Crystal DataLoggerXP Digital Pressure Gauge Software User Manual
Page 17
Data Logging with DataLoggerXP
15
XP2i Operation Manual
data Logging Parameters
Logging parameters can be set up one of two ways: on a computer connected to an XP2i, or from the XP2i keypad. This second option allows the user to make
changes in the logging parameters while in the field. Once the logging parameters have been selected, the gauge can begin recording data. The two param-
eters that affect data logging (logging interval and logging type) are covered below.
X
Logging Interval
The logging interval controls how frequently the gauge takes a measurement. XP2i data logging features a minimum recording time of 1 second and a
maximum recording time of 18 hours.
X
to choose a Logging type
From the Logging Type drop-down list, choose a logging type.
The gauge may operate in five logging types:
•
Actual:
The gauge stores the value displayed on the gauge at each logging interval.
•
Average:
The gauge calculates and stores the average of all readings taken (4 per second) during each logging interval. For example, if the recording interval
is 10 seconds, the logged value is the average of the last 40 readings (10 seconds x 4 readings/second).
•
Average with Peaks:
The highest and lowest value of each logging interval is recorded along with the average value.
•
On Demand:
This mode differs from the other three, in that the logging interval does not apply. Press the
(
peak
)
button to store the displayed pressure
value and the current timestamp.
•
Actual-ULP:
Similar to Actual; Ultra-Low Power mode extends recording time to over an entire year on one set of batteries. The gauge will display ULP
instead of the live pressure. Stop the recording to view the live pressure display.