Bently Nevada 3500/42M |Proximitor Seismic Monitor Quality Selection

Overview
The Bently Nevada 3500/42M (138708‑01) is an I/O module designed to interface with absolute shaft encoders and provide high‑precision shaft absolute data to the 3500 Machinery Protection System. It supports 4 input channels and integrates the termination of sensors, allowing for accurate monitoring of shaft position, velocity, and related parameters in critical rotating equipment.

General Information
Brand: Bently Nevada
Country of Origin: United States
Model: 3500/42M
Part Number: 138708‑01
Series: 3500 Machinery Protection System
Product Type: Shaft Absolute I/O Module with internal terminations
Application: Turbines, compressors, generators, and other high‑speed rotating machines requiring shaft position data for condition monitoring and protection.

Power Specifications
Supply Voltage: Supplied from system rack backplane
Typical Power Consumption: Estimated ~5 W
Protection Features: Integrated fault monitoring, sensor input buffering, internal signal terminations for sensor interface.

Communication & Interface
Input Channels: Four channels for absolute shaft encoder signals
Supported Sensors: Absolute shaft encoders, and optionally proximity or seismic probes in combination depending on configuration
Outputs: Conditioned signals delivered to monitor modules; channel status and fault indication available
Diagnostics: On‑board health monitoring, sensor termination integrity checking, fault‑status outputs.

Environmental
Operating Temperature: –30 °C to +65 °C
Storage Temperature: –40 °C to +85 °C
Humidity: Up to 95% RH, non‑condensing
Installation: Rack‑mounted within industrial control cabinet; designed for heavy‑duty rotating‑machinery protection environment.

Dimensions & Weight
Dimensions (L × W × H): 241.3 x 24.4 x 163.1 mm
Weight:  0.46 kg

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