Operator`s manual

21X MICROLOGGER OVERVIEW
OV-15
Display Shows
Key (ID:Data) Explanation
*5 00:21:32 Enter *5 mode. Clock running but not set correctly.
A 05:89 Advance to YEAR location.
90 05:90 Key in current year (1990).
A 05:0076 Enter and advance to day of year.
197 05:197 Key in day of year. The 21X Prompt Sheet has a
day of year calendar.
A 05:00:21 Enter and advance to hour and minute.
1324 05:1324 Key in hrs:min (1:24 PM in this example).
A :13:24:01 Clock set and running. (:HR:MIN:SEC)
Now that the clock is set, we will erase Final Storage so that any data from the first example will not
be confused with this data. The *A Mode is used to repartition memory between Input, Intermediate,
and Final Storage. Final Storage is erased when memory is repartitioned, even if the same sizes
are retained (Section 1.5).
Display Shows
Key (ID:Data) Explanation
*A 01:0028 There are 28 Input Storage locations.
28 01:28 "Change" to 28 locations
A 02:0064 Enter 28, display no. of Intermediate loc.
*0 :LOG 1 Exit *A, enter *0, compile Table 1
and commence logging data.
The 21X is now programmed to measure the
panel and TC temperatures every 5 seconds.
Every hour there will be 3 values output: 1) the
output array ID, 103 (3rd instruction in Table 1
set the Output Flag), 2) time, and 3) average of
the thermocouple readings that occurred in the
previous hour.
Every day there will be 7 values output: 1)
output array ID, 106 (6th instruction in Table 1
set the Output Flag), 2) day, 3) time, 4)
maximum TC temperature that occurred in the
previous day, 5) time at which the maximum
occurred, 6) minimum TC temperature, and 7)
the time at which the minimum occurred.
OV5. DATA RETRIEVAL OPTIONS
There are several options for data storage and
retrieval. These options are covered in detail in
Sections 2, 4, and 5. Figure OV5-1
summarizes the various possible methods.
Regardless of the method used, there are three
general approaches to retrieving data from a
datalogger.
1. On-line output of Final Storage data to a
peripheral storage device. On a regular
schedule, that storage device is brought
back to the office/lab where the data is
transferred to the computer. Another
storage device is usually taken into the field