5
Operating the ToxiRAE II
Turning the Monitor ON
Make sure the Lithium battery is installed .
Hold the button down and release when the
display says “on .” The monitor is now on .
The monitor performs a self-test preceding the
warm-up and zero calibration .
You will see the firmware version displayed briefly
(e.g., “F10” means firmware version 1.0). The
current gas concentration reading is displayed .
NOTE:
Turn the monitor on in clean ambient
air. Units with firmware version 1.4 are
automatically zeroed at power on. (For firmware
version 1.7, there is no auto-zeroing. After the firmware
version is displayed, there is a 10-second countdown, it
beeps at 1 second, and then it shows the current reading .)
Using the ToxiRAE II
After the monitor is turned on and completes its warm-
up, it is in Monitor Mode . The display shows the current
concentration of the specified gas in ppm.
You may also view exposure analysis—the STEL, TWA, and
PEAK—in Monitor Mode .
From the current gas concentration, press the button to
cycle through each exposure analysis reading . After a
minute of idle time, the monitor automatically returns to the
current gas concentration display from any of the analysis
displays .
