Teledyne 3000PA - General purpose percent oxygen analyzer - Manual (Page 53)

Percent Oxygen Analyzer Maintenance 5
5-3 Teledyne Analytical Instruments
3. Divide the raw output reading by the percent oxygen
concentration of your span gas.
If the quotient is less than the Index value for the cell class you are
using, replace the cell.
Table 5-1: Cell Indices
Cell Class Index
A-3 1.818
A-5 1.818
B-1 4.545
B-3 3.716
B-5 1.244
B-7 1.515
C-3 2.488
C-5 0.606
5.2.3 Removing the Micro-Fuel Cell
The Micro-Fuel cell is located inside the nylon Probe behind the front
panel. (See Figure 5-1.) To remove an existing cell:
1. Remove power to the instrument by unplugging the power cord
at the power source.
2. Open the front panel door by pressing the release button on the
top right corner of the door all the way in and releasing it.
3. Pull up on the nylon Probe, with a slight rocking motion, to
release it from the Probe Receptacle.
4. Do Not remove the O-rings unless they are worn and no longer
hold the Probe tightly. (If worn, replace them.)
5. When it is free, unscrew the Cap from the nylon Probe. Hold
the Probe vertically to prevent dropping the cell out of the
probe.
6. Remove the Cell from the Probe, and dispose of it in an
environmentally safe manner.