Epro PR 6426/000-140 Reverse Mount Sensor

Product Overview

The PR 6426/000-140 represents the pinnacle of non-contact displacement technology for critical rotating machinery. Designed by Epro (Emerson), this eddy current sensor excels in measuring turbine shaft vibration and axial thrust with micron-level precision. Its unique reverse-mount geometry allows for external installation into confined internal spaces, making it the go-to solution for high-density power plant and petrochemical applications.

Technical Configuration

Integrated Signal Conversion

Unlike traditional probes requiring external drivers, this unit features the Con021 integrated electronics. It converts displacement directly into a robust 4-20 mA industrial signal, simplifying the hardware loop and reducing potential failure points across the signal chain.

Reverse Mount Engineering

The threaded body is optimized for "outside-in" installation. This allows technicians to calibrate the sensor gap from the exterior of the machine housing, significantly reducing downtime and labor costs during critical maintenance intervals.

Technical Specifications

Installation Guide

For optimal accuracy, set the sensor air gap to the 12 mA midpoint when the target is at rest. The PR 6426/000-140 requires a target area at least three times the probe diameter to avoid edge interference. Ensure the 5-meter cable maintains a minimum bend radius of 30 mm to protect signal integrity and prevent shielding fatigue.

Engineering Advantages

This sensor provides laboratory-grade precision in harsh industrial zones. Its PEEK-protected tip resists oil, steam, and chemical corrosion, ensuring a stable 12-month operation cycle in temperatures up to 120°C. By outputting a standardized 4-20 mA signal, it integrates seamlessly into existing PLC or DCS architectures without the need for proprietary rack-based monitors.

Technical FAQs

Q1: Can this sensor be installed while the machine is running?

A1: While the physical mount allows external access, for safety and precise gap calibration (setting the 12 mA baseline), we recommend installation during machine standstill or slow-roll conditions.

Q2: What happens if the cable is cut or shortened?

A2: The PR 6426/000-140 is factory-calibrated with its specific 5-meter cable. Altering the length will change the system impedance and compromise the 1.5% linearity specification.

Q3: Is a separate transmitter required?

A3: No. The integrated Con021 design means the sensor body handles all signal processing, outputting 4-20 mA directly to your control system terminal.