Technical Specifications Applicable Probe: 3307 series high temperature wide range proximity probe Power Supply: -24V DC Output Signal: Linear gap voltage signal Operating Temperature: -40℃ ~ +70℃ Mounting: Bracket mounting Housing: Cast aluminum alloy shielding housing
Functional Features Special matched design for high temperature large range eddy current proximity probe. Generate high-frequency excitation signal for high temperature large probe coil. Convert probe impedance variation into linear analog voltage signal. Built-in self-diagnosis function for probe cable open and short circuit. Aluminum alloy shielding housing to resist industrial electromagnetic interference. Screw terminals for convenient field wiring and maintenance.
Application Scenarios Pre-amplifier for high temperature wide range eddy current probe measuring loop. High temperature section shaft vibration monitoring of large steam turbine and gas turbine. Large thrust displacement measurement of high temperature heavy-duty compressor. Power plant high temperature large rotating machinery online protection system. Petrochemical plant high temperature critical heavy equipment condition monitoring.
Structural Characteristics Cast aluminum alloy metal housing with mounting lugs. Internal PCB integrated dedicated oscillator, signal conditioning and fault diagnosis circuit. Screw terminal block for power supply, probe signal and output signal. Cable entry openings for field wiring. Shielded metal housing structure.
Working Principle Dedicated oscillator circuit generates high-frequency excitation signal matched for high temperature large probe coil. Eddy current induced on rotor surface changes coil impedance with large gap distance. Signal conditioning circuit converts impedance variation into linear voltage signal proportional to gap value. Diagnostic circuit continuously monitors the integrity of high temperature probe measuring loop.
Installation Requirements Fix proximitor to rigid mounting bracket, keep away from high temperature source. Connect high temperature probe extension cable to signal terminals according to wiring drawing. Connect -24V DC power supply without polarity reversal. Ground aluminum housing to system protective ground bus. Separate signal cables from high voltage power cables.
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