TSI Instruments Q-Trak XP - Appendix B Definitions

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APPENDIX B
Definitions
Out-of-Range
(Calibration)
An Out-of-Range error during the calibration of a
sensor means the sensor’s offset or calibration
slope adjustment has drifted outside of the TSI
®
recommended specification for continued use.
Sensor should be replaced or sent to TSI
®
for
recalibration.
Test Duration
The time over which the data will be logged while
in Continuous Save mode. The test duration
can be set from 1 second to 99 hours:
59 minutes: 59 seconds.
Sample Interval
The sample interval is the time period where data
is collected and averaged to produce a single
value. For example, if the sample interval is set
to 1 minute, each 1 second sample will be
averaged over the minute and result in a single
value. The sample interval can be set from
1 second to 99 hours: 59 minutes: 59 seconds.
However, the sample interval cannot be greater
than the test duration.
Time Constant
The time constant is an averaging period for the
readings shown on the display. It is used to
dampen fluctuations in the measurement to
make it easier to read. If there are significant
fluctuations in the readings, a longer time
constant setting will reduce the fluctuations. The
display will update ever second; however, the
displayed reading will be the average over the
time constant period. For example, if the time
constant is 5 seconds, the display will update
every second, but the displayed reading will be
the average of the last 5 seconds.