SHB_U14 Chapter 3: Module components 3-13
Calibration unit
Location in module
The calibration unit is an installable option.
It is inserted between the sample cell and infrared detector.
Structure
The calibration unit is a motorized shifting device for the calibration cells.
A small drive motor with a drive pin moves the slide on which the calibration cell is
mounted.
Small permanent magnets are used to improve calibration cell positioning and
attachment.
An attachment using two U mounts makes it possible to have a difference in width
between the versions with and without optical filters.
Figure 3-15
Calibration unit
1 Calibration cell
2 Circuit board plug connection
3 Drive motor
4 and 5 Permanent magnets
6Slide
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