Description
Emerson PR9268-202-100
Technical Specifications
- Linear measuring range: 2 mm
- Total cable length: 10 meters
- Probe tip operating temperature: -40°C to 180°C
- Extension cable operating temperature: -40°C to 120°C
- Non-contact measurement principle
- Threaded mounting body for installation bracket assembly
Functional Features Non-contact measurement eliminates mechanical wear between probe and rotating metal shaft. High resolution captures tiny shaft displacement changes. Wide temperature range adapts high temperature environment inside bearing housings. Resists oil mist, water vapor and mechanical vibration in equipment casing. Stable signal output supports continuous long-term shaft vibration and axial thrust monitoring.
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 for rapid shaft position change
- Stable performance under oil mist environment
- Low temperature drift of measurement reading
Material Composition Probe tip uses special ceramic insulation material. Probe shell is stainless steel with anti-corrosion treatment. Internal coil adopts high temperature resistant enameled wire. Extension cable has high temperature resistant insulating jacket and full metal shielding layer. Connector parts adopt corrosion resistant alloy.
Structural Characteristics Cylindrical threaded probe body for mounting onto bearing housing via installation bracket. Integrated extension cable connected to probe body. Metal shielding layer wrapped inside cable reduces external electromagnetic interference. Precision coil sealed inside ceramic tip. Lock nut used to fix probe position after gap adjustment.
Working Principle High frequency excitation signal from signal driver module is sent to coil inside probe tip. Alternating magnetic field forms on probe surface and induces eddy current on metal rotating shaft surface. The impedance of probe coil changes with the gap between probe and shaft. The driver module converts impedance variation into continuous analog voltage signal. Voltage value corresponds to gap distance, so shaft displacement and vibration data can be calculated.
Installation Requirements Install probe on bearing housing through matching mounting bracket. Adjust initial gap between probe tip and shaft surface to the middle point of linear range. Tighten probe lock nut fully to prevent position drift caused by vibration. Route probe cable separately from high power cables. Fix cable with cable clamps to avoid pulling force acting on probe body.
Use Precautions Avoid collision of probe tip during installation, ceramic tip is fragile. Do not scratch shaft surface near probe installation position. Prevent oil and dirt accumulation on probe tip. Check cable insulation integrity regularly. Do not bend the cable sharply at small radius.
