Product Overview
The EPRO CON011 (part number 9200‑00001) is a rugged single‑channel eddy‑current signal converter (pre‑amplifier) built for EPRO PR642X series proximity probes. It converts raw impedance signals from non‑contact eddy‑current sensors into usable analog voltage outputs for shaft radial vibration, axial thrust displacement, and shaft speed key‑phasor measurement. Housed in sealed IP67 metal enclosure with LEMO sensor connector, this field‑mount unit is a core component within MMS machinery protection systems, widely stocked as spare part for turbine, compressor and large rotating‑asset condition‑monitoring loops. Factory‑calibrated probe‑converter matched pairs deliver optimal measurement accuracy; mixing unmatched sensor and converter units will degrade reading precision.
Core Technical Specifications
- Model: CON011
- Part Number: 9200‑00001
- Device Type: Eddy‑current proximity probe signal converter / pre‑amplifier
- Supported Sensors: PR6422, PR6423, PR6424, PR6425, PR6426 series eddy‑current probes
- Sensor Interface: LEMO circular connector
- Power Supply: −23 V DC ~ −32 V DC input
- Output Signal: Superimposed AC‑DC analog voltage; linear output range −4 V ~ −20 V
- Built‑in Protection: Input short‑circuit protection, reverse‑polarity supply protection
- Enclosure Rating: IP67 sealed metal housing for field‑side installation near machinery
- Operating Temperature: −20 °C ~ +60 °C
- Humidity: 5 %‑95 % RH, non‑condensing
- Mounting: Surface‑mount via housing mounting holes
- Approximate Weight: 0.60 kg
- Compatibility: EPRO MMS machine monitoring racks; analog output feeds to DCS, PLC or vibration monitoring instruments
Typical Industrial Applications
‑ Thermal / combined‑cycle power plants: Turbine shaft vibration and thrust‑position monitoring ‑ Petrochemical plants: Centrifugal compressor radial vibration, axial displacement surveillance ‑ Hydro‑electric facilities: Generator shaft non‑contact displacement measurement ‑ Cogeneration stations: Rotating machinery predictive‑maintenance monitoring loops ‑ Heavy‑industry process sites: Spare replacement for existing EPRO proximity measuring chains
Installation & Maintenance Notes
- The CON011 must be used with its factory‑matched eddy‑current probe; mismatched probe‑converter combinations will produce incorrect gap‑voltage readings.
- Observe correct wiring for negative‑polarity DC supply. Reversed supply will trigger abnormal output behavior.
- Sensor cable shield must be isolated from converter housing, LEMO connector shell and metal conduit to avoid ground‑loop interference, which causes noisy vibration signals.
- Mount unit away from high‑temperature radiation sources; do not exceed ambient temperature rating. IP67 rating permits field installation, yet avoid direct long‑term water jet impact.
- After replacement, perform mechanical gap adjustment between probe tip and shaft target surface, validate full linear output range before returning monitoring chain online.
- No internal field‑repairs are supported; defective units require full replacement. Store spare converters in dry, temperature‑controlled storage environment.
Common Troubleshooting Tips
‑ No output response when moving probe toward metal target: Verify −24 V class power supply; inspect LEMO connector pin integrity, check for open sensor cable. ‑ Flat / stuck output voltage: Check for short‑circuit on probe wiring; confirm that probe‑converter serial‑number matching is respected. ‑ Excess noisy vibration readings: Inspect shield grounding practice; eliminate ground‑loop paths; relocate converter and cables away from high‑power motor / variable‑frequency drive wiring. ‑ Output stays fixed near ~0.3 V: This typical state indicates open or shorted probe input circuit; troubleshoot sensor cable and probe assembly first before replacing CON011 hardware.
