Bently Nevada 3500/25-01-03-00 135473-01 Keyphasor I/O Module Internal Barriers and Internal Terminations
Description:
135473-0 is 3500/25-01-03-00 Keyphasor Internal Barrier Internal Termination Keyphasor I/O Module. It is 1 full-height, installed behind 3500/25 Enhanced Keyphasor Module 149369-01.
The Keyphasor I/O Modules are full-height rack modules that receive signals from the Keyphasor transducers and route these signals to the Keyphasor Main Module (or Modules). The I/O Modules provide power to the Keyphasor transducers, and provide conditioned Keyphasor output signals via their Buffered Output terminals. Applications typically use these buffered outputs to provide Keyphasor signals to external equipment, such as TDIX or TDXnet.
The Isolated Internal Termination Keyphasor I/O Module passes input signals through transformers to provide true isolation for 4 Keyphasor channels. The primary side of each transformer is not referenced to ground and therefore provides isolation that removes potential ground loops present in installations that connect numerous systems in parallel. The modules also give transformer-coupled signals a -10 Vdc offset after they pass through the transformers. This improves the range of input signals that you can apply to the Keyphasor Main Module without internal clipping. The design of the Isolated I/O module is specifically for Magnetic Pickup applications, but will work with and provide isolation for Proximitor® sensor applications as long as you provide an external power supply. You should also note that the primary intent of this I/O module was for shaft speed and not phase measurements. You can use it for phase measurements, but you should note that this I/O module introduces a slightly higher phase shift than the Non-Isolated module. Refer to Section 8) for the specific phase shift associated with this I/O at different frequencies.
5 different types of Keyphasor I/O Modules are available, which cover the various options for internal or external terminations, type of terminations, signal isolation or non-isolation, and use of intrinsic safety barriers or not.

Ordering Information:
149369-01 Enhanced Keyphasor Module
125800-01 Keyphasor I/O Module (Internal Terminations)
126648-01 Keyphasor I/O Module (External Terminations)
125800-02 Isolated Keyphasor I/O Module (Internal Terminations) (Designed for use with Magnetic Pickups)
126648-02 Isolated Keyphasor I/O Module (External Terminations) (Designed for use with Magnetic Pickups)
135473-01 Keyphasor I/O Module (Internal Barriers and Internal Terminations