Model Interpretation

3500/40M‑AXX‑BXX

3500/40M: Base model (4‑channel Proximitor monitor)

AXX (I/O Type):

01: Internal terminations

02: External terminations

03: Internal barriers + internal terminations (intrinsically safe)

04: TMR with external terminations

BXX (Approvals):

00: None

01: CSA/NRTL/C

02: ATEX/IECEx/CSA (Zone 2)

Common part numbers: 3500/40M‑01‑00, 3500/40M‑03‑00.

Technical Parameters

Mechanical

Form Factor: Full‑height, single‑slot

Dimensions (H×W×D): 241 mm × 24.4 mm × 242 mm

Weight: ~0.91 kg

Installation: Any full‑height slot in 3500/05 rack

Inputs (4 Channels)

Transducer Compatibility: Bently Nevada 3300/3300XL series (5 mm/8 mm/11 mm probes)

Input Type: Eddy‑current proximity (‑24 VDC bias)

Input Impedance: >1 MΩ

Frequency Response: 0–30 kHz

Accuracy: ±0.25% of full scale

Measurements & Ranges

Radial Vibration: 0–500 μm (0–20 mils)

Axial Displacement: ±2 mm (±80 mils)

Differential Expansion: 0–25 mm (0–1000 mils)

Eccentricity: 0–500 μm (0–20 mils)

Outputs

Buffered Transducer Outputs: 4 channels (BNC, raw probe signal)

4–20 mA Analog Outputs: 4 channels (scaled to measurement)

Alarm/Trip: Alert + Danger per channel (configurable logic)

Power & Environmental

Power Consumption: 7.0–7.7 W (from rack backplane, −24 VDC)

Operating Temp: −30°C to +65°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Vibration/Shock: 1.5 g (5–500 Hz), 15 g (11 ms)

Status LEDs: OK, Alert, Danger (per channel)

Core Functions

4‑Channel Synchronous Monitoring: Independently configure each channel for vibration, displacement, DE, or eccentricity.

High‑Accuracy Signal Conditioning: Precision eddy‑current signal processing with ±0.25% FS accuracy.

Dual Alarm Thresholds: Software‑configurable Alert (warning) and Danger (trip) per channel.

Buffered Probe Outputs: BNC ports for oscilloscope/diagnostic tools.

4–20 mA Scaled Outputs: Interface with DCS/PLC for remote monitoring.

Built‑In Diagnostics: Probe fault, cable fault, and module self‑check with fault logging.

Hot‑Swappable: Replace without rack shutdown (redundant power recommended).

Applications

Power Generation: Steam/gas turbines, generators (vibration, thrust, DE monitoring).

Oil & Gas: Centrifugal compressors, pumps, blowers (shaft displacement & vibration protection).

Petrochemical/Refining: Critical rotating equipment (high‑speed machinery protection).

Heavy Industry: Pulp & paper, mining (large motor/turbine monitoring).

Safety Systems: SIS/ESD for vibration‑based trip logic.

Usage & Maintenance

Installation: Insert into full‑height slot; wire probe cables to rear terminals; connect BNC/buffered outputs.

Configuration: Use 3500 Configuration Software (v3.3+); set measurement type, range, thresholds, and output scaling.

Maintenance: Inspect probe cables/connectors annually; calibrate every 2–3 years; no internal consumables.

Status: Active; supported by Baker Hughes with full spare parts availability.