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SKU: PR6424/000-000 CON21

Emerson PR6424/000-000 CON21 EPRO Proximity Sensor

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The Emerson PR6424/000-000 CON21, also cataloged as the PR6424/000-000 CON21 Proximity Sensor, operates as a dedicated hardware component for non-contact vibration and displacement measurement within machinery protection systems.

Hardware Specifications

ParameterSpecification
ModelPR6424/000-000 CON21
BrandEmerson
OriginUSA
Weight0.26 kg
Dimensions16 x 16 x 2 cm
Operating TempStandard industrial range
Power ConsumptionPassive/Loop powered
System CompatibilityEPRO Machinery Protection

Mechanical Monitoring & Eddy-Current Performance

The PR6424 series utilizes eddy-current principle-based sensing to detect shaft displacement and vibration relative to the probe tip. Operators must calibrate the system to ensure correct scaling, as the proximity to the target surface directly alters the output voltage. Validation of the gap voltage within -10 VDC targets remains necessary during the initial installation to guarantee linear sensor response. Proper shielding and implementation of cross-talk suppression techniques between adjacent probes prevent signal interference and ensure data integrity within the rotor dynamics monitoring architecture.

Frequently Asked Questions

Q: Does this sensor require external signal conditioning for operation?

A: Yes, the probe requires an associated EPRO driver or signal converter to translate the raw eddy-current signal into a proportional 4-20 mA or voltage output for the monitoring system.

Q: Can the probe tip be mounted in contact with the rotating shaft?

A: No, the sensor functions on a non-contact basis. Direct contact will damage the probe tip and disrupt the eddy-current field, leading to inaccurate measurement data.

Field Installation Guidelines

  • Mount the sensor probe securely using the specified mounting bracket to prevent mechanical resonance or unintended movement.
  • Ensure the target area on the rotating shaft is free of scratches, burrs, or material discontinuities to maintain measurement linearity.
  • Install the coaxial signal cable away from high-voltage power lines to minimize electromagnetic interference (EMI) ingress.
  • Verify the physical gap between the probe tip and the target surface using a calibrated feeler gauge before system energization.
  • Ground the cable shield at the monitoring system terminal block only to prevent ground loop currents.
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Emerson PR6423/000-131 CON041 EPRO Eddy Current Sensor

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The Emerson PR6423/000-131 CON041, also cataloged as the PR6423/000-131 Eddy Current Sensor, operates as a dedicated hardware component for non-contact shaft displacement and vibration measurement within EPRO machine monitoring systems.

Hardware Specifications

ParameterSpecification
ModelPR6423/000-131 CON041
BrandEmerson
Product RangeEPRO
Module TypeEddy Current Sensor
OriginUSA
Weight0.24 kg
Dimensions2 x 15 x 15 cm
Operating Temp-35 to 180 deg C
Power ConsumptionPassive sensor coil (driven by transmitter)
HS Code8537101190
StatusDiscontinued (Dec 31, 2018)

Process Control and DCS Characteristics

  • Generates high-frequency electromagnetic fields to detect micrometer-scale gap variations against target metallic shaft surfaces.
  • Transmits raw high-frequency signal outputs to signal converters or 4-20 mA HART loop protocol transmitters for system logging.
  • Provides high linearity and channel-to-channel isolation across multi-channel turbomachinery monitoring racks.
  • Accepts integration with field junction boxes, utilizing cold junction compensation routines where ambient temperature shifts affect signal conditioning hardware.

Frequently Asked Questions

Q: What signal conditioning unit is required to drive the PR6423/000-131 probe?A: The sensor coil requires a matching CON041 transmitter or signal converter to supply the excitation frequency and process raw impedance changes into normalized voltage signals.Q: How does cable length affect calibration on this eddy current sensor?A: System calibration depends on the total electrical length of the probe and extension cable assembly; cable substitutions alter system tuning and impedance scaling.

Field Installation Guidelines

  • Verify mechanical target clearance to prevent physical impact between the probe tip and rotating shaft during machine startup.
  • Route sensor lead cables through grounded metallic conduit to suppress ambient electromagnetic interference.
  • Maintain a minimum cable bending radius of 30 mm to avoid damaging internal coaxial conductors.
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Configured for non-contact shaft vibration and axial displacement measurement in EPRO machinery monitoring systems, the Emerson PR6423/01R-040 CON021 (PR6423/01R-040 Eddy Current Sensor) provides direct physical signal conditioning for rotating element health monitoring.

Hardware Specifications

ParameterSpecification
ModelPR6423/01R-040 CON021
BrandEmerson
Product RangeEPRO
Module TypeEddy Current Sensor
OriginUSA
Weight0.28 kg
Dimensions20 x 20 x 4 cm
Operating Temp-35 to 180 deg C
Power ConsumptionPassive sensor coil (driven by signal converter)
HS Code8537101190
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Process Control and DCS Characteristics

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  • Maintains measurement accuracy during temperature variations using cold junction compensation (CJC) circuits in the matching CON021 signal conditioning unit.

Frequently Asked Questions

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Field Installation Guidelines

  • Verify mechanical clearance between the probe tip and target shaft face prior to power up to prevent physical impact damage.
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  • Observe a minimum 30 mm cable bend radius during routing to protect internal conductor shielding.
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Hardware Specifications

ParameterSpecification
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BrandEmerson
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Mechanical Monitoring & TSI Characteristics

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Frequently Asked Questions

Q: What is the recommended procedure for verifying the sensor gap voltage?A: You must position the probe at the specified distance from the rotor surface and adjust the axial mounting until the output voltage aligns with the -10 VDC target, ensuring the measurement remains within the linear sensing zone.Q: How do you prevent signal interference in proximity measurements?A: You must maintain the manufacturer-specified minimum spacing between adjacent probes and ensure proper grounding of the coaxial signal cable shield to mitigate electromagnetic coupling and noise.

Field Installation Guidelines

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  • Calibration Verification: You must perform a static gap adjustment using a calibrated feeler gauge during cold standby conditions. You should verify that the transducer output matches the -10 VDC baseline before confirming the system is operational.
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  • Shielding Continuity: You must terminate the cable shield at a single, dedicated instrumentation ground point within the terminal cabinet. You should conduct a resistance check to confirm shield continuity, which minimizes ground-loop-induced noise in the vibration monitoring signal.
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