Due to the relatively high speed of present day reciprocating compressors, sensitive, high-speed, electronic instrumentation is required to obtain accurate indicator cards. Due to the high accuracies required, such instrumentation is usually specialized in that it serves only the purpose of engine indicating. This paper describes the use of general purpose, multichannel, dynamic measuring equipment to obtain a pressure-time indicator with superimposed suction and discharge pressures. In addition, a simple mechanical linkage pressure-time to pressure-volume converter is described which has been useful in eliminating a tedious data replotting process. The accuracy of the program appears to be within three percent.

This content is only available via PDF.
You do not currently have access to this content.