Overview
The Emerson EPRO CON011 + PR6424/010-140 serves as the primary PR6424/010-140 eddy current sensor system utilized to execute shaft displacement and vibration measurement across EPRO machinery monitoring platforms. The system converts probe-to-target distance variations into proportional electrical signals for turbomachinery condition monitoring loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CON011 + PR6424/010-140 |
| Brand | Emerson EPRO |
| Product Type | Eddy Current Sensor Systems |
| Origin | Germany |
| Weight | 0.72 kg |
| Dimensions | Not specified in supplied data |
| Operating Temp | PR6424/010-140: -35 to 150 deg C; CON011: -30 to 100 deg C |
| Probe Tip Diameter | 16 mm |
| Sensitivity / Linearity | 4 V/mm (101.6 mV/mil), <= ±1.5% |
| Nominal Air Gap | 2.7 mm |
| Static Measurement Range | ±2.0 mm |
| Dynamic Measurement Range | 0 to 1,000 um |
| Long Term Drift | < 0.3% |
| Temperature Error | <4%/100 deg K |
| Target Material | Ferromagnetic steel |
| Signal Converter Protection | IP65 |
| Signal Converter Housing | GD-ALSi9Cu3 die-cast aluminum alloy |
| Mounting Method | 4 x M5 screws |
Eddy Current Measurement and Signal Processing Characteristics
The PR6424/010-140 probe operates through an electromagnetic field generated at the sensor tip. Changes in the distance between the probe and conductive rotating shaft material modify the eddy current response, allowing measurement of relative shaft movement.
The CON011 converter supplies excitation for the probe circuit and processes the high-frequency sensor signal into proportional electrical outputs for connection with machinery protection systems, PLC interfaces, or DCS monitoring channels.
For EPRO machinery protection applications, the measurement chain requires correct probe scaling, gap voltage validation, and rotor dynamics analysis. The eddy-current loop performance depends on probe installation geometry, target surface condition, cable arrangement, and signal converter calibration.
Frequently Asked Questions
Q: What measurement principle is used by the PR6424/010-140 probe?
A: The PR6424/010-140 uses a non-contact eddy current measurement principle. The probe detects changes in electromagnetic field response caused by variations in the distance between the sensor tip and a conductive target.
Q: What is the nominal operating air gap of the sensor probe?
A: The specified nominal air gap is 2.7 mm. The system provides a static measurement range of ±2.0 mm around the operating position.
Q: What installation factors affect measurement accuracy?
A: Probe alignment, target surface condition, cable routing, shielding connection, and converter calibration influence measurement signal quality.
Field Installation Guidelines
Install the PR6424/010-140 probe with the sensing tip aligned perpendicular to the monitored shaft surface. Maintain the specified mechanical gap during commissioning and verify the measurement output after installation.
Route sensor cables separately from high-voltage power lines and switching circuits to reduce electromagnetic interference. Connect cable shielding according to the machinery protection system grounding practice.
The CON011 converter should be mounted on a stable surface using the specified mounting points. Verify supply polarity, output wiring, and signal reference connections before system energization.
During commissioning, confirm probe gap position, output signal response, and monitoring channel scaling against the configured protection system parameters.
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