Bently Nevada 3500/77M 140734-07 Reciprocating Cylinder Pressure Monitor

Bently Nevada 3500/77M 140734-07 Reciprocating Cylinder Pressure Monitor

Product Description

• Manufacturer: Bently Nevada
• Product Type: 3500/77M Reciprocating Cylinder Pressure Monitor
• Function: A 4-channel monitor designed to accept input from Bently Nevada-approved pressure transducers. It conditions signals to measure various pressures in reciprocating compressors and compares these to user-programmable alarms.
• Primary Purpose:
  • Machinery protection by continuously comparing monitored parameters against alarm setpoints.
  • Provides essential operational and maintenance information.

• Inputs:

  • Accepts 1 to 4 channels of Bently Nevada-approved positive voltage third-party pressure transducers (psia).

• Scale Factor Range:

  • 95,000 mV/psi for 100 psia range
  • 38,000 mV/psi for 250 psia range
  • 19,000 mV/psi for 500 psia range
  • 9,500 mV/psi for 1000 psia range
  • 3,800 mV/psi for 2500 psia range
  • 1,900 mV/psi for 5000 psia range
  • 950 mV/psi for 10,000 psia range

• Frequency Response: 0 to 5.5 kHz on all configured pressure channels.

• Pressure Accuracy:

  • ±0.5% of pressure transducer full-range (9.5 volts: From +0.5 to +10.0 volts) @ +25°C.
  • ±1.0% of pressure transducer full-range (9.5 volts: From +0.5 to +10.0 volts) over -30°C to +65°C.

• Measured Variables:

  • Cylinder Pressure
  • Discharge Pressure
  • Suction Pressure
  • Maximum Pressure
  • Minimum Pressure
  • Compression Ratio
  • Peak Rod Compression
  • Peak Rod Tension
  • Degree of Rod Reversal

• Input Impedance: 50 kΩ.

• Power Consumption: 7.8 watts with transducer supplies at full load.

• Outputs:

  • Front Panel LEDs: OK, TX/RX, Bypass.
  • Buffered Transducer Outputs: Provides direct transducer signal access.