1. Model Code Interpretation

• 05: Eddy current probe type = 3300 XL 8mm
• 10: Probe cable length = 1.0 m
• 00: No adapter
• 000: Adapter length = 0
• 250: Probe penetration length = 2.50 inches
• 14: Velocity sensor = Velomitor piezoelectric velocity sensor
• 03: Accessory option
• 00: Without probe support / oil seal

2. Core Technical Parameters

2.1 Eddy Current Probe (3300 XL 8mm)

• Measuring function: Non-contact measurement of shaft relative radial displacement / vibration
• Linear range: 0～2 mm (0～80 mil)
• Sensitivity: 7.87 V/mm (200 mV/mil)
• Frequency response: 0～10 kHz
• Operating temperature: -51℃ ～ +177℃
• Output signal: -24～0 V DC (via proximitor)

2.2 Velomitor Velocity Sensor

• Measuring function: Absolute vibration velocity of casing; displacement available by integration
• Frequency response: 0.5～10 kHz
• Sensitivity: 20 mV/mm/s (500 mV/in/s)
• Operating temperature: -55℃ ～ +121℃
• Output signal: AC dynamic voltage

2.3 Overall Performance

• Integrated measurement: Simultaneously output shaft relative vibration, casing absolute vibration and shaft absolute motion
• Protection grade: IP67 (dustproof and waterproof)
• Housing material: 316 stainless steel, oil and corrosion resistant
• Mounting method: Installed in pairs at 90° (X / Y direction) on bearing housing

3. Key Advantages

1. Integrated design: One integrated sensor measures both shaft vibration and casing vibration, saving installation space and cost, avoiding installation deviation of separate probes.
2. Full-condition diagnosis: Able to reconstruct shaft orbit, shaft center position and casing vibration spectrum; accurately identify early faults such as unbalance, misalignment, oil whirl and rub-impact.
3. High temperature resistance: Probe withstands up to 177℃, suitable for extreme working conditions such as steam turbines and high-temperature compressors.
4. API 670 compliant: Comply with petrochemical industry standards, applicable to TSI / TDM systems of critical rotating machinery.

4. Typical Application Scenarios

4.1 Power Industry

• Steam turbine / gas turbine: X/Y direction bearing housing monitoring; protection for shaft vibration, shaft orbit and overspeed.
• Generator / exciter: Combined monitoring of rotor vibration and stator casing vibration to avoid coupled electromagnetic vibration faults.

4.2 Petrochemical Industry

• Centrifugal compressor / air separator: On-line monitoring and protection of surge, shaft displacement and vibration under high pressure and high speed conditions.
• Refining & chemical turbine: Long-term on-line monitoring in high temperature (above 150℃) and corrosive environments.

4.3 Metallurgy & Air Separation

• Blast furnace blower / axial flow fan: Early warning of bearing failure and rotor unbalance under heavy load and strong vibration conditions.

5. Application Key Points

• Installation: Equip each radial bearing with 2 sets (X/Y direction); set probe gap to 1.27 mm (zero point, -10V DC).
• Matching equipment: Matched with 3300 XL proximitor + 3500 / 3300 monitoring rack, 4-20mA signal output to DCS system.