EPRO PR6426/010-110 SN1500 Proximity Sensors

Configured for precise relative displacement and non-contact vibration measurement in turbomachinery protection systems, the Emerson PR6426/010-110 SN1500 (PR6426 Eddy Current Sensor) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Hardware Specifications

4-20 mA HART Loop Protocol and DCS Connectivity

The Emerson PR6426/010-110 SN1500 connects to a matched CON signal converter to form an LC oscillator circuit, translating metallic shaft displacement into linear voltage variations. Transmitted through signal conditioning modules, this measurement integrates into Emerson DeltaV and Ovation control systems using a standard 4-20 mA HART loop protocol to provide real-time dynamic vibration and position feedback. Dedicated channel-to-channel isolation within the transmitter interface prevents ground loop noise and cross-talk across multi-channel sensor arrays, maintaining signal purity under severe industrial EMI environments.

Frequently Asked Questions

Q: Is field recalibration required when connecting the sensor to its CON signal converter?

A: No, the sensor and matched CON converter are factory pre-calibrated. Field installation requires only physical mechanical gap positioning to establish the target baseline DC output voltage.

Q: How does the sensor detect changes in position or shaft vibration?

A: The sensor tip emits an electromagnetic field; bringing a metallic target near the tip induces eddy currents that damp the oscillation amplitude in proportion to the physical gap distance.

Field Installation Guidelines

1. Inspect the PEEK tip and threaded casing for physical damage, metallic debris, or thread burrs prior to installation.
2. Thread the sensor body into the mounting bracket while measuring the live DC bias voltage at the CON converter output terminals.
3. Position the sensor tip to achieve the specified initial mechanical gap corresponding to the baseline DC output voltage, then lock the jam nut.
4. Route all interconnecting sensor cabling through grounded metal conduit, separated from high-voltage AC power wiring and motor drive leads.
5. Ensure the cable shield drain wire terminates to the main instrument grounding bar at the rack enclosure end only.