Teledyne 3010TB - Split architecture trace oxygen analyzer - Manual (Page 85)

Oxygen Analyzer Part II: Analysis Unit
Part II: 5-5
Teledyne Analytical Instruments
To remove an existing cell:
1. Remove power to the instrument by unplugging the power cord
at the power source.
2. Rotate the housing cover counterclockwise until it is free from
the housing, and then removed it.
3. With one hand placed underneath the cell block ready to catch
the Micro-Fuel cell, lift up on the stainless steel gate in front of
the cell bloc. This releases the cell and cell holder from the
block. The cell and holder will fall out in your hand.
5.2.4 Installing a New Micro-Fuel Cell
It is important to minimize the amount of time that a Teledyne Trace
Oxygen Sensor is exposed to air during the installation process. The quicker
the sensor can be installed into the unit, the faster your TAI O
2
sensor will
recover to low O
2
measurement. levels.
CAUTION: Do not touch the sensing surface of the cell. It is
covered with a delicate Teflon membrane that can
leak when punctured. The sensor must be replaced
if the membrane is damaged.
Before installing a new cell, check the O-ring in the base of the cell
holder. Replace if worn or damaged.
Place the cell on the holder with the screen side facing down.
Note: There is a small location hole drilled in the holder. This hole
mates with a guide pin on the bottom rear of the cell block.
The hole in the cell block holder must align with the guide pin
on the cell block.
Step 1. Remove power from instrument.
Step 2. Remove the old sensor (if installed) from the analyzer.
Step 3. Purge the analyzer at approximately 1 SCFH flow rate with
N
2
(or applicable sample gas with the sensor holder re-
moved).
Step 4. Remove sensor from double bag storage.
Step 5. Remove sensor shorting button.
Step 6. Place sensor on sensor holder so that the gold contact plate of
the sensor is facing up towards the sky.
Step 7. Install sensor and sensor holder into cell block.