the spectro-color ® to the PC with the interface cable.
2. Turn your computer on and wait for the Windows ® 95/NT user screen to appear.
3. Insert the 3 ½ “ installation disk identified „Disk 1/1 LZM268 Standardsatz xxxxxx".