Michell Instruments MDM300 I.S, User Manual

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MDM300 I.S. User’s Manual
Michell Instruments 31
OPERATION
The display shows:
#
Indicates a log number for each set of log points
INT
Value of primary display parameter
EXT
Value of secondary display parameter
ST
Status column which reports the status of the instrument at each log
point in hexadecimal code.
The status codes are explained in Appendix B.
•
FILE
File name
•
INT
Primary display parameter being logged
•
EXT
Secondary display parameter being logged
•
INTVAL
Logging interval
•
D#
Current date in YYMMDD format
•
T#
Current time in HHMMSS format
NOTE: The chart and datalogging are independent functions; therefore the
parameter displayed on the chart may not necessarily reflect what is being
logged.
3.4.11 CALIBRATION
!
WARNING: These procedures require the use of specialized
test equipment and calibration adjustments should only be
carried out by qualifi ed personnel.
POINT
CALIBRATION
-100
-90
-80
-70
-60
REF
-100.0
-90.0
-80.0
-70.0
-60.0
MDM300
-100.0
-90.0
-80.0
-70.0
-60.0
Figure 26 CALIBRATION Page
Entry to the CALIBRATION Menu is protected by a passcode (
4876
). The passcode is
entered in a similar manner to that described in Section 3.3.1.
This page gives access to the internal sensor’s calibration look-up table and provides the
facility to select and change any single point, or number of points.
The values in both the
REF
(reference dew-point) and
MDM300 I.S.
(reading at the
corresponding
REF
level input) columns can be edited.
Section 6 details the use of the calibration routines.