Teledyne TED-60 - Medical application oxygen monitor - Manual (Page 17)

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3-1 Teledyne Analytical Instruments
What to Do What to Do What to Do What to Do What to Do
A) Wait 1–2 minutes or until
the O
2
reading is stable and
try again.
B) Oxygen concentration at the
sensor is significantly higher
than 21%. Take the instru-
ment to a well-ventilated
area and repeat the calibra-
tion.
C) Try calibrating with a known
good sensor.
A) Remove T-7 sensor from
tee adapter and unscrew
the plastic flow diverter. Us-
ing absorbent tissue or cot-
ton swab, gently wipe off
sensing surface inside
threaded portion of sensor
assembly.
B) Relocate unit away from
sources of RFI.
Why Why Why Why Why
A new sensor must be allowed
to stabilize prior to calibration.
A) This is typical of all O
2
sen-
sors when they become
flooded. See Chapter 2.0:
Humidity.
B) Radio frequency interfer-
ence (RFI).
Symptom Symptom Symptom Symptom Symptom
A new sensor will not calibrate
in air.
The TED 60T does not react to
changes in oxygen
concentration, or the readings
are unstable and drifting.
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Troubleshooting Table