Model Interpretation

3500/42M‑XX‑XX

3500/42M: 4‑Channel Proximitor/Seismic Monitor

1st XX (Configuration):

01: Standard (‑24 VDC sensor power, buffered outputs)

02: Internal safety barriers (for hazardous areas)

2nd XX (Certification/Options):

00: Standard

05: With 4–20 mA analog outputs

01: CSA/ATEX/IECEx (Zone 2)

Common P/N:

3500/42M‑01‑00 (140734‑02 + 135489‑01)

3500/42M‑01‑05 (with 4–20 mA)

Technical Parameters

Mechanical

Form Factor: Full‑height module (1 front + 1 rear slot)

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

Weight: ~0.9 kg

Power Consumption: 7.7 W typical

Installation: Any slot in 3500 rack; hot‑swappable

Electrical – Inputs

Channels: 4 independent, pair‑configured (1&2, 3&4)

Transducer Types:

Proximity: 3300/3500 XL series (‑24 VDC powered)

Seismic: Velocity (piezoelectric) or acceleration sensors

Input Impedance: 10 kΩ (proximity/acceleration)

Frequency Response:

Proximity: 0–30 kHz

Seismic: 0–10 kHz

Sensitivity: 3.94 mV/µm or 7.87 mV/µm (selectable)

Electrical – Outputs & Alarms

Buffered Probe Outputs: 4 channels (BNC, short‑circuit protected)

Analog Outputs (optional): 4–20 mA per channel (0–10 V selectable)

Alarm Thresholds: User‑programmable Alert/Danger per channel pair

Alarm Logic: Latching/non‑latching, voting with other modules

Front‑Panel LEDs: OK, TX/RX, Bypass, Channel Alarm

Environmental

Operating Temp: −30°C to +65°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: SIL 2, CE, UL, CSA, ATEX/IECEx (Zone 2)

Compliance: API 670

Compatibility

Rack: 3500/05 (all slots)

Transducers: 3300 XL, 3500 XL proximity probes; Bently Nevada seismic sensors

Software: 3500 Rack Config v3.3+; Data Acquisition v2.40+

System: All 3500 monitors (vibration, speed, temperature)

Core Functions

Dual‑Technology Monitoring: Simultaneously processes proximity (displacement) and seismic (velocity/acceleration) signals in one module.

Multi‑Parameter Measurement: Channel pairs configurable for 2 independent functions (e.g., radial vibration + thrust).

High‑Accuracy Signal Conditioning: ±0.25% accuracy (room temp), ±0.7% over temperature.

Flexible Alarm Configuration: Independent Alert/Danger setpoints, delay, and voting logic.

Diagnostics & Bypass: Self‑check, probe fault detection, and channel bypass for maintenance.

Applications

Power Generation: Steam/gas turbines, generators, BFP (shaft vibration, thrust, casing vibration).

Oil & Gas: Centrifugal compressors, pumps, turbines (rotor/stator vibration, thrust position).

Heavy Industry: Large motors, gearboxes, fans (bearing vibration, shaft displacement).

TSI Systems: Turbine Supervisory Instrumentation for critical rotating assets.

Predictive Maintenance: Early fault detection (rubbing, misalignment, bearing wear) via continuous monitoring.