UM-0090-B1E
DT90 Range User Manual
Page 12
RG
The number of seconds shown here as
xx
depends on the sensor connected to the logger and on the so-called
Measurement Delay
available in
Global Sensor Settings
tab. The time, at which measurement is recorded in FLASH
non-volatile memory is the time of completing a sampling cycle.
In special cases, when sensor requires a longer starting time (i.e. to start up, stabilize the reading after start-up -
Measurement Delay
) and while the measurement cycle of a sensor is long (i.e. in order to damp the measurement), a
measurement time shift greater than 60 s may occur, and this is considered normal.
“Other” Interval Option
There is one more way to define sampling intervals by selecting
“
Other
”
option in the
Cycle
field. You will be presented
24 hours check box in hourly basis. Selecting any of the box will prompt the logger to start measurement at the beginning
of the selected hour. This “
Other
” option will disable a standard measurement interval.
This functionality is particularly useful if the sensors connected to the data logger do not require continuous powering, in
which power will only activated for the time of measurement. Powering up the sensors before measurement and shutting
off the power is preferred for all applications to preserve energy in the data logger.
Figure 5: Internal Channel
Scaling
Values obtained from sensors might be scaled in order to obtain desired output value ranges. Scaling of measurements
applies both to displayed temporary values and the values saved in non-volatile FLASH memory. Users can choose
between two types of scaling. Both options come down to scaling using a linear function.
Figure 6: Scaling - Two points (left) and slope-intercept (right)
x2, y2
x1, y1
y= ax + b
