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Frequently inquire Together
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InquiryBently Nevada 3500/64M 140734-05 Dynamic Pressure Monitor Module
The Bently Nevada 3500/64M 140734-05, also cataloged as the 3500/64M dynamic pressure monitor, serves as a single‑slot rack module for high‑temperature dynamic pressure transducer signal acquisition in 3500 machinery protection systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/64M 140734-05 |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | 0.82 kg (1.8 lbs) |
| Dimensions | 241 mm × 24.4 mm × 242 mm |
| Module Slot | Single‑slot monitor |
| Channel Capacity | 4 independent channels |
| Sensor Compatibility | Dynamic pressure transducers (2‑wire / 3‑wire) |
| Input Impedance | 10 kΩ (3‑wire), 1.5–3.5 MΩ (2‑wire) |
| Sensitivity | 100 mV/psi |
| Cascade Mode | Channel 1 feeds all four channels |
| Analogue Outputs | +4 to +20 mA per channel |
| Load Resistance | 0–600 Ω |
| Voltage Compliance | 0 to +12 VDC |
| DAC Resolution | 0.3662 µA per bit |
| Accuracy | ±0.25% at room temperature |
| Update Rate | <100 ms |
| Standards | API 670, CE, CSA, ATEX |
| Operating Temp | −40 to +85 deg C |
| Storage Temp | −40 to +85 deg C |
| Humidity | 5% to 95%, non‑condensing |
Eddy‑Current Probe Scaling and Gap Voltage Validation
Although designed for dynamic pressure monitoring, the 3500/64M integrates with proximitor systems where eddy‑current probe scaling is critical. Gap voltage validation at −10 VDC ensures accurate shaft motion interpretation. Cross‑talk suppression is achieved through shielded wiring and channel isolation, maintaining rotor dynamics fidelity across multi‑channel configurations.
Frequently Asked Questions
Q: Can the 3500/64M module be hot‑swapped in a 3500 rack? A: No, modules must be inserted or removed only when the rack is de‑energized to prevent undefined states.
Q: How are alarm delays configured? A: Alert delays are adjustable from 1–60 s, while danger delays range from 0.1–60 s, configurable via system software.
Q: What filtering options are available? A: Each channel supports low bandpass (5 Hz–4 kHz), high bandpass (10 Hz–14.75 kHz), and selectable 50/60 Hz notch filtering.
Field Installation Guidelines
- Install the module in a designated single‑slot position within the 3500 rack.
- Route transducer wiring with shield continuity to minimize EMI.
- Verify jumper and cascade settings before energizing to ensure correct channel routing.
- Maintain clearance for airflow around the rack to avoid thermal buildup.
- Confirm grounding of rack and module chassis to meet API 670 compliance.
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