Trace Oxygen Analyzer | Operation 4 | |
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Procedure:
1.Expose the sensor to ambient air or instrument grade air (20.9 % oxygen). Allow time for the sampling system to purge and the analyzer to achieve equilibrium.
Note: If the analyzer output goes above the high alarm setpoint or below the low alarm setpoint, the front panel ALARM Indica- tor, beneath the SET Function buttons, will blink. When the SPAN key is pressed to enter SPAN mode, Alarm indicator stops blinking.
2.Press the SPAN button once.
3.Within 5 seconds press either the ∆ or ∇ button until the display is stable and reads 20.9 %.
The unit is now calibrated.
Note: If you use a span gas other than air, do not span in the
Note: If you use a span gas other than air, and the span gas oxygen concentration is less than 10,000 ppm, the analyzer could take up to 65 seconds to to settle. The lag is caused by a digital filter that is active only below 10,000 ppm (1%) oxygen.
If the output of the sensor as measured by the 3190 outside of the expected range due either to:
a)Bad electrical connection between the unit and the sensor,
b)Improperly analyzed or entered calibration gas value,
c)Electronics failure
The unit will not accept the calibration attemped and flash 5000 on the LED display unit a valid calibration has been performed.
4.7Displaying Percent & PPM on the LED Display
The analyzer displays the concentration in percent whenever the read- ing is over 9999 ppm. When the reading changes to percent, the LED display will alternate between flashing “PC” and the oxygen concentration. On the other hand, if the instrument is displaying ppm, only the concentra- tion reading will be shown.
Teledyne Analytical Instruments |