Emerson PR9268/706-000 | Absolute Electrodynamic Velocity Sensor

Product Description

Overview

The EPRO PR9268/706-000 from Emerson is a horizontal electrodynamic velocity sensor designed for absolute casing vibration measurement in industrial machinery. Unlike proximity probes, it measures vibration directly on machine casings, providing critical data for machinery protection and predictive maintenance.

Operating on the moving coil electrodynamic principle, it generates a voltage proportional to vibration velocity. Moreover, its high sensitivity and linear response across a wide frequency range make it ideal for low-frequency monitoring of turbines, compressors, pumps, and gearboxes. The rugged IP67 housing ensures reliable performance under harsh industrial conditions.

Technical Specifications

• Product Type: Electrodynamic Velocity Sensor

• Model Number: PR9268/706-000

• Manufacturer: Emerson / EPRO

• Measurement Principle: Electrodynamic (moving coil in magnetic field)

• Orientation: Horizontal (±30°)

• Sensitivity: 28.5 mV/mm/s (723.9 mV/in/s) ±5% @ 80 Hz, 20 °C, 100 kΩ load

• Frequency Range (±3 dB): 4 Hz – 1,000 Hz (240 – 60,000 cpm)

• Natural Frequency: 14 Hz ±7% @ 20 °C

• Measurement Range: ±1,500 µm (59,055 µin)

• Maximum Acceleration: 10 g continuous, 20 g intermittent

• Maximum Transverse Acceleration: 2 g

• Operating Temperature Range: –20 °C to +100 °C (–4 °F to +180 °F)

• Storage Temperature Range: –40 °C to +100 °C

• Humidity: 0–100%, non‑condensing

• Protection Class: IP67 (dust-tight, water-resistant)

• Housing Material: Rugged stainless steel

• Cable Options: Integral cable or connector variants

• Compliance: API 670 compliant

• Product Origin: Germany

• Payment: T/T

FAQ

Q1: What does the PR9268/706-000 measure?
A1: It measures absolute casing vibration, providing voltage proportional to vibration velocity.

Q2: Is it suitable for low-frequency vibration monitoring?
A2: Yes, it is highly sensitive and effective from 4 Hz up to 1,000 Hz.

Q3: Can it operate in harsh industrial environments?
A3: Yes, the sensor has IP67 protection and a rugged stainless steel housing.

Q4: How is it mounted on machinery?
A4: It is horizontally mounted on machine casings, adjustable ±30° for precise alignment.

Q5: Is it API 670 compliant?
A5: Yes, it meets API 670 standards for turbomachinery vibration monitoring.