AirAware
9
Each AirAware utilizes electrochemical sensors that may require between 10
and 360 minutes (gas dependent) or 12-16 hours for NH
3
and HCl to stabilize
when initially activated. During this warm-up period, the unit may display
concentrations of gas and possibly alarm.
***
A flashing decimal point on the lower right corner of the display will appear for 3 minutes after start-up,
calibration, bump, or programming. This is an indicator that the 4-20 mA signal is locked at 3 mA/16 mA and
that all alarm functions are disabled. Once this flashing indicator clears, all functions will return to normal.
During normal operation, the LED display shows:
HCl
0.2 to 30.0 ppm in 0.1 ppm increments
Cl
2
, NO
2
, SO
2
0.2 to 99.9 in 0.1 ppm increments
NH3
4 to 200 ppm in 1 ppm increments
CO, H
2
S, NO
0 to 999 ppm in 1 ppm increments
O
2
0.0 to 30.0% by volume in 0.1% increments
Set-up Mode
The AirAware™ is a very flexible gas-monitoring instrument with many
options. Listed below are the various programming modes and procedures
required to select various options.
1. In order to make programming changes, remove the optional vanity plate
(if installed) from the face of the instrument by releasing the locking tabs.
004
2. Loosen the 5 Phillips head (captive) screws on the faceplate allowing it to
hinge downward to provide access to internal
or
buttons. (Labeled S1
and S2.)
