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The Bently Nevada 3500/64M 140734-05 is a single-slot, four-channel dynamic pressure monitor module built exclusively for the Bently Nevada 3500 machinery protection system. Unlike conventional static pressure transmitters, this card is engineered to capture high-frequency dynamic pressure fluctuations, making it the standard hardware for gas turbine combustion stability monitoring, compressor surge detection, rotating stall tracking and pressure pulsation diagnostics on critical rotating equipment.

This 3500/64M 140734-05 module accepts input signals from high-temperature dynamic pressure transducers, including piezoelectric combustion sensors paired with Bently Nevada charge amplifiers such as 350500 and 86517. It supports both 2-wire and 3-wire transducer wiring with matched input impedance, and each channel can run independent bandpass filtering plus optional notch filtering configured inside the official 3500 rack software. Filter corner frequencies are fully adjustable to isolate combustion rumble, acoustic resonance and aerodynamic instability signals while suppressing power-line noise and unrelated vibration interference.

Every channel generates bandpass dynamic pressure proportional values, with independent Alert and Danger alarm setpoints. When pressure pulsations cross configured thresholds, the module sends alarm and trip commands through the rack backplane to relay output modules, enabling automatic machinery protection aligned with API 670 standards. It also provides recorder analog outputs to feed real-time pressure pulsation data into plant DCS, SCADA and System 1 condition monitoring software for trending, spectrum analysis and post-fault root-cause investigation. A dedicated keyphasor sync function allows engineers to correlate pressure pulsations with shaft rotational phase for advanced order tracking and combustion eccentricity analysis.

Hot-swap design lets technicians replace the 3500/64M 140734-05 without powering down the entire 3500 rack, reducing forced outage and maintenance downtime in power plants, refineries and LNG facilities. It shares the same backplane communication architecture as the full 3500 series family and works seamlessly alongside speed, vibration, thrust and temperature monitor modules inside one rack assembly.

We supply genuine surplus, fully tested used and refurbished Bently Nevada 3500/64M 140734-05 dynamic pressure monitor modules. Each unit undergoes complete functional validation: channel input response test, filter configuration verification, alarm/trip logic check, backplane communication test and connector inspection. We can provide real item photos, test reports, packing documentation and anti-static export packaging for cross-border B2B orders.

If you need matching spare parts including pressure transducers, charge amplifiers, interconnection cables, 3500 rack power supplies, relay modules or other 3500 series monitor cards such as 3500/65, 3500/42M, 3500/50 and 3500/92, send your full part list for combined quotation and consolidated shipment.

We serve system integrators, plant maintenance teams, EPC contractors and end users worldwide. Flexible trade terms including EXW, FOB, CIF and DDP are available. Our automation spare parts team provides clear lead time confirmation and consistent after-sales communication for critical machinery protection spares.

Submit your inquiry today to verify stock availability and receive the latest quotation for the Bently Nevada 3500/64M 140734-05 dynamic pressure monitor module.

3500/64M 140734-05

Specification Section

Part Number: 3500/64M 140734-05 Manufacturer: Bently Nevada (Baker Hughes) Product Type: Dynamic Pressure Monitor Module Number of Channels: 4 independent monitoring channels System Compatibility: Bently Nevada 3500 Machinery Protection Rack Core Measurement: Bandpass dynamic pressure, high-frequency pressure pulsation Supported Sensors: High-temperature dynamic pressure transducers, piezoelectric combustion probes Signal Conditioning: Software configurable bandpass filter, optional notch filter Alarm Logic: Two-stage Alert / Danger setpoints, trip capable Auxiliary Output: Analog recorder output for plant control system integration Keyphasor Sync: Supported for phase-locked pulsation analysis Installation: Single rack slot, hot-swappable Compliance: API 670 machinery protection standard Typical Applications: Gas turbine combustion instability monitoring, centrifugal compressor surge & rotating stall detection, reciprocating machinery pulsation monitoring Target Industries: Power generation, oil & gas, refinery, petrochemical, LNG, heavy process industry Operating Temperature: -30°C ~ +65°C

FAQ

What is Bently Nevada 3500/64M 140734-05 used for? The 3500/64M 140734-05 is a dedicated dynamic pressure monitor for the 3500 rack. It tracks fast pressure pulsations inside gas turbine combustors and compressors, detects combustion instability, surge and rotating stall, and triggers protection alarms and trips.

Can this 3500/64M card work in my existing 3500 rack? Yes. It is a native 3500 series single-slot module, recognized and configurable by the official 3500 rack configuration software, compatible with standard backplane communication.

Do you test the 3500/64M 140734-05 before shipment? All stock units are fully bench tested. We verify each input channel, filter response, alarm trip sequence and backplane communication. Test records and product photos are available on request.

What accessories pair with the 3500/64M dynamic pressure monitor? Common matching items include dynamic pressure probes, charge amplifiers (350500 / 86517), signal extension cables, 3500 relay output modules and System 1 monitoring software licenses.

BENTLY BRAND

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