Parker N2 NITROSource Compact N2C-2 - Oxygen Analyser Calibration; Using a Calibrated Gas Supply; Using a Calibrated Independent Analyser; Using Compressed Air

OXYGEN ANALYSER CALIBRATION
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N2 Compact Nitrogen Gas Generator - User Guide. ©2020.
Warning
Hot surfaces and hazardous live terminals. Take care when performing the following calibration procedure as there are
hazardous live voltages and potentially hot surfaces within the enclosure.
Caution
 e pressure regulator and  ow control valve are factory set to deliver 250cc/min. to the O cell. Adjusting either
component could cause damage to the O2 cell or incorrect calibration.
 e O analyser should be calibrated at least once every three months against a calibrated gas supply or a calibrated independent
analyser.
For low purity applications the calibration may be performed using compressed air, however this method is not recommended when
the purity of the gas is critical.
 e purity of the calibration gas should not exceed 50ppm for high purity generators (ppm oxygen cells) and 5% for lower purity
generators (% oxygen cells). Do not exceed 7 barg pressure.
- Open the ball valve (3) and rotate the handle of the calibration ball
valve (2) so that it is pointing downwards as shown.
- Wait for the O2 reading to stabilise before entering the calibrated
level.
USING A CALIBRATED GAS SUPPLY
- Select menu 3.1 and enable the O Alarm Over-ride.
- Connect the gas supply to the O Analyser calibration port (1) on the side of the generator.
- Locate the calibration ball valve (2) inside of the shroud and rotate the handle clockwise so that it is pointing down as shown.
- Wait for the O reading to stabilise before entering the calibrated level.
USING A CALIBRATED INDEPENDENT ANALYSER
- Select menu 3.1 and enable the O Alarm Over-ride.
- Connect the analyser to the nitrogen outlet port of the generator.
- Wait approximately for the O reading to stabilise before entering the calibrated level.
USING COMPRESSED AIR
- Select menu 3.1 and enable the O Alarm Over-ride.
- Connect the O2 sample line between the elbow push in  tting, located on the ball valve (3), and the O Analyser calibration port (1).
Warning
If a sample line other than the one provided by Parker
is used ensure that it is suitable rated for the working
pressure of the generator.
Warning
 e sample line will need to be depressurised prior to
disconnection. Close the ball valve (3) and wait until the
pressure shown on the pressure gauge (4) reaches zero.
When the line is fully depressurised, rotate the handle of
the calibration ball valve (2) so that it is pointing
upwards and disconnect the line from the generator.