Crystal DataLoggerXP - Manual (Page 12)

DataLogger
XP
User’s Manual • Page
C R Y S T A L e n g i n e e r i n g
c o r p o r a t i o n
„ Data.Logging.Parameters
The two parameters that affect data logging (logging interval and logging type) are covered below.
LOGGING INTERVAL
The logging interval controls how frequently the gauge takes a measurement. A logging interval
can be as short as one second or as long as eighteen hours.
LOGGING TYPE
There are four logging types in which the gauge is capable of operating:
•
Actual: The gauge stores the value displayed on the gauge at each logging interval. No averag-
ing is performed.
•
Average: The gauge stores the average of all readings taken during the entire logging interval.
•
Average with Peaks: Similar to Average, except the highest and lowest value throughout the
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. Instead, data is stored whenever the PEAK button on the XP2i is pressed. Each time the
PEAK button is pressed, the displayed value is stored with a timestamp of when it was pressed.
MAXIMUM NUMBER OF READINGS
The number of readings that can be stored on the XP2i is dependent on three factors: free memo-
ry, the logging type, and pressure dynamics.
Free memory can be determined by simply holding down the UNITS button until the available
memory is displayed. Note that if the gauge contains any data, the free memory will be lower than
the valued displayed on a cleared gauge.