20
4 - OPERATION
Martek Instruments, Inc.
and the "1" will be flashing. Use the arrow
keys to change the number of complete read-
ings the Mark 22 will make during each scan
period. Upon completion, the Mark 22 will
return to the set up menu.
NOTE: The time remaining in memory is deter-
mined by the number of scans and the period
between scans. The Mark 22 can hold a total of
371 scans.
For example, if the period between recordings is
set for 30 minutes and the number of scans is set
for 2, then there are 4 scans per hour.
371/4 = 92.75
The total logging time is 92.75 hours. The time
remaining will be displayed as 92.8 hours when
first starting to log.
4.2.3 How to Log data
One of the most convenient features of the
Mark 22 is its ability to log monitored data
into memory and then down-load this data
to either personal computers or printers. In
addition, the Mark 22 can be programmed
to start logging at a pre-determined time and
interval for unattended monitoring of key
process lines.
To set up the Mark 22 for logging, press
the
SETUP
key and select the LOG option.
The Mark 22 will display the following:
The STARTING TIME is used to set the
logging function to begin at a predetermined
time. Use the arrow keys to change the indi-
vidual digits and use the select key to enter
them. Upon completion, the Mark 22 will
automatically prompt on PERIOD.
When PERIOD is selected, the Mark 22
will display the following:
Entering any value between 1 and 255
minutes will set the amount of time between
recorded measurements when logging.
When # SCANS is selected, the display
will read as follows:
STARTING TIME
PERIOD # SCANS
INPUT LOG PERIOD
IN MINUTES 1-255
INPUT # OF SCANS
(1-9)
1
