The TL300 Temperature Logger System consists of a Temperature
Logger Software application, a receiver module (TL-3BS) and two
temperature sensors (TL-3TSN), each including a transmitter system.
A USB-cable connects the receiver to the computersystem running the
Temperature Logger application.
The temperature sensors are designed to registrate temperatures
between –30 and +80 degrees Celsius. However the temperature
range may also be limited by the design and/or state of the batteries.
The Temperature Logger application at the computer displays all
temperature data, which have been transferred by temperature sensors
to the USB-receiver.
Temperature sensors continuously registrate temperature and report
new values to the USB-receiver at intervalls of ca. 45 seconds.
Each sensor in the sensorlist reports the date and time stamp for the
most recent measurement data set. The right side window displays a
continuous curve for the registrated temperature for the selected sen-
sor.
Sensors and receiver use a wireless communication system, working
at 433MHz. This frequency is freely available for communication at
transmitting powers under 10 milliwatts.
Depending on surrounding building constructions, the allowed 10mW
power level allows a transmission range of 20-40 meters.
Temperature sensors may be located inside or outside buildings, at any
place where an registrated overview of temperature curves is desired.
Unreliable signal levels may be improved substantially by slightly
modifying the sensor’s or the receiver’s location.
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