Calibration Oxygen Value; Threshold Alarms - Nuvair Pro O2 alarm Analyzer Operation Manual

4.4. Calibration Oxygen Value (O2c)
After the "O2c" is set the Pro O
calibration value default is 21%. It is not necessary to modify this value. The display
alternates between "O2c" and the current value (21% default).
Press the "Pro" button for more than two seconds and then release the button.
On the display will appear "Pr" for two seconds, then "AL 1" will appear. Use the
On/Off button to cycle through the various settings until you reach the "O2c" screen.
The 3 digit value will alternate with the "O2c" screen for a few seconds and the Pro
O Alarm Analyzer will be ready for adjusting the "O2c" Value.
2
1.) The blinking digit shows the cursor position.
2.) Press the "Pro" button to increase the value (from 0 to 9)
3.) Press the "Adjust" button to move the cursor to the next digit, the "Adjust" button
will be used to cycle through the rest of the digits.
4.) To complete your entry and save the O2c value, press the "On/Off" button. You will
then automatically jump to the "End" screen.
The oxygen calibration value will be the same value of the calibration set when the
instrument is switched on. During the warm up time if the oxygen percentage of the
gas flowing across the sensor is a different value of calibration set in the instrument, a
failed calibration is obtained and the wrong gas percentage will be displayed. Wrong
oxygen analysis may lead to death.
The calibration value of the Pro O
this value will change the analyzers ability to properly ready the % of oxygen in a gas.
A wrong value in this parameter will give a wrong reading of O
instrument will not be accurate. All the analysis concentration shown on the display
will be wrong. If you modify this setting you must test the analyzer for accuracy with
certified testing gas. Do not modify this value. Wrong oxygen analysis may lead to
death.

5.0. Threshold Alarms

Should the Oxygen reading go over the threshold alarms (AL1 or AL2) the instrument
will go into alarm mode and will activate the (optional) relays output (open collector
max 100mA) and the internal buzzer. The display will show the trespassed alarm and
the actual measured value. To stop the audible alarm, press any key. In this event the
Pro O alarm Analyzer will remain in alarm mode until the analyzed value goes below
2
the alarm.
The relay output typically is used to shut down the compressor. Nuvair can supply the
necessary components to adapt your compressor to the relay or provide them at the
time of install on a new compressor.
NUVAIR Rev.02.01.2012
Pro O alarm Oxygen Analyzer Manual
2
Alarm Analyzer goes to "O2c", this is the current Oxygen
2
alarm is factory set at 21% and any adjustments to
2
11
Page
TM
Pro O alarm Oxygen Analyzer
2
concentration and the
2