EPRO CON021

Technical & Performance Specifications

• Supported Compatible Sensors: PR6422, PR6423, PR6424, PR6425, PR6426, PR6453 series eddy current probes
• Frequency Response Bandwidth (-3 dB): 0 Hz ~ 20,000 Hz
• Signal Rise Time: <15 µs high-speed transient response
• Power Supply Input Range: -23 V DC ~ -32 V DC negative supply
• Standard Analog Output Voltage Range: -4 V DC ~ -20 V DC linear output
• Mechanical Vibration Resistance: 5 g continuous vibration at 60 Hz operating frequency
• Operating Ambient Temperature Range: -30°C ~ +100°C
• Protection Class: IP20 cabinet mounting rating
• Unit Weight: 120 g
• Mounting Fasteners: 4×M5×20 steel mounting screws included with factory packaging
• Wiring Terminals: Power/output screw terminals support maximum 1.5 mm² copper wire cross-section
• Probe Interface: Self-locking LEMO circular plug connector for eddy current probe cable
• Certifications: CE, ATEX IEC-Ex hazardous area approval, CSA safety certification

Function Features

1. Linearization correction circuit compensates eddy current probe electromagnetic non-linearity across full measurement air gap range
2. Built-in short-circuit and open-probe fault detection with output signal clamping for system alarm triggering
3. Wide bandwidth simultaneously captures slow rotor thermal drift displacement and high-frequency bearing defect vibration signatures
4. Galvanic isolation between probe input and analog output eliminates ground loop interference in multi-probe monitoring racks
5. Compact lightweight housing supports dense DIN rail or panel mounting in machinery control cabinets
6. Negative supply voltage architecture optimized for industrial vibration monitoring rack standard power distribution systems

Working Principle

Material & Structural Composition

• Housing Alloy: LMgSi 0.5 F22 lightweight heat-conductive die-cast aluminum alloy
• Internal PCB: Multi-layer FR4 circuit board with temperature-stable precision resistors and oscillator components
• Connector Assembly: Nickel-plated LEMO self-locking circular probe plug; tin-plated copper screw terminal blocks for power/output wiring
• Thermal Interface: Integrated internal aluminum heat sink bonded to main PCB for high-temperature ambient heat dissipation

Advantage Highlights

1. ATEX hazardous zone certification permits installation inside refinery, power plant and gas turbine classified control cabinets
2. Ultra-wide -30°C to +100°C operating temperature range adapts to unconditioned machinery local control panels
3. Low weight and compact footprint enable dense multi-channel mounting for turbine shaft multi-point monitoring
4. Factory pre-calibrated linearity correction eliminates on-site signal trimming requirement
5. High vibration resistance maintains stable measurement performance on skid-mounted rotating equipment control racks

Applicable Industries

Installation Requirements

• Mounting options: Direct panel mounting via supplied M5 screws or 35 mm DIN rail adapter bracket (accessory)
• Probe cable routing: PTFE insulated shielded probe cable; single-point shielding grounding at converter LEMO connector
• Power wiring: Twisted pair shielded cable for -24 V DC negative supply; separate wire run from signal output wiring
• Cabinet restriction: Maintain minimum 10 mm air gap between adjacent CON021 units for cross-unit thermal isolation

Operation & Maintenance Notes

1. Each converter must be factory calibrated paired with matching eddy current probe; cross-unit probe pairing invalidates measurement linearity
2. Annual calibration required via certified displacement air gap test fixture to maintain ISO process monitoring accuracy standards
3. Do not route probe cables parallel to high-current variable frequency drive power wiring
4. Visually inspect LEMO connector locking mechanism every 12 months for mechanical wear from vibration
5. Ambient cabinet temperature exceeding +100°C triggers permanent internal thermal protection shutdown