Datasheet

EL-USB-2
Temperature, Humidity and Dew Point
Data Logger
www.lascarelectronics.com
Issue 14 08/2016 N.R Page 4 of 4
BATTERY INFORMATION
Replacement
We recommend that you replace the baery annually, or prior to logging crical data. Only use 3.6V ½AA lithium metal baeries.
The data logger does not lose its stored readings when the baery is discharged or replaced; however, the data logging process will
stop and will not resume unl the baery is replaced and the logger restarted by EL-WIN-USB or an EL-DataPad.
Before replacing the baery, remove the data logger from the PC. Please note that leaving the data logger plugged into the USB
port for extended periods will cause some of the baery capacity to be lost.
Passivaon
If le unused for extended periods of me the lithium metal baeries, including those used in the EasyLog range of data loggers,
naturally form a non-conducve internal layer prevenng them from self-discharge and eecvely increasing their shelf life.
When rst installed in the data logger, this may cause a momentary drop in the baery voltage (the Transient Minimum Voltage)
as the internal layer is broken down, resulng in the data logger reseng. Inserng the baeries in the data logger and leaving
it connected to a PC for about 30 seconds will remove this layer. Aer this, remove and re-install the baeries to reset the data
logger. Overall baery life will not be aected.
WARNING
Handle lithium metal baeries carefully, observe warnings on baery casing. Dispose of in accordance with local regulaons.
The humidity measuring element in the humidity data loggers can be contaminated through exposure to a variety of compounds.
These products should not be kept in proximity to volale chemicals such as solvents and other organic compounds. Generally
speaking, if a material or compound emits a strong odour you should not keep your humidity data logger in close proximity to it.
If you would like more informaon, please contact your local Lascar Electronics oce.
Exposure to extreme condions or chemical vapours will require the following recondioning procedure to bring the internal
sensor back to calibraon state:
Baking 80°C (176°F) at < 5%RH for 36 hours.
Re-hydraon 20 to 30°C (70 to 90°F) at > 74%RH for 48 hours.
High levels of pollutants may cause permanent damage to the internal sensor.
SENSOR ACCURACY & INFORMATION