User Manual

Table Of Contents
ToxiRAE Pro PID Users Guide
20
11.2.1. TWA, STEL, Peak
The first screen includes a readout for TWA, STEL, and Peak readings.
TWA The TWA (time-weighted average) reading is the average reading of the gas
concentration times that the monitor has been on, prorated to an 8-hour period.
STEL Short Term Exposure Limit (STEL) data based on 15-minute STEL values,
expressed in ppm or mg/m
3
. A STEL value is only displayed after the
ToxiRAE Pro PID has been on for 15 minutes or longer. After exiting PC
Communicatio ns mode, the STEL is reset.
Peak The Peak value tells you the highest reading for the sensor since the ToxiRAE
Pro PID was turned on. Press [Y/+] twice to clear the Peak value.
Note: If you do not press a key within 1 minute, the display reverts to the
normal reading.
Press [MODE] to advance from screen to screen.
11.2.2. Date, Time, And Temperature
The current Date is expressed as Month/Day/Year, with two digits for month and day,
and four digits for the year. Below the date is the time, which is expressed as
Hours/Minutes/Seconds, with two digits for each. The time is in 24-hour (military)
format. Below the time is the internal temperature, which can be in degrees Fahrenheit or
Celsius (settable in Programming Mode).
11.2.3. Wireless Settings
The current wireless settings are shown here. These include the Roaming, PAN ID,
Channel, and Unit ID, which are helpful when creating or troubleshooting networks.
Parent ID data does not apply.
11.2.4. Calibration Gas, Measurement Gas, Correction Factor
This screen shows calibration gas (Cal. Gas), measurement gas (Meas. Gas), and
correction factor (CF).