Portable Thermometers
User Guide
Cyclops L
7 - 4
7.2.2 Instantaneous temperature measurement
Instantaneous temperature measurement provides the real-time observed
temperature value. The temperature is updated continuously and the value is
viewed in the instrument eyepiece.
7.2.3 Averaged temperature measurement
(Not available on Cyclops 055L)
Averaged temperature measurement gives a ‘smoothed’ temperature value.
To use the averaging function,
press and hold down
the trigger. The
averaging function operates for the period during which the trigger is held
down. Averaging stops when the trigger is released.
The response time of the averaging is controlled by the
Averager Time
Constant
setting in
Menu Mode
. The options are
Slow
,
Mid
and
Fast
. Use
the
and
keys to select the required option from the menu.
With a
Fast
time constant selected, the temperature reading closely
matches the object temperature. Only the most rapid fluctuations in the
input are smoothed in the output. With a
Slow
time constant selected, the
temperature reading is much smoother, displaying more of a ‘trend’ value
rather than showing any rapid changes. With a
Mid
time constant selected, the
temperature reading is calculated somewhere between the fast and slow time
constant values.
Slow
averager
time constant
Fast
averager
time constant
Mid
averager
time constant
Fluctuating temperature
reading of object
Fig. 7-3 Graphical representation of typical
Averaged
temperature
measurement with Slow, Mid and Fast time constants
a
Thermometer trigger pressed
b
Averaging is initiated at the first instantaneous temperature value.
Averaged temperature values are calculated, displayed and updated every
half second whilst the trigger remains depressed. The final averaged value
is held on the side display when the trigger is released.
