Maintenance Model 3110
42 Teledyne Analytical Instruments
Figure 4-1: Battery Charger Port on the Model 3110
4.5 Cell Replacement The characteristics of the micro-fuel cell are similar to those of a
NiCad battery in that both provide an almost constant output through their
useful life, and then fall off sharply towards zero at the end. If the sample
being analyzed has a low oxygen concentration, cell failure will probably
be indicated by the inability to properly calibrate the analyzer. You will find
that very little span adjustment will be required to keep the analyzer
calibrated properly during the duration of a given cell’s useful life. If large
span adjustments are required to calibrate the instrument, or calibration
cannot be achieved within the range of the control, the cell should be
immediately replaced. Refer to section 4.4 before replacing the cell.
To offset the possibility of not having a replacement cell available
when it is needed, TAI recommends that a spare cell be purchased
shortly after the instrument is placed in service, and each time the cell is
replaced thereafter.
The spare cell should be carefully stored in an area that is not
subject to large variations in ambient temperature (75 °F nominal), and