Teledyne 3190Z - Zirconium oxide trace oxygen analyzer - Manual (Page 29)

Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments 21
3. Immediately (within 5 seconds) press either the
Δ or ∇ button
until the display is stable and displays the oxygen concentration
of the applied calibration gas. Once set, the unit will enter
Analyze Mode after approximately three seconds.
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 control and
analysis unit
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.