3500/77M Recip Cylinder Pressure Monitor
Datasheet
Description
The Bently Nevada™ 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.
• 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 provides eight measured variable values related 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
Three measured variables combine one or more channel values with configured mechanical parameters to compute their value:
l Peak Rod Compression
l Peak Rod Tension
l Degree of Rod Reversal
For more information on the 3500/77M Recip Cylinder Pressure Monitor, refer to the User Guide (document 146282)
Spares and Accessories
176449-07 3500/77M Cylinder Pressure Monitor.
143729-01 Cylinder Pressure I/O Module with Internal Terminations for Bently Approved Third Party Pressure Transducers
143737-01 Cylinder Pressure I/O Module with External Terminations for Bently Approved Third Party Pressure Transducers
00580434 Internal I/O Module connector header, Euro Style, 8-pin. Used on I/O modules 143729-01.
00580441 Internal I/O Module connector header, Euro Style, 3-pin. Used on I/O modules 143729-01.
146973-01 Recip Multi-Event Wheel Kit
145732-01 Recip Multi-Event Wheel
146622-01 Recip Multi-Event Wheel Stud
165855-XX Recip Cylinder Pressure Transducer(See 165855 data sheet)
283615 MTL 7796+ External Barrier (See Field Wiring Dwg 147729) (022000812 MTL 796(+) External Barrier is discontinued)
115M1270 Custom Band Type, dual track
114M1640 Custom Band Type, single track
111M8664-01 Installation manual for the band type
166M4363 Connector Header, Push-in-Spring Type(Alternative for PN 00580441)
166M2389 Connector Header, Push-in-Spring Type (Alternative for PN 00580434)
3500/77M-03
3500/77M-04
3500/77M-03-00
3500/77M-04-01
146282-01
140734-07
143729-01
