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Bently 3500/64M 176449-05 Dynamic Pressure Monitor – 4-channel high-temperature ATEX/CSA certified
Technical Specifications:
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Channels: 4 differential pressure inputs
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Input Types: 4-20 mA, ±20 mA, ±10 V, single-ended or differential
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ADC Resolution: 16-bit
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Sampling Rate: 51.2 kHz per channel simultaneously
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Frequency Response: 0 Hz – 10 kHz (user-band-pass 10 Hz – 5 kHz)
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Pressure Rating: 3,500 psi static (240 bar)
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Accuracy: ±0.25 % full scale
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Response Time: ≤2 ms
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Detailed content
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On-board Memory: 64 GB circular buffer for pre- & post-event waveforms
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Filter Options: Low-pass, high-pass, band-pass, notch, configurable via software
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Communication: Back-plane + Ethernet port for direct data export
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Power: 24 VDC from rack, 7.8 W max
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Operating Temperature: –30 °C to +65 °C
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Dimensions: 241 × 24 × 242 mm
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Weight: 0.9 kg
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Agency Approvals: ATEX Ex ia IIC T4 Ga, IECEx, CSA Class I Div 2, SIL 2 capable
Functional Features:
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Combustion instability index distinguishes flame-out from mechanical vibration
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51.2 kHz sampling captures blade-pass harmonics up to 5 kHz
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64 GB SSD archives 30 s pre-trigger and 300 s post-trigger waveforms
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Ethernet port streams real-time spectra to 170180-01-00 software or plant historian
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Hot-swappable without rack shutdown
Application Scenarios:
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Gas-turbine combustor – detects 350 Hz pressure oscillations indicative of flame blow-out
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Centrifugal compressor – identifies surge inception via 5 Hz pressure pulsation
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Reciprocating engine – monitors cylinder pressure ripple for valve leakage diagnosis
