Bently Nevada Recip Rod Position Monitor 3500/72M 176449-08
The four-channel 3500/72M Recip Rod Position Monitor accepts input from proximity transducers, conditions the signal to provide dynamic and static position measurements, and compares the conditioned signals with userprogrammable alarms.
Each channel, depending on how you configure it, typically conditions its input signal to generate various parameters called measured values.
Use the 3500/72M 176449-08 Rack Configuration Software to:
-Configure alert setpoints for each active measured value and danger setpoints for any two of the active measured values.
-Protect reciprocating compressors by continuously comparing monitored parameters against configured alarm setpoints to display alarms and trigger relays, if needed.
-Monitor the condition of essential reciprocating compressor machinery.
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The monitor channels are programmed in pairs and can perform up to two functions at a time. For example, channels 1 and 2 can perform one function while channels 3 and 4 perform another or the same function.
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The 3500/72M 176449-08 Recip Rod Position Monitor meets API 618 requirements for reciprocating compressors. It measures:
-Rod position
-Rod drop
-Hyper-compressor
Input
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Category
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Specification
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Signals
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Accepts from 1 to 4 proximity probe signals
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Input Impedance
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10 kΩ
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Nominal Scale Factor
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Rod Position
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- 0.79 mV/µm (20 mV/mil)
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- 3.94 mV/µm (100 mV/mil)
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- 7.87 mV/µm (200 mV/mil)
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Rod Position 2
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- 3.94 mV/µm (100 mV/mil)
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- 7.87 mV/µm (200 mV/mil)
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Rod Drop
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- 3.94 mV/µm (100 mV/mil)
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- 7.87 mV/µm (200 mV/mil)
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Hyper Compressor
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- 3.94 mV/µm (100 mV/mil)
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- 7.87 mV/µm (200 mV/mil)
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Power Consumption
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7.7 watts, nominal
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Output
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Category
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Specification
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Front Panel LEDs
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OK LED
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Indicates when the Recip Rod Position Monitor is operating properly.
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TX/RX LED
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Indicates when the Recip Rod Position Monitor is communicating with other modules in the 3500 rack.
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Bypass LED
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Indicates when the Recip Rod Position Monitor is in Bypass Mode.
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Front Buffered Outputs
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Buffered Transducer Outputs
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Each channel has one coaxial connector on the front panel.Each connector is short-circuit protected.
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86-18965423501 
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