March 2008
3-6 Logging Data
LOG TIME Prompt If TIMED was selected at step 12, the programming sequence continues
here.
15.Use the [←], [→] and
[F1]-[F4] keys to select the desired log
duration.The available options at this prompt are: 10min, 30min,
60min, 3 HR, 6 HR, 12 HR and 24 HR.
Proceed directly to the
TIME INCREMENT prompt.
TIME INCREMENT Prompt Regardless of which of the various options were selected during the
previous programming steps, all of the paths converge at this point.
16.Use the [←], [→] and
[F1]-[F4] keys to select the desired Time
Increment. The available options at this prompt are: 5sec, 10sec,
30sec, 1min, 3min, 6min, 12min, 30min and 60 min.
The time increment is the frequency at which the Model DF868 takes
and records data measurements. If any reading takes longer than the
programmed time increment, the log is filled in with the next
consecutive reading. For example, assume that a velocity value of 3
ft/sec is recorded at 12:00:00 in a log with a time increment of five
seconds. If the next reading is 8 ft/sec and it takes the meter 12
seconds to read this value, then both of the missed readings (12:00:05
and 12:00:10) will be filled in with the 8 ft/sec value.
Procedure Options You have completed entering data for a standard log. You can now do
one of the following:
• Use [↑] and [↓] to review the previous menu prompts.
• Press [F1]-[F4] to select one of the submenus.
• To return to the data screen and begin logging data, press the [ENT]
key.
Although each log is restricted to only three logged parameters, it is
still possible to log more than three parameters. Simply re-enter the
STD submenu as many times as necessary to set up additional logs.
Select the other desired parameters, and run these logs simultaneously
with the first log.
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