22
Program Mode
Calibrate Monitor
Fresh Air Calibration?
Refer to Calibrating the Monitor on page 5.
Multiple Sensor Calibration?
Refer to Calibrating the Monitor.
Single Sensor Calibration?
Refer to Calibrating the Monitor.
Oxygen Sensor Calibration:
The oxygen sensor calibration is slightly
different from other sensors; span calibration at 20.9% O
2
is perormed
during fresh air calibration. During single sensor calibration, the
oxygen sensor can be calibrated to 0% O
2
with pure nitrogen gas, by
pressing [Y/+] when asked “0%? Oxygen?” To calibrate at a different
concentration specified in Modify Span Gas Value, press [N/-].
NOTE
: After a single sensor oxygen calibration, perform fresh air
calibration to ensure the oxygen sensor is calibrated correctly.
Modify Span Gas Value?
The span gas is the second point of reference for calibration. Users may
modify the span values of the standard calibration gases to use other
calibration gases. However, DO NOT modify the span values when
using the RAE Systems calibration gas supplied with the monitor.
Change LEL/VOC Span Gas?
Change the type of calibration gas from methane (LEL) and isobutylene
(VOC) to be used as the span gas during LEL or VOC gas calibration.
However, DO NOT modify the span gases when using the RAE
Systems calibration gas supplied with the monitor.
Change Alarm Limits
Users may change the alarm limits for each sensor. Use [N/-] to cycle
through the submenu options. Press [Y/+] to enter a submenu. To
modify the limit, use [Y/+] and [N/-] to change the value. Use M to
move from character to charater.
To escape the submenu without saving changes, press M . To save,
press M until “Save?” appears. Press [Y/+] to save changes, otherwise
press [N/-] to discard changes.
Change High Alarm Limit?
Change Low Alarm Limit?
Change STEL Alarm Limit? (Short Term Exposure Limit)
Change Average Alarm Limit? (TWA – Time Weighted Average)
N/-
Y/+
N/-
Y/+
N/-
Y/+
N/-
Y/+
MODE
MODE
MODE
