EPRO CON021 PR6423/10R-030 Eddy Current Sensor Kit

Configured for non-contact shaft displacement measurement and signal conditioning in turbomachinery protection systems, the EPRO CON021 PR6423/10R-030, also cataloged as the CON021 / PR6423/10R-030 Eddy Current Sensor Kit, provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• PR6423: Base series identifier for non-contact eddy current proximity probe assemblies.
• 10R: Designates an 8 mm tip diameter sensor configuration with reverse-mounting capability or standard thread pitch option.
• -030: Denotes a total uncompensated integral cable length of 3.0 m.
• CON021: Dedicated DIN-rail mounted signal converter unit providing probe driver excitation and signal conditioning to a standardized current loop output.

Hardware Specifications

Eddy Current Probe Scaling & Gap Voltage Calibration

The eddy-current probe scaling depends directly on the electromagnetic characteristics of the target material and proper gap voltage validation (-10 VDC targets). The CON021 driver conditions the raw high-frequency impedance changes caused by rotor dynamics into a linear 4-20 mA loop current. Maintaining precise mechanical gap distance during probe installation prevents signal saturation, while matched coaxial line impedance ensures cross-talk suppression and maintains high signal integrity across the entire monitoring chain.

Frequently Asked Questions

Q: What power source does the CON021 signal converter require to operate?

A: The CON021 module requires an external 24 VDC supply to power its internal oscillator and signal conditioning circuitry.

Q: Can the PR6423/10R-030 probe be connected directly to a PLC analog input card without the CON021 converter?

A: No. The passive PR6423/10R-030 proximity probe outputs a high-frequency impedance variation and requires the CON021 converter unit to provide high-frequency excitation and convert raw sensor data into a calibrated 4-20 mA output.

Q: What is the impact of altering the 3.0 m cable length on system measurement accuracy?

A: Altering the uncompensated 3.0 m total cable length alters the internal system inductance and capacitance balance, which degrades probe calibration accuracy and linearity across the measurement range.

Field Installation Guidelines

Mount the CON021 converter securely onto a standard 35 mm DIN rail inside a protective control cabinet to shield the electronics from ambient moisture and dust. When installing the PR6423/10R-030 sensor head, maintain at least 5 full thread engagements on the mounting bracket and verify clearance from surrounding metallic structures to avoid probe field side-effects. Route the 3.0 m coaxial cable away from high-voltage AC lines to minimize electromagnetic interference, and verify the probe gap voltage using a multimeter to confirm proper mechanical positioning prior to system commissioning. Ensure all cable shields connect to a clean single-point signal ground terminal.