Section 9. Maintenance
398
o Time. Clock will need resetting when the battery is replaced.
o Final-storage data tables.
A replacement lithium battery (pn 13519) can be purchased from Campbell
Scientific or another supplier. Table Internal Lithium-Battery Specifications
(p. 398)
lists battery specifications.
Table 105. Internal Lithium-Battery Specifications
Manufacturer Tadiran
Model TL-5902S (3.6 V)
Capacity 1.2 Ah
Self-discharge rate 1%/year @ 20°C
Operating temperature range -55°C to 85°C
When reassembling the module to the wiring panel, assure that the module is fully
seated or connected to the wiring panel by firmly pressing them together by hand.
Figure 124: Loosening retention nuts
Fully loosen the two knurled thumbscrews. Only loosen the screws. They will
remain attached to the module.
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