 | The Geotech Classic Cordless CPT data transmission system uses sound waves to transfer data from the probe to the surface. The sound waves travel through the steel in the rods and are received by a microphone, which is also used for pushing the rods into the ground.
The Geotech CPT(u) probes are equipped with individual sensors for point resistance (qc), sleeve friction (fs) and pore pressure (u). The cones can also be equipped with tilt- and temperature the probe before it is forwarded to the newly developed HC-transmitter, sound transmitter or cable adapter for transmission to the surface. To back-up the data transmission, the cones can also be delivered with a back-up memory of 8 hours capacity, with 18 bits resolution on all channels.
The readings from the three channels are corrected for temperature drift by a temperature sensor and a processor in the electronic part of the probe. The probes have therefore a very low temperature sensitivity.sensors and with adapters for electric conductivity or seismic CPT. The data measured by the sensors is digitised, multiplexed and encrypted with an error detecting code in. | | | | | | |
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Geotechnical software
