Bently Nevada | Probe Proximity Vibration | 21504-28-68-05-02

Bently Nevada 21504-28-68-05-02 Proximity Vibration Probe – Precision Sensor for Industrial Use

What It Is

This is a new, factory-sealed proximity vibration probe from Bently Nevada. It helps check machine health by measuring vibration accurately, even in tough environments.

Model Numbers Explained

The full model is 21504-28-68-05-02. Here’s what each part means:

28: Unthreaded length – 2.8 inches
68: Case length – 6.8 inches
05: Total length – 0.5 meters (with a small range of change: +0.13m/-0.05m)
02: Connector type – Small male coaxial

Key Specs

Brand: Bently Nevada
Model: 21504-28-68-05-02
Power: Needs -17.5Vdc to -26Vdc (max 12mA)
Range: Measures up to 80 mils (2.0mm), starting 10 mils (0.25mm) from the probe tip
Accuracy: 200mV/mil (7.87V/mm), with ±4% error when calibrated as a system
Frequency: Works from 0-10kHz (0-600,000cpm)
Temp Range: Proximitor (-51°C to +100°C); Probe/Cable (-34°C to +177°C)
Weight: 1.3 lbs (0.59kg)

How to Install

Has 3/8-24 threads for easy fixing. No lead armor makes setup simple. Keep a gap of 10-90 mils for best results.

What It Works With

Resists common industrial liquids: air, water, lube oil, ammonium hydroxide, 10% sulfuric acid, MEK, DMF. Works in wet air (up to 95% humidity, no condensation).

What’s in the Box

Comes in a factory-sealed pack with the probe, extension cable, and small male coaxial connector.

Download PDF file here:7200 Proximity Transducer Systems