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The PR6423/018-040 CON021 is an industrial-grade non-contact eddy current sensor measurement system. Manufactured by Emerson Electric Co., Ltd., this system is specifically designed for monitoring shaft vibration, shaft displacement, and rotational speed in large rotating machinery.
4-meter heavy-duty armored cable
Speed measurements and keyphasor signals
Radial shaft vibration (dynamic) and axial displacement (static)
The Emerson EPRO PR6423/018-040 combined with the CON021 signal converter is an industry-standard, high-precision non-contact eddy current displacement sensor system . Engineered specifically for critical turbomachinery, this system delivers exceptional reliability in measuring shaft vibration, axial displacement, and rotational speed. By penetrating oil films without physical contact, it captures real-time micron-level machine behavior to prevent catastrophic equipment failures.Fully compliant with API 670 standards, this heavy-duty sensor and proximitor configuration is trusted globally by power plants, oil refineries, and heavy industrial facilities to protect their most valuable rotating assets.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
EPRO PR6423/018-040 CON021 Eddy Current Sensor Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Thermal Power
Monitoring bearings in steam turbine-generator sets, high-power boiler feedwater pumps, and forced/induced draft fans.
Hydroelectric Power
It measures the shaft runout (eccentricity) and thrust bearing displacement, protecting the unit from mechanical failure caused by hydraulic imbalance forces.
Petroleum Refining
Monitoring core large-scale centrifugal compressors in catalytic cracking and hydrocracking units.
Iron, Steel & Metallurgy Industry
Monitoring blast furnace blowers, Top Gas Recovery Turbine (TRT) units, and heavy rolling mills.
Cement Manufacturing Industry
It delivers continuous monitoring of sleeve bearings on large exhaust fans under intense vibration and heavy dust, preventing rapid bearing wear due to oil starvation or overloading.
Pulp & Paper Industry
It reviews the bearing health of critical turbine fans in the high-temperature, high-humidity drying section, eliminating unplanned downtime that could scrap entire paper production rolls.
When using the PR6423/018-040 CON021 system you must strictly observe three critical factors. First, avoid target material mismatch because the factory calibration is optimized for AISI 4140 steel and any other metallurgy requires recalibration. Second, precisely adjust the initial installation voltage to the linear center point (typically -10V DC) via a multimeter to set the correct physical gap. Third, ensure proper cable care and barrier grounding by maintaining the minimum bend radius of the 4-meter armored cable and utilizing intrinsic safety barriers in hazardous areas.
What is the PR6423/018-040 CON021 eddy current sensor system?
It is an industrial-grade measurement system consisting of a non-contact 8mm eddy current displacement sensor (PR6423) and a signal converter/proximitor (CON021), primarily used for monitoring the dynamic and static conditions of rotating machinery.
What is the basic operating principle of PR6423/018-040 CON021?
The probe generates a high-frequency alternating magnetic field, inducing eddy currents on the metallic rotating shaft, causing a change in coil impedance. The CON021 converts this change into an electrical signal proportional to the gap.
What types of equipment typically use PR6423/018-040 CON021 for monitoring?
It is widely used in large, critical rotating machinery (turbomachinery) such as steam turbines, gas turbines, hydro turbines, industrial compressors, large pumps, and fans.
What does PR6423 in the model number represent?
"PR6423" is the standard product series number from Emerson EPRO, specifically indicating an 8mm probe diameter eddy current displacement sensor.
How do you properly install and adjust the PR6423/018-040 CON021 system?
The sensor must be threaded and securely mounted onto the machine bearing housing. During installation, monitor the output of CON021 using a voltmeter and adjust the physical distance from the shaft until the output reaches the initial linear gap voltage (typically -10V DC, corresponding to approx. 1.5mm gap).
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