Teledyne 3300ZB - Low-cost Zirconium Oxide Oxygen Analyzer - Manual (Page 29)

Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments 19
3. As the display is blinking, once the readout appears stable, press
either the
 or  button to adjust the reading to coincide with the
oxygen concentration of the span gas. Once set, the unit will
enter Analyze Mode after approximately five seconds after the
last key press.
Note: If no key presses are made during the 60 second period
when the display is blinking, the analyzer will accept the
display value as the true span concentration and
automatically leave the span mode. The display will cease
blinking.
The unit is now calibrated.
If the output of the sensor is outside of the expected range, this may be
caused by:
a) Bad electrical connection between the controler and
sensor.
b) Improperly analyzed or entered calibration gas value
c) Electronics failure
The unit will not accept the attempted calibration and will flash
‘0000’ on the LED display unit a valid calibration is performed.
4.7 LED Display on StartUp
When the unit is powered, it will initially display “8.8.8.8” for a
short period of time. This is to confirm all LED segments are
functioning. Afterward, the LED display will initiate a delay countdown,
allowing the sensor’s heater to begin charging and capture a zero
reading. Flowing “zero” gas or a sensor is not needed for this
instrument adjustment.