Real Time Clock Backup Battery - Teledyne ADFM Pro20 Installation And Operation Manual

Figure 3-3 Canister case desiccant and humidity indicator card
3.3 Real Time Clock
Backup Battery
Section 3 Maintenance and Troubleshooting
Desiccant
bag
The real time clock is designed to keep the time updated when
the flow meter's power is removed. In the box controller, the
backup battery is a single, 3-volt, 250 mAh lithium coin cell,
located near the bottom left corner of the ADFM motherboard.
The lithium battery life is approximately ten years. To replace
the battery in a box controller, refer to the following steps. The
canister controller must be returned to the factory to have the
battery replaced.
Never open the flow meter housing in a damp or corrosive
atmosphere. Only perform maintenance work inside the case
in a clean, dry location.
1. Turn the "Battery" switch to the OFF (0) position to
remove power.
2. Remove the front cover and open the interior panel.
3. With a small-blade, non-conductive screwdriver, gently lift
and slip out the coin cell.
4. Install a new coin cell (Panasonic PR2330 or equivalent).
5. Reapply power to the instrument.
6. Test the system for proper operation.
ADFM® Flow Meter
CAUTION
30
20
40
3-5