EPRO CON041

Technical & Performance Specifications

• Compatible Probe Models: PR6424/00, PR6426, PR6454, PR6458 long-range eddy current probes
• Max Supported Probe Air Gap: 0 mm – 16 mm full linear measurement range
• Frequency Response Bandwidth (-3dB): 0 Hz ~ 15 kHz
• Signal Rise Time: ≤22 μs
• Power Supply Input: -24 V DC nominal, allowable range -23 V DC ~ -32 V DC
• Standard Linear Analog Output: -4 V DC ~ -20 V DC proportional to displacement
• Linearity Deviation Over Full Range: ≤0.5% FS
• Continuous Vibration Endurance: 5 g, 10 Hz – 2 kHz sine wave vibration
• Operating Ambient Temperature: -30°C ~ +95°C
• Protection Class: IP20 for indoor cabinet installation
• Unit Net Weight: 135 g
• Terminal Wire Capacity: Max 1.5 mm² solid/stranded copper wire
• Probe Interface: Nickel-plated self-locking LEMO circular connector
• Certifications: CE, ATEX IECEx Zone 2/22, CSA industrial safety certification

Function Features

1. High-gain oscillation drive circuit compensates signal attenuation over 10 m long probe extension cables
2. Full-range built-in linearity correction algorithm for wide 16 mm air gap measurement
3. Automatic open-circuit probe & short-circuit cable fault detection with fixed output voltage clamping for system alarm interlock
4. Internal galvanic isolation between probe input and analog output eliminates multi-channel ground loop noise
5. Thermal overload protection circuit triggers signal lockout when internal temperature exceeds 105°C
6. Dual mounting compatibility: direct panel screw mounting or DIN rail adapter bracket mounting

Working Principle

Material & Structural Composition

• Outer Housing: Die-cast lightweight LMgSi aluminum alloy with integrated passive heat sink ribs
• Main PCB: Multi-layer FR4 high-temperature circuit board with low-temperature drift precision passive components
• Connector Assembly: Nickel-plated LEMO circular probe connector; tin-plated copper screw terminal blocks for power and signal output
• Internal Potting: High-temperature epoxy resin encapsulates oscillator core to resist vibration and dust ingress

Advantage Highlights

1. Supports 16 mm maximum air gap, applicable for large slow-speed generator shafts with large assembly clearance
2. High signal gain eliminates external signal amplifiers for long-distance probe wiring layouts
3. ATEX hazardous area certification allows installation inside refinery, chemical plant and power generation classified control cabinets
4. Wide operating temperature range adapts to uncooled local machinery side cabinets
5. Built-in fault diagnosis reduces external signal detection circuit design cost
6. Vibration-resistant encapsulated internal structure maintains stable measurement on skid-mounted turbomachinery

Applicable Industries

Installation Requirements

• Mounting Standard: M5 screw direct panel mounting or 35 mm EN60715 DIN rail with matching accessory bracket
• Probe Cable Specification: PTFE insulated double-shielded dedicated eddy current probe cable; single-point shielding grounding only at converter LEMO port
• Power Wiring: Twisted shielded pair cable for -24 V DC power supply, separate wiring routing away from high-current AC power lines
• Cabinet Layout Clearance: Minimum 12 mm vertical and horizontal gap between adjacent CON041 units for heat dissipation

Operation & Maintenance Notes

1. Each CON041 unit is factory calibrated to match a single corresponding eddy current probe; cross matching different probe models causes irreversible linearity error
2. Complete accuracy calibration via certified air gap test fixture must be executed every 12 months
3. Probe cables must not run parallel within 10 cm of variable frequency drive power cables
4. LEMO connector locking structure visual inspection required every 12 months to prevent loose contact from long-term vibration
5. Ambient temperature over +95°C will activate thermal protection and cut off valid measurement output