Bently Nevada 3500/77M Cylinder Pressure Monitor Cylinder pressure I/O with external terminations ATEX/IECEx/CSA
3500/77-04-02
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3500/77-03-01
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Features
- Accepts 1 to 4 channels
- Frequency response: 0 to 5.5 kHz
- Three measured variables:
- Peak rod compression
- Peak rod tension
- Degree of rod reversal
- Pressure accuracy:
- 0.5% from 0.5 to 10.0 volts at 77°F
- 1.0% from 0.5 to 10.0 volts over 22 to 150°F)
- Front panel LEDs: OK, TX/RX, Bypass
- Transducer power supply: 23.0 ±0.8 Vdc with 24.5 ma current limiting
The Bently Nevada 3500/77M 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 3500/77M provides:
- Machinery protection by continuously comparing monitored parameters against configured alarm setpoints to drive alarms
- Essential machine information for operations and maintenance personnel
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:
- Discharge Pressure
- Suction Pressure
- Maximum Pressure
- Minimum Pressure
- Compression Ratio
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