PR6426/010-110+C0N021/916-240 | -4 to -20V DC voltage | eddy current sensor produced

Product Overview
PR6426/010-110 is a high-performance eddy current sensor produced by the German company EPRO, specifically designed for vibration, displacement and expansion difference monitoring of industrial rotating machinery such as steam turbines, compressors and gearboxes. Its core function is to non-contact measure the displacement change of the metal object under test through the eddy current effect, and it is widely used in TSI (Steam Turbine Monitoring and Protection System), such as the MMS3000 and MMS6000 series.
This sensor needs to be used in conjunction with the CON021/916-240 preamplifier. The preamplifier is responsible for converting the high-frequency signal output by the sensor into a standard voltage signal (DC voltage superimposed with AC vibration signal) for analysis by the subsequent control system.
Hainan Jinlin Mechanical & Electrical, as a professional distributor of industrial control products, provides this product and technical support to ensure the security of the customer’s supply chain.

Technical specifications
Parameter value
Product Model :PR6426/010-110 (Sensor) + CON021/916-240 (Preamplifier)
Manufacturer :EPRO
Product type: Eddy current sensor + Signal conversion preamplifier
Measuring range: ±1mm (linear range 0.7-2.7mm)
Sensitivity :8V/mm (typical value)
Frequency response: DC to 10kHz (-3dB attenuation)
Output signal: -4 to -20V DC voltage (superimposed AC vibration signal)
Supply voltage: -24V DC ±10%
Operating temperature: Sensor: -35℃ to +180℃ (instantaneous maximum 300℃); Preamplifier: -20℃ to +70℃
Protection grade: Sensor: IP67 Preamplifier: IP20
Probe diameter: 8mm (Optimized for close-range measurement accuracy)
Cable configuration: Standard 10-meter integral armored cable (supports up to 300 meters, high-frequency signal attenuation with length)
Installation method: Fixed with M8×20 screws, in conjunction with anti-slip gaskets (DIN463-A2 standard)
Calibration: Before leaving the factory, linear calibration is carried out using 42CrMo4 material. On-site, only the air gap needs to be adjusted to the midpoint of the measurement range (-12V).
International standards: Comply with standards such as API 670, DIN45670 and ISO10817-1

Typical application scenarios
Steam turbine monitoring: Detect shaft vibration (0-10kHz) and axial displacement (accuracy ±1.5%FS), and prevent rotor friction and collision.
Compressor control: Real-time feedback on rotor position, optimized clearance management, and improved energy efficiency.
Gearbox diagnosis: Predict the risk of bearing bush failure through changes in oil film thickness (with a resolution of 0.01mm).
Explosion-proof environment: After installing the safety barrier, the explosion-proof grade can reach Eex ib IIC T6/T4, and it is suitable for hazardous areas such as petrochemicals.