Description
Emerson PR6423-002-041
Technical Specifications
- Measuring range: 2mm linear measurement range
- Cable length: 4 meters
- Operating temperature of probe tip: -40°C to 180°C
- Operating temperature of extension cable: -40°C to 120°C
- Output signal type: analog voltage signal
- Non-contact measurement principle
Functional Features Non-contact measurement avoids mechanical wear between probe and rotating shaft. High measurement resolution for tiny shaft displacement changes. Wide working temperature range adapts to high temperature environment near rotating equipment. Strong resistance to oil mist and water vapor in equipment casing. Stable output signal for long term continuous monitoring. Suitable for continuous monitoring of shaft vibration and axial thrust position.
Application Scenarios Installed on steam turbines, centrifugal compressors, large pumps and fans in power plants and petrochemical plants. Used for shaft relative vibration measurement, axial thrust displacement monitoring and shaft position monitoring.
Performance Parameters
- High linearity within full measuring range
- Fast response to rapid shaft position change
- Stable performance under oil mist environment
- Low temperature drift of measurement value
Material Composition Probe tip uses special ceramic insulation material. Probe shell is made of stainless steel with anti-corrosion treatment. Internal coil uses high temperature resistant enameled wire. Extension cable has high temperature resistant insulating jacket and metal shielding layer. Connector parts adopt corrosion resistant alloy.
Structural Characteristics Cylindrical threaded probe structure, convenient for installation on equipment bearing housing. Thread specification for mounting bracket assembly. Integrated extension cable connected to probe body. Metal shielding layer wrapped inside cable reduces external electromagnetic interference. Precision coil is sealed inside ceramic tip.
Working Principle High frequency excitation signal from signal converter is sent to the coil inside probe tip. Alternating magnetic field forms on probe surface and induces eddy current on the surface of metal rotating shaft. The impedance of probe coil changes with the gap between probe and shaft. The converter converts impedance variation into continuous analog voltage signal. The voltage value corresponds to the gap distance, so shaft displacement and vibration can be calculated.
Installation Requirements Install the probe on the bearing housing through matching mounting bracket. Adjust the initial gap between probe tip and shaft surface to the middle point of linear range. Fix probe lock nut tightly to prevent position drift caused by vibration. Route probe cable separately from high power cables. Fix cable with cable clamp to avoid pulling force on probe body.
Use Precautions Avoid collision of probe tip during installation, ceramic tip is fragile. Do not scratch shaft surface near probe. Prevent oil and dirt accumulation on probe tip. Check cable insulation integrity regularly. Do not bend the cable sharply.
