Bently Nevada 135489-01 (3500/42M I/O Module) – English Datasheet

Manufacturer: Bently Nevada (Baker Hughes)

Model: 135489-01 (for 3500/42M Proximitor/Seismic Monitor)

Type: 4‑Channel I/O Module with Internal Barriers & Internal Terminations

Application: Interfaces proximity/accelerometer sensors in hazardous areas to the 3500 machinery protection system.

General

Part Number: 135489-01

Series: 3500 (3500/42M Monitor)

Channels: 4 × Proximity/Accelerometer (Prox/Accel) channels

Barriers: Built‑in intrinsic safety barriers (for hazardous locations)

Terminations: Internal screw terminals (no external I/O module needed)

Mounting: Installs directly on 3500/42M monitor (rack‑mount in 3500 chassis)

Inputs (Sensor Interface)

Sensor Types: Eddy‑current proximity probes, accelerometers, velocity sensors

Input Impedance: 10 kΩ (Prox/Accel inputs)

Sensitivity:

Proximity: 3.94 mV/μm (100 mV/mil) / 7.87 mV/μm (200 mV/mil)

Acceleration: 10 mV/(m/s²) (100 mV/g)

Velocity: 20 mV/(mm/s) pk

Frequency Range: 0.5 Hz to 10 kHz (±3 dB)

Sensor Power: –24 VDC (proximity probes), 40 mA max/channel

Electrical

Power Supply: 18–30 VDC (from 3500 rack)

Power Consumption: 7.7 W (typical)

Isolation: 1500 VAC input‑to‑system isolation

Environmental

Operating Temp: –30°C to +65°C (–22°F to +150°F)

Storage Temp: –40°C to +85°C (–40°F to +185°F)

Humidity: 5%–95% RH, non‑condensing

Certifications: ATEX, IECEx, CSA, UL (intrinsically safe)

Mechanical

Dimensions (H × W × D): 241.3 × 24.4 × 163.1 mm

Weight: 0.46 kg (1.01 lb)

Key Features

✅ 4‑channel isolated I/O for vibration/displacement monitoring

✅ Internal intrinsic safety barriers (Zone 0/1/2, Class I Div 1/2)

✅ Direct sensor connection (internal terminations reduce wiring)

✅ API 670 compliant for machinery protection systems