Each FE01 is a complete multi-channel acquisition system specifically designed for accurate measurements of surface temperatures and / or thermal fluxes. The device includes sensors for measurement, signal conditioning circuitry and circuitry to interface the radio modem.
A radio modem of RM01 family can be directly connected to the DB9 connector of FE01 and once connected both devices are powered by the internal battery. Just add a radio modem to a FE01 device and you get a complete measurement node able to communicate with DL01 or DL02 dataloggers.
All the configuration parameters, such as the sampling time Ts, are stored into the internal non-volatile memory. Every Ts seconds, FE01 converts the sensor signals into digital signals and sends them into a data packet to the datalogger.
Thanks to a low-power electronic circuitry, each measurement node is able to operate with very high autonomy; the battery life can vary from one day (Ts = 1 s) up to several months (Ts > 1 min). The battery, internal to the radio modem, is rechargeable and can be fully restored within a couple of hours.
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