Bently Nevada – 21504-04-12-05-02 – Probe Proximity Vibration

Bently Nevada 21504-04-12-05-02 Proximity Vibration Probe System

Quick Intro

A brand-new, factory-fresh vibration monitoring tool from Bently Nevada. Perfect for precise checks on rotating machinery like turbines and pumps.

Model Code Breakdown

21504-04-12-05-02 tells you key specs:

04: Unthreaded length – 40mm (no extra threading)
12: Case length – 120mm (4.7 inches approx)
05: Total length – 0.5m (20 inches) (can be +0.13m/-0.05m)
02: Connector – Small male coaxial (easy to link)

Key Tech Features

Measurement Basics

Range: 80 mils (2mm) – starts ~10 mils (0.25mm) from probe tip
Accuracy: 200mV/mil (7.87V/mm) – ±4% when set up as a system
Linearity: Within 0.8 mils (0.02mm) (system-calibrated)

Power & Signal

Power needed: -17.5Vdc to -26Vdc (max 12mA)
Output: Steady analog signal (clear vibration data)

Work Conditions

Proximitor temp: -60°F to +212°F (-51°C to +100°C)
Probe & cable temp: -30°F to +350°F (-34°C to +177°C)
Humidity: Up to 95% (no water drops)
Resists: Air, water, oil, 10% sulfuric acid, MEK, DMF (8mm probe only)

Physical Details

Probe size: 8mm diameter (standard)
Threads: 3/8-24 (easy to install)
Weight: 1.3 lbs (0.59kg) (lightweight)

Install & Fit

Easy to put in: Use 3/8-24 threads and small coaxial connector.
Works with Bently Nevada 3500/42M modules and 7200 monitors.

What’s Inside

Factory-sealed box has: Probe, extension cable, and connector (as per model).
Download PDF file here:7200 Proximity Transducer Systems