EPRO PR6424010-130 + CON011

1.3 Core Technical Specifications

Probe (PR6424010-130)

• Sensing Head Diameter: 16 mm
• Total Probe Length: 130 mm
• Standard Cable Length: 10 m non-armored PTFE cable
• Nominal Static Measuring Range: ±2.0 mm
• Standard Sensitivity: 4 V/mm, linearity error ≤ ±1.5% FS
• Recommended Minimum Shaft Diameter for Measurement: ≥80 mm
• Operating Temperature of Probe Head: -35°C ~ +180°C
• Instantaneous Short-Time Temperature Resistance: 300°C (<4 hours)
• Pressure Resistance of Probe Head: 2000 hPa
• Target Calibration Material: 42CrMo4 ferromagnetic alloy steel

Pre-converter (CON011)

• Input Compatibility: PR6422/PR6423/PR6424/PR6425/PR6426 full probe series
• Frequency Response (-3dB): 0 Hz ~ 20 kHz
• Rise Time: <15 μs
• Power Supply Input: -23 VDC ~ -32 VDC
• Output Voltage Range: -2 V ~ -20 V linear analog signal
• Environmental Protection Class: IP65, dust-tight and jet-water resistant
• Operating Temperature Range: -30°C ~ +100°C
• Shock & Vibration Resistance: 5g at 60Hz
• Housing Weight: 300 g, die-cast aluminum housing

1.4 Function Features

1. Non-contact measurement principle, zero mechanical abrasion between probe and measured metal surface
2. Factory pre-calibrated matching of probe and pre-converter, no secondary field calibration required
3. Wide frequency bandwidth supports both slow static shaft offset and high-frequency dynamic vibration detection
4. Rugged industrial housing, stable performance under severe temperature and vibration working conditions
5. Standard analog voltage output directly compatible with DCS, PLC, vibration monitoring racks and protection trip systems
6. Integrated short-circuit and overvoltage protection inside CON011 preamplifier to prevent equipment burnout

1.5 Working Principle

1.6 Material Composition & Structural Characteristics

PR6424 Probe

• Sensing Sleeve: 316 stainless steel, anti-corrosion, high temperature resistant
• Internal Coil Winding: High-temperature enameled copper wire, ceramic insulation support
• Cable Outer Jacket: PTFE fluoroplastic, oil-resistant, high-temperature resistant, low signal attenuation
• Mounting Structure: Standard M10 external mounting thread on probe body

CON011 Pre-converter

• Outer Housing: Die-cast aluminum alloy, anti-electromagnetic interference shielding
• Sealing Material: Fluororubber gaskets for IP65 waterproof and dustproof sealing
• Internal Circuit Board: High-temperature resistant FR4 substrate, military-grade signal processing chips
• Mounting Bracket: Integrated stainless steel L-shaped fixed feet for panel or cabinet wall installation

1.7 Application Scenarios

• Steam turbine, gas turbine, hydroelectric turbine shaft radial vibration & axial thrust displacement monitoring
• Large centrifugal compressor, axial flow fan, high-power water pump bearing wear and shaft eccentricity detection
• Power plant, petrochemical refinery, metallurgical heavy industry rotating machinery protection safety systems
• Generator rotor position and key phase speed measurement for machine trip protection logic

1.8 Installation Requirements

1. Mount the PR6424 probe via the M10 thread bracket, fix the probe parallel/perpendicular to the measured metal shaft surface, adjust the air gap to the linear midpoint (2.7 mm standard air gap) before locking the mounting nut
2. Route the probe cable with a minimum bending radius of 10 times the cable outer diameter; avoid sharp metal edges and high-temperature pipelines to prevent cable insulation damage
3. Install the CON011 pre-converter inside a control cabinet or sealed junction box, keep it away from high-power frequency converters, motors and high-voltage cables to avoid electromagnetic signal interference
4. Complete reliable single-point grounding for the pre-converter housing and probe cable shielding layer, grounding resistance ≤4 Ω
5. Connect negative DC power supply strictly according to terminal marking; reverse power supply will permanently damage internal circuit components

1.9 Usage Precautions

1. The probe must only measure ferromagnetic metal targets (steel, iron alloy); non-ferrous metals (aluminum, copper, brass) will cause severe linearity deviation and measurement failure
2. Do not scratch, collide or deform the front sensing end face of the probe; surface scratches will change coil magnetic field distribution and reduce measurement accuracy
3. Avoid long-term continuous operation of the probe head above 200°C; high-temperature creep will damage internal coil insulation
4. Do not cut, splice or extend the probe cable arbitrarily; cable length change will break factory linear calibration and lead to inaccurate output signals
5. Regularly inspect CON011 pre-converter housing sealing gaskets; aging gaskets will cause water and dust ingress leading to circuit short circuit
6. Strictly avoid liquid oil, chemical corrosive liquid splashing onto the probe head and pre-converter housing