EPRO PR6423/005-030+CON021 Current Sensor System

The Epro PR6423/005-030+CON021 serves as the primary PR6423 Eddy Current Sensor utilized to execute non-contact radial/axial shaft displacement monitoring across AMS 6500 platforms. It operates as an 8 mm inductive proximity transducer pair coupled with a CON021 signal converter to transform physical target gaps into linear high-frequency electrical signals. The sensor tracks dynamic vibration and target gap variation relative to ferromagnetic shaft surfaces.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

When integrated into process automation control loops via the CON021 signal processing unit, raw electromagnetic field variations undergo precise signal transformation. Input interface cards incorporate channel-to-channel isolation to prevent ground loop noise transmission across adjacent monitoring channels. The conditioned analog signals feed directly into process management architectures, ensuring continuous static displacement tracking and dynamic vibration measurement across rotating machinery trains.

Frequently Asked Questions

Q: What target shaft material is calibrated for the PR6423/005-030+CON021 sensor?

A: The sensor's Incremental Scale Factor (ISF) is factory calibrated to standard 42CrMo4 (AISI/SAE 4140) ferromagnetic steel. Alternate shaft material calibrations are available on request.

Q: What is the minimum shaft diameter required for accurate displacement measurement?

A: The minimum target shaft diameter for maintaining linear sensor scaling is 25 mm (0.79 in).

Q: What are the distinct temperature limits for the sensor head versus the cable connector?

A: The sensor head and integral 1 m PTFE cable segment withstand continuous operational exposure from -35 to +200 deg C (-31 to +392 deg F), while the extension cable and nickel-plated brass connector are rated from -35 to +150 deg C (-31 to +302 deg F).

Field Installation Guidelines

• Mechanical Thread Engagement: Thread the stainless steel sensor body into the mounting bracket using hand tools, ensuring a minimum of 5 full mechanical threads of engagement before securing the locking nut.
• Initial Gap Alignment: Set the 0.5 mm (20 mils) initial air gap during static machine shutdown while measuring the DC voltage output at the CON021 converter terminals to establish proper midpoint bias voltage.
• Cable Protection & Bend Radii: Enclose the PTFE cable in flexible metallic conduit to protect against physical abrasion. Maintain a minimum cable bend radius of 25 mm to prevent structural coaxial damage.
• Single-Point Shield Grounding: Connect the coaxial cable shield to ground at a single point on the CON021 signal converter chassis to eliminate ground loop interference.