M A - 5 Q C S P E C T R O P H O T O M E T E R
20
CALIBRATION MODE
The instrument must be calibrated on the white tile every 21 days. No measurements are possible with an
expired calibration. A warning message appears at power up 3 days before the calibration is required.
Refer to the Cleaning section in the Appendices for information on cleaning the calibration reference.
NOTE:
Make sure to use the calibration reference supplied with the instrument for calibrating. Do not
substitute this reference with a reference from another instrument. The serial number on the reference
should match the reference serial number displayed on the instrument calibration screen.
Calibration Notes
•
Calibration should be performed at room temperature (best measurement performance when calibrated
at 23°+/-1°C (73°+/-2°F) and 40-60% relative humidity).
•
The
white tile in the calibration reference is severely affected by smudge marks, dust, and finger
prints
. Refer to Appendices for calibration reference cleaning procedures.
•
Do not move instrument while taking a calibration measurement
. If motion is detected by the
contact sensors, an error message will be displayed and calibration aborted.
•
Make sure the USB cable is unplugged from the instrument before performing a calibration.
Calibration Reference
The calibration reference is designed to keep the white tile free of dust and debris.
Calibrating the Instrument
1.
Select the
Calibration
option from the Settings menu as previously explained (see Entering Settings Mode).
The message “Calibration expired” appears if the instrument needs to be calibrated. If calibration is not
currently needed, the time remaining before the next calibration appears. To exit the calibration mode
without calibrating, tap the Left (
◄
) arrow at the bottom of the screen.
2.
Open the calibration reference and lay it flat. Position the instrument measurement port (1) over the white
tile (2) by locating the two pins (3) in the calibration reference into the holes in the measurement base.
NOTE
: The pins are keyed and will only insert in one direction.
White tile
Alignment pin
Alignment pin
(1)
(3)
(3)
(2)
