User Manual

Table Of Contents
ToxiRAE Pro PID Users Guide
49
If you make a mistake, you can cycle through the digits by pressing [MODE] and
then using [Y/+] to change the number in each position.
Note: The default password is 0000.
If you do not know the password, do not enter anything. Just press [MODE]
repeatedly to highlight OK, and then press [Y/+].
Note: If the ToxiRAE Pro PID is in Programming Mode and you do not press a key
within 60 seconds, it exits Programming Mode and re-enters Normal Mode.
1. At the Calibration screen, press [Y/+].
2. Zero Calib” is highlighted. Make sure the ToxiRAE Pro PID is in clean air.
Otherwise attach a cylinder of zero gas to the Calibration Adapter installed on the
instrument.
3. Press [Y/+]. The message Apply zero gas…” is displayed.
4. Start the flow of the zero gas (if used) and press [Y/+] to start the zero calibration.
5. There is a 60-second countdown, during which time the screen shows the word
“Zeroing… and the countdown.
6. Upon completion, it says “Zeroing is done! Reading = 0.0ppm” along with the
reading (it should be 0.0 ppm or very close to it).
7. “Span Calibis highlighted.
Note: You can abort the zero calibration during its countdown by pressing the [MODE] key.
Important! If you used the Calibration Adapter and a zero air cylinder, you must remove
the Calibration Adapter from the ToxiRAE Pro PID. If the Calibration Adapter is
attached during normal operation, inconsistent and lower-than-norma l readings will occur
because of decreased concentration of the gas being monitored.
13.4. Span Calibration
This procedure determines the second point of the sensor calibration curve for the sensor.
To begin calibration, connect the calibration gas cylinder, flow regulator, and calibration
adapter to the ToxiRAE Pro PID.
With the ToxiRAE Pro PID in Programming Mode, and with Span Calib highlighted,
follow this procedure:
1. Press [Y/+]. The screen displays the current (or default) calibration gas and its
concentration. For example:
Cal. Gas: Isobutylene
Span=100ppm
Change?
Press [MODE] if you do not want to change it.