Product User Guide | 6
RFOT
PRODUCT MAINTENANCE
Product Maintenance
Battery Replacement
Materials:
TLH-5903 Battery
1. Unscrew the end cap and gently separating the end from the body of the data logger.
2. Remove the battery retention clip by sliding a small screwdriver blade or paper clip between
the clip and battery holder and prying away from the holder.
3. Grasp the black base of the unit with cord hanging downward and both edges of the circuit
board, all with one hand. Pull the old battery out with the other hand.
4. Install a new battery, observing the polarity markings on the circuit board and battery holder.
Position the battery retention clip over the new battery and install by pressing downward until a
click is heard from each side.
5. Install the new battery as shown by the diagram on the bottom of the battery holder.
6. Screw the body of the logger back together making sure the O-Rings are not visible.
O-Rings
3.6V Lithium
Battery
Battery Replacement
Materials:
TLH-5903 Battery
1. Unscrew the end cap from the RFOT to expose the
O-Ring.
2. Use a small pointed tool (knife or pick) to pry the old
O-Ring out of its groove.
3. Make sure that the O-Ring groove is free of any dirt or
debris.
4. Partially screw the mating parts back together leaving
the O-Ring groove exposed.
5. Apply a thin coat of silicone based lubricant to the
O-Ring.
6. Stretch the O-Ring over the cap and into its groove.
WARNING:
Avoid stretching the O-Ring over the threads.
Sharp threads can cut the new O-Ring.
O-Rings
O-Ring maintenance is a key factor when properly caring
for the RFOT. The O-Rings ensure a tight seal and prevent
liquid from entering the inside of the device. Please refer
to the application note
O-Rings 101: Protecting Your
Data
, found at
, for information on how
to prevent O-Ring failure.
Recalibration
Recalibration is recommended annually for any data
logger; a reminder is automatically displayed in the
software when the device is due. To send devices back for
calibration, visit
.
