Bently-3500/42M-Proximitor Seismic Monitor

Bently-3500/42M-Proximitor Seismic Monitor

The 3500/42M Proximitor Seismic Monitor is a four-channel monitor that accepts input from proximity and seismic transducers. It conditions the signal to provide vibration and position measurements and compares the conditioned signals with user-programmable alarms. You can program each channel using the 3500 Rack Configuration Software to monitor and report: - Radial vibration - REBAM - Thrust position - Acceleration - Differential expansion - Shaft absolute - Eccentricity - Circular acceptance region - Velocity

OK LED Indicates when the 3500/42M Proximitor Seismic Monitor is operating properly. TX/RX LED Indicates when the 3500/42M Proximitor Seismic Monitor is communicating with other modules in the 3500 rack. Bypass LED Indicates when the 3500/42M Proximitor Seismic Monitor is in Bypass Mode. Buffered Transducer Outputs The front of each monitor has one coaxial connector for each channel. Each connector is shortcircuit protected. Output Impedance 550 Ω Transducer Power Supply -24 Vdc Recorder +4 to +20 mA Values are proportional to monitor full-scale. The monitor provides individual recorder values for each channel. Monitor operation is unaffected by short circuits on recorder outputs. Voltage Compliance (current output) 0 to +12 Vdc range across load Load resistance is 0 to 600 Ω. Front Panel LEDs Resolution 0.3662 µA per bit ±0.25% error at room temperature ±0.7% error over temperature range Update rate approximately 100 ms or less Shaft Absolute Buffered Outputs The Shaft Absolute I/O modules have one output for each channel group. Each output is shortcircuit protected. Shaft Absolute Output Impedance 300 Ω

Acceleration II Accuracy Within ± 0.33% of full scale typical ± 1% maximum Exclusive of filters Filter Quality High-pass 4-pole (80 dB per decade, 24 dB per octave) Low-pass 4-pole (80 dB per decade, 24 dB per octave) Frequency Response Bias filter -3 dB at 0.01 Hz Not OK filter -3 dB at 2400 Hz 1X and 2X vector filter Valid for machine speeds of 60 cpm to 100.000 cpm Table 3: Frequency Ranges for the 3500/42M Proximitor Seismic Monitor under Different Options using the Acceleration II Channel Type Frequency Ranges Output Type Without Filter Low or High Pass Filter With Integration RMS 10 to 30.000 Hz 10 to 20.000 Hz Peak 3 to 30.000 Hz 10 to 20.000 Hz Velocity and Velocity II Accuracy Within ±0.33% of full-scale typical ±1% maximum +1% -3% with MTL 764(-) Zener External Barrier Exclusive of filters Velomitor sensor accuracy Full Scale 0-0.5: ±3% typical Full Scale 0-1.0: ±2% typical Full Scale 0-2.0: ±1% typical Velomitor sensor accuracy with barriers Under radiated immunity conditions, add ± 11% for all full scale ranges. The total Velomitor sensor accuracy will be ± 15%. Frequency Response Bias -3dB at 0.01 Hz Velocity II only Not OK filter -3 dB at 40 Hz Velocity II only RMS 10 to 5.500 Hz, -3 dB Peak or peakto-peak 3 to 5.500 Hz, -3 dB 1X and 2X vector filter Valid for machine speeds of 60 to 100.000 cpm Velocity II only Filter Quality High-pass 4-pole (80 dB per decade, 24 dB per octave) Low-pass 2-pole (40 dB per decade, 12 dB per octave)

Shaft Absolute, Radial Vibration Frequency Response Direct filter User-programmable 4 Hz to 4000 Hz or 1 Hz to 600 Hz Gap filter -3 dB at 0.09 Hz 1X vector filter Valid for machine speeds of 240 cpm to 60.000 cpm Accuracy Direct and gap Within ±0.33% of full-scale typical ±1% maximum 1X Within ±0.33% of full-scale typical ±1% maximum Shaft Absolute, Velocity Accuracy Within ±0.33% of full scale typical ±1% maximum Exclusive of filters Frequency Response Peak or peak-to-peak User-programmable 3 to 4.000 Hz, -3 dB Filter Quality High-pass 2-pole (40 dB per decade, 12 dB per octave) Low-pass 2-pole (40 dB per decade, 12 dB per octave) 1X vector filter Constant Q Filter Minimum rejection in stopband of -57.7 dB Shaft Absolute Buffered Output Accuracy ±6.0% @ 25 C Circular acceptance region See Radial Vibration on page 4.. REBAM Frequency Response Spike User-programmable from 0.152 to 8678 Hz Element User-programmable for BPFO ranging from 0.139 to 3836 Hz High-pass corner is 0.8x BPFO. Low-pass corner is 2.2x BPFO. Rotor User programmable from 0.108 to 2221 Hz Direct Programmable from 3.906 to 14.2 Hz Selection is determined by Spike and Rotor filters. Gap Programmable from 0.002 to 1.0 Hz Selection is determined by the Rotor filter. 1X vector filter The range of shaft speeds for which the value is valid depends on the nominal shaft speed for which the channel is configured.