Bently Nevada 3500/72M Recip Rod Position Monitor

The Bently Nevada 3500/72M Recip Rod Position Monitor is a four channel monitor that accepts input from proximity transducers, conditions the signal to provide dynamic and static position measurements, and compares the conditioned signals with user programmable alarms.

You can program each channel using the 3500 Rack Configuration Software to perform the following functions:

• Rod Position measurement
• Rod Drop measurement
• Hyper-Compressor measurement

Features

• Accepts from 1 to 4 proximity probe signals
• Input impedance 10 kΩ
• Front panel LEDs: OK, TX/RX, Bypass
• Rod position:
• Peak-peak filter Fixed 1 Hz to 600 Hz
• Gap filter -3 dB at 0.09 Hz
• Rod drop/hyper channels:
• Average piston position: Fixed 1 Hz to 600 Hz
• Average gap: -3 dB at 0.09 Hz

• Accuracy: ±0.33% of full-scale

General Introduction

Technical Features1

• Input Capability: It can accept input from 1 to 4 proximity transducers. The input impedance is 10 kΩ, which ensures stable signal reception and processing.
• Filtering Function: For rod position, it has a peak-peak filter fixed at 1 Hz to 600 Hz and a gap filter with -3 dB at 0.09 Hz. For rod drop/hyper channels, the average piston position is fixed at 1 Hz to 600 Hz, and the average gap is -3 dB at 0.09 Hz.
• Accuracy: The monitor has an accuracy of ±0.33% of full-scale, providing precise measurement results.

Functionalities5

• Signal Conditioning and Measurement: The 3500/72M accepts input from proximity transducers, conditions the signal to provide dynamic and static position measurements. It can perform rod position measurement, rod drop measurement and hyper-compressor measurement.
• Alarm Function: It compares the conditioned signals with user-programmable alarms. Users can configure alert setpoints for each active measured value and danger setpoints for any two of the active measured values. The monitor continuously monitors the parameters and triggers alarms promptly when the setpoints are exceeded, helping to prevent potential equipment failures.
• Channel Configuration: The monitor channels are programmed in pairs. It 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.

Applications