Emerson PR6426/00R-030 eddy-current proximity probe proximitor

he Emerson PR6426/00R-030 is a high-temperature eddy-current proximity probe (proximitor) from the Bently Nevada product line, designed for vibration and displacement monitoring in extreme environments. Here are its key details:

Key Specifications

Parameter Details

Model PR6426/00R-030

Type High-temperature eddy-current sensor

Measurement Range 0 to 2 mm (calibration-dependent)

Output Signal -2 to -18V DC (proportional to gap)

Power Supply -24V DC (from Bently Nevada 3300/3500 monitor)

Cable Length 9 meters (30 feet) with high-temp cable

Temperature Range Up to 175°C (347°F) at probe tip

Frequency Response 0 to 10 kHz

Target Material Ferrous metals (steel recommended)

Applications

Gas/steam turbines (hot sections)

High-pressure compressors

Machinery in extreme heat environments

Critical vibration monitoring where standard probes fail

Key Differences vs Standard PR6426/000-030

Feature PR6426/00R-030 PR6426/000-030

Temperature Rating Up to 175°C Up to 120°C

Cable Type Special high-temp cable Standard cable

Typical Use Hot gas paths, turbine casings General machinery

Installation Notes

Mounting:

Install with 1.0-1.5mm gap to target

Ensure proper clearance from hot surfaces

Cable Routing:

Use high-temperature cable clamps

Keep away from direct flame/abrasion

Calibration:

Set gap voltage to -10V DC at operating temperature

Allow for thermal expansion effects