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The Bently Nevada 135489-02 is an I/O module designed for the 3500 Series machinery protection system. This module features integrated internal barriers and internal terminations, providing a compact and efficient solution for signal conditioning and routing within the rack. It is specifically engineered to support four proximity or acceleration sensor inputs, ensuring reliable data acquisition for vibration monitoring applications.
This I/O module is primarily used in critical rotating machinery protection systems, such as steam turbines, gas turbines, compressors, and pumps. It serves as the interface between field-mounted transducers and the 3500 monitoring system, facilitating precise vibration and position measurement.
| Product Model | 135489-02 |
| Module Type | I/O Module with Internal Barriers |
| Compatibility | 3500 Series |
| Input Channels | 4 x Proximity/Acceleration |
| Analog Inputs | 4-20 mA, 0-10 V |
| Power Supply | 24 VDC |
| Operating Temperature | -40 degC to +85 degC (-40 degF to +185 degF) |
| Humidity Tolerance | Up to 95% non-condensing |
The 135489-02 is designed for the 3500 series; however, ensure that your specific monitor module firmware and rack configuration support this I/O module version.
No, this model features internal barriers, which simplifies installation by eliminating the need for separate external barrier blocks for supported sensor types.

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