C H A P T E R T H R E E
3-2
Positioning the Instrument on the Reference
The calibration reference consists of a ceramic disk for white
calibration measurements and a trap opening for black
calibration measurements. The instrument shoe fits snuggly in
both positions.
Refer below for proper positioning.
NOTE:
Make sure the calibration reference is clean before use.
Refer to the calibration cleaning procedure in Section Six.
White Reading Position
Black Reading Position
White Ceramic
Disk
Port Opening
Summary of Contents for 939
Page 1: ...939 S P E C T R O D E N S I T O M E T E R Operator s Manual ...
Page 25: ...C H A P T E R T W O 2 8 ...
Page 29: ...C H A P T E R T H R E E 3 4 ...
Page 57: ...C H A P T E R F O U R 4 28 ...
Page 101: ...C H A P T E R S I X 6 4 ...
Page 107: ...C H A P T E R S E V E N 7 6 ...