Epro CON021/916-240 & PR6426/010-140 Eddy Current Sensor System

Configured for high-frequency vibration signal conditioning in turbomachinery monitoring systems, the Epro CON021/916-240 (CON021/916-240) converter paired with the PR6426/010-140 (PR6426/010-140) transducer provides direct physical/electrical execution.

Hardware Specifications

Gap Voltage Validation (-10 VDC targets)

The system utilizes an oscillator circuit to drive the transducer probe. To ensure accurate linearization over the 24.0 mm extended measuring range, the system necessitates precise gap voltage validation. The converter centers its output characteristic around a nominal target of -10 VDC, which represents the mid-point of the physical measurement gap. Maintenance of this -10 VDC baseline is mandatory during static commissioning; significant deviations indicate mechanical misalignment, transducer saturation, or degradation of the conductive target surface.

Frequently Asked Questions

Q: Can the CON021/916-240 converter be used with shorter range sensors?

A: No. The converter is calibrated specifically for the 24.0 mm range of the PR6426 series. Using a different transducer will result in significant linearity errors exceeding the specified 3.5% threshold.

Q: Is the system capable of operating in pressurized environments?

A: The PR6426 sensor head is rated for pressure resistance up to 6,500 hPa (94 psi). Ensure the installation threads are sealed appropriately for the application pressure environment.

Field Installation Guidelines

1. Mount the converter housing using four M5x20 screws onto a rigid, grounded surface to ensure structural integrity.
2. Install the PR6426 probe into the mounting bracket, ensuring at least 200 mm shaft diameter clearance and adequate spacing from adjacent metallic structures to prevent cross-talk.
3. Terminate the supply and output wiring using high-quality wire-end sleeves on the screw terminals, ensuring the cable conductor size does not exceed 1.5 mm².
4. Verify the power supply polarity before applying voltage, as the unit requires -21 VDC to -32 VDC negative logic input.
5. Ground the signal cable shield at the monitoring system (DCS/TSI) rack only to prevent ground-loop injection of 50/60 Hz electromagnetic noise.