CON021+PR6424/002-030 | Emerson Epro | Eddy Current Sensor

Configured for high-frequency displacement monitoring in rotating machinery, the Emerson Epro CON021+PR6424/002-030 (CON021+PR6424) Eddy Current Sensor system provides direct physical execution of dynamic signal acquisition and conditioning for axial and radial shaft movement.

Hardware Specifications

Mechanical Monitoring and TSI Integration

The system relies on eddy-current probe scaling to convert target distance into a proportional voltage signal. Achieving valid diagnostic data requires strict gap voltage validation; the transducer must be positioned to operate within the defined nominal air gap of 2.7 mm to ensure measurement linearity. The CON021 converter processes the transducer output to achieve a sensitivity of 4 V/mm. To maintain signal fidelity in high-noise environments, the system utilizes cross-talk suppression through high-quality shielding of the Lemo-plug transducer interface. This prevents electromagnetic interference from corrupting the dynamic waveform, which is necessary for analyzing rotor dynamics such as orbital motion and shaft eccentricity.

Frequently Asked Questions

Q: Can the CON021 converter be used with different cable lengths than provided?

A: No. The CON021 and PR6424 are a calibrated signal chain. Altering the transducer cable length modifies the circuit's resonant frequency and impedance, leading to significant errors in sensitivity and linearity.

Q: What is the impact of supply voltage fluctuations on the output signal?

A: The CON021 is designed to operate within a -23 VDC to -32 VDC range. Fluctuations outside this range may impact the signal conditioning stability, potentially resulting in drift or non-linear output response during high-frequency signal peaks.

Field Installation Guidelines

1. Probe Gap Setting: Use a feeler gauge to set the sensor at the nominal 2.7 mm air gap. Ensure the measurement target is aligned with the center of the probe tip to maintain the sensitivity rating.
2. Mounting: Secure the CON021 converter using the M5 screws provided. Ensure the housing is grounded to the instrument rack to mitigate electrical noise.
3. Signal Cabling: Terminate the transducer at the CON021 using the self-locking Lemo-plug. For the supply and output terminals, use wire not exceeding 1.5 mm in cross-section to ensure secure fitment in the screw terminals.
4. Environment: Although the housing provides IP20 protection, ensure the converter is installed within an enclosure that prevents exposure to moisture or conductive dust, which can create signal leakage paths.