Bently Nevada 128229-01

Ordering Information

Monitor 3500/42 - AA - BB

A: I/O Module Type

See I/O Module Types on page 17.

B: Hazardous Area Approval Option

00 None

01 cNRTLus (Class 1, Division 2)

02 ATEX / IECEx / CSA (Class 1, Zone 2)

Technical Parameters

Channels:

2 × proximity-probe inputs (0–50 V p-p) for Bently Nevada 128229-01

2 × seismic-vibration inputs (±10 V or IEPE @ 4 mA loop-powered)

Internal Terminations:

1 kΩ for proximity probes

120 Ω for IEPE seismic sensors

Pass-through for ±10 V accelerometers

Signal Conditioning:

Programmable gain (×1–×10) on all channels in Bently Nevada 128229-01

Field-selectable band-pass filters: 1×, 2×, broadband vibration

Sampling & Conversion: 200 Hz (proximity) / 1 kHz (seismic) digitization with 16-bit resolution

Isolation: ≥ 1 kV channel-to-chassis ground

Power: 24 V DC (18–32 V DC) via rack backplane; ≤ 5 W total

Environmental: 0 °C – 70 °C operating; –40 °C – 85 °C storage; up to 95 % RH

Product function

Conditions, terminates, filters, and digitizes shaft-clearance and structural-vibration signals via Bently Nevada 128229-01 into synchronized digital data on the 3500 bus. Eliminates external termination blocks by embedding resistive loads.

Application Areas

Hydro-Turbine Monitoring: Clearance and wicket-gate vibration using Bently Nevada 128229-01 in high-moisture environments.

Large Compressors: Rotor-position and foundation vibration monitoring.

Power Generators: Bearing-clearance and stator-core vibration with Bently Nevada 128229-01 in control racks.

Offshore Platforms: Space-constrained cabinets requiring multifunction I/O modules.