A Polished Rod Transducer for Quick and Easy Dynagraphs

A new polished rod transducer (PRT) for the quick and easy capture of dynagraph data has been developed. The purpose of this development was to provide the analyst with a transducer that could be quickly and safely installed by one technician for the acquisition of dynagraph data. The device is a polished rod clamp-on unit which collects both the position and load information necessary for a dynagraph. The device uses sensitive strain gauges to obtain the load information and an accelerometer for obtaining the position information. Tests have shown that the device will provide data suitable for the analysis of down-hole pumping problems.