DescriptionThe 3500/77M Recip Cylinder Pressure Monitor is a 4-channel monitor that accepts input from Bently Nevada approved pressure transducers, conditions the signal to make various pressure measurements for reciprocating compressors, and compares the conditioned signals with user-programmable alarms. The primary purpose of the 3500/77M monitor is to provide: l Machinery protection by continuously comparing monitored parameters against configured alarm setpoints to drive alarms.l Essential machine information for operations and maintenance personnel.Depending on configuration, each channel typically conditions its input signal to provide various parameters called measured variables. Users can configure Alert setpoints for each active measured variable and Danger setpoints for any two of the active measured variables.Each channel of the 3500/77M will provide eight measured variable values that relate to cylinder pressure operation. The five values that relate to a single chamber are as follows:l Discharge Pressurel Suction Pressurel Maximum Pressurel Minimum Pressurel Compression Ratio