TSI IAQ50 - Manual (Page 12)

12
rameter, press the CO
2
key. Then, place
the probe in the location you want to
measure gas concentration.
TEMP Key
The meter will always display tempera-
ture readings from the permanent sensor
on the lower line of the display. When
you wish to take an external tempera-
ture reading using an RTD probe, plug
any three-pronged RTD probe into the
right side. Then, press the TEMP key to
view the temperature from the resistive
temperature detector (RTD). The letters
“Prb” will display on the top line of the
display and the actual temperature from
the RTD on the bottom line.
To return to reading temperatures from
the permanent probe, press the TEMP
key again.
Note: If the external RTD probe becomes
unplugged while in “Prb” mode, the display
will read “over.” If the RTD probe is not
plugged in and the TEMP key is pressed,
nothing will happen.