A new downhole gauge has been developed for monitoring deep well gas production. The system is self-sufficient where power, sensors and communications are built as one tool. The new system can provide pressure and temperature measurements and generate power inside the well. A power storage module is capable of capturing, conditioning and storing the energy generated for utilization during the data transmission to the surface. A surface to downhole communications module also was developed to transmit information to the downhole gauge to provide the ability to change data rates or ask for data in a master-slave configuration, A new digital signal-processing module for the downhole tool has been proven to work in the wellbore environment and capable of differentiating signal from noise. It also is capable of detecting and processing the commands issued at the surface.
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