Model: 3500/25 125792-01 | 135473-01
Operating Temperature
-30°C to +65°C (-22°F to
+150°F) when used with
Keyphasor I/O Module other
than the Internal Barrier
version.
0°C to +65°C (32°F to +150°F)
when used with Keyphasor
Internal Barrier I/O Module
(Internal Termination).
StorageTemperature
-40°C to +85°C (-40°F to+185°F)
Humidity 95%, non-condensing
Dimensions
HeightxWidthxDepth)119.9 mmx 24.4 mmx256.5
mm(4.72 inx 0.96 inx 10.10 in).
Weight 0.34 kg (0.76 lbs.)

3500/25 125792-01 | 135473-01 is an Enhanced Keyphasor Module developed by Bently Nevada. It is a half-height, two-channel module used to deliver Keyphasor signals to the monitor modules in a 3500 rack. When the Keyphasor mark on the shaft aligns with the Keyphasor transducer, the module detects the alignment using magnetic pickups or proximity probes and converts the input signals into digital Keyphasor signals.

3500/25 125792-01 | 135473-01Functional Description
For regular setup, the 3500 Machinery Protection System can accept up to four Keyphasor signals, and for paired configuration, it can accept up to eight.
A spinning shaft or gear’s once-per-turn or multiple-event-per-turn pulse known as a keyphasor signal can be used to detect timing precisely.
As a result, shaft rotative speed and vector characteristics like 1X vibration amplitude and Phase can be measured by 3500 monitor modules and external diagnostic tools.

Features:
Half height (2) channel
Input signal: eddy current probe or magnetic sensor
The Bentley Nevada 3500/25 125792-01 | 135473-01Series Enhanced Key Phase modules are half-height, dual-channel modules that provide key trust numbers to monitoring modules in the 3500 rack. This module receives the input signal from the eddy current probe or magnetic pickup and converts the signal into a digital key trust signal indicating when the key phase mark on the axis coincides with the key phase sensor. The 3500 mechanical protection system can accept up to 4 Keyphasor signals (normal configuration) and up to 8 Keyphasor signals (paired configuration).