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VI. OPERATING INSTRUCTIONS
A.
General
(a)
Turn the 90XL ON…
To turn on the instrument, press the left most key at the bottom of the display. It is marked
with the
symbol.
(b)
Connect sensor module(s) to the 90XL meter
Select the sensor module or sensor modules that you would like to use and connect
them to the ports at the top of the instrument. The system will sense the type of sensor
module or sensor modules that are connected, and automatically orient the channels on
the display.
(c)
Take measurements…
Once the sensor module(s) are connected to 90XL meter, you are ready to take your
measurements.
WARNING:
Mesa Labs recommends verifying sensor module calibration using National
Institute of Standards and Technology (N.I.S.T.) traceable reference standards before
taking measurements, or whenever inaccurate readings are suspected.
(d)
Turn the 90XL OFF…
The 90XL may be turned off manually by pressing the OFF key at the bottom of the MAIN
screen. Additionally, if an AUTO-OFF (see configuration section) function has been
enabled, the instrument will power down automatically if no key activity is sensed during
the selected time period.
