DT Series Datalogger
s Maintenance and Service
Guidelines
8B RST Instruments Ltd.
Page
2 BATTERY
The recommended battery models for most RST DT Series Dataloggers are the
SAFT LSH14 (lithium-thionyl chloride C-Cell) or SAFT LSH20 (lithium-thionyl chloride
D-Cell). SAFT LSH20 is the recommended battery for all datalogger units with
RSTAR and DT Link wireless capability. The only exception is that the DTSAA logger
only supports SAFT LSH20 battery.
Battery lifespan is difficult to accurately predict due to the number of variables that
can affect it, including measurement interval, number of sensors being measured,
radio signal (if applicable), temperature, and humidity, among others.
Although battery voltage data is logged in all DT Series dataloggers, lithium-thionyl
chloride batteries generally stay at full voltage before suddenly dropping and
depleting. This makes it difficult to predict when lithium-thionyl batteries should be
replaced. Contact RST Instruments to determine the recommended approximate
battery replacement schedule.
It is recommended to disconnect the battery when the DT Series dataloggers are not
in use as the dataloggers will continue logging if the batteries are left installed. Store
the batteries at room temperature if possible.
2.1 BATTERY SAFETY
CAUTION:
DO NOT ATTEMPT TO RECHARGE THE BATTERY.
DO NOT REPLACE THE BATTERY WITH AN ALKALINE OR ZINC-CARBON BATTERY.
DO NOT SHIP THE DT-SERIES DATALOGGERS WITH THE BATTERY INSIDE.
Follow local laws and regulations of your region for battery disposal.
Contact RST for replacement batteries.
3 MOISTURE PREVENTION
RST DT Series Dataloggers are housed in weather resistant, NEMA 4X IP66 rated
enclosures. This prevents rain, snow, and dust from entering the enclosure but only if
the dataloggers are properly installed and sealed. RST DT Series Dataloggers are
not submersible.
Each datalogger has up to four areas of entry for moisture and humidity if not
properly sealed:
