Bently Nevada 3500/42-09-05 Four-Channel Proximitor Seismic Monitor

The Bently Nevada 3500/42-09-05 is a four-channel Proximitor Seismic Monitor designed to process vibration, position, and acceleration signals from compatible proximity, velocity, and acceleration transducers. It features internal terminations and barriers for Prox/Accel and Velomitor transducer configurations. The monitor provides programmable alarms and signal outputs for machinery condition monitoring and protection.

Key Features

• Four-channel monitoring of proximity, velocity, and acceleration signals.
• Supports vibration and position measurements with programmable alarm settings.
• Internal terminations for Prox/Accel and Velomitor transducer configurations.
• Internal barriers for the specified transducer arrangement.
• Provides buffered transducer outputs and recorder outputs for external monitoring equipment.
• Supports paired channel configurations for dual-function monitoring.

Technical Specifications

Signal Conditioning and Monitoring

The monitor conditions incoming transducer signals to produce vibration and position measurements for machinery monitoring. Its velocity signal conditioning section provides selectable high-pass and low-pass filtering. Furthermore, the 1X/2X vector filter supports measurements within a defined speed range of 60 to 100,000 cpm.

The buffered transducer output provides a signal interface for external monitoring or diagnostic equipment. In addition, the recorder output supports both current and voltage signal formats, allowing the measured values to interface with compatible recording equipment.

Alarm Configuration

The 3500/42-09-05 provides adjustable alert and danger thresholds based on 0 to 100% of full-scale measurement. Users can configure separate time delays for the two alarm levels. Therefore, the alarm response can account for the required monitoring conditions without changing the underlying measurement range.

Installation and Environmental Conditions

The specified operating temperature range is 0 to +65 deg C when internal barriers are installed. Meanwhile, the storage temperature range extends from -40 to +85 deg C. The stated humidity limit is 95% non-condensing.

The monitor and I/O module have separate physical dimensions and weights. For example, the monitor weighs 0.91 kg, while the I/O module weighs 0.46 kg. These values should be considered separately when checking rack configuration and replacement requirements.

Frequently Asked Questions

Q: How many transducer signals can the 3500/42-09-05 monitor?

A: It accepts between one and four proximity, velocity, or acceleration transducer signals. The actual measurement configuration depends on the selected transducer type and channel setup.

Q: Does the 3500/42-09-05 include internal barriers?

A: Yes. The specified configuration includes internal barriers and internal terminations for Prox/Accel and Velomitor transducer arrangements. The barrier configuration should be checked when selecting a replacement module.

Q: What recorder output signals does this monitor provide?

A: It supports +4 to +20 mA and 0 to +12 VDC recorder outputs, with a specified load resistance of 0 to 600 Ohm. The output format and external equipment requirements should be verified during system configuration.