I. Model Interpretation PR6423/10R-030-CN

PR6423: Φ8mm Eddy Current Sensor

10R: 10 meters of armored shielded cable

030: Standard sensitivity, standard linear calibration

CN: China-compatible version, with Chinese labels and domestic warranty compatibility

CON021: Special matching preamplifier, factory-matched for complete use together

II. Core Parameters of the Sensor

Probe Specifications: Diameter 8mm, M10×1 installation thread

Cable: 10m double-layer shielded armored, with anti-tensile, oil-resistant, and anti-electromagnetic interference properties

Linear Measurement Range: 0 - 1.5mm

Sensitivity: 12V/mm

Standard Installation Gap: 2.5mm

Matching Midpoint Voltage: Connect CON021 output -12V

Frequency Response: 0 - 12kHz

Coil Resistance: 4 - 6Ω

Insulation Resistance: > 100MΩ

Operating Temperature: Probe -35°C to +150°C

Protection Level: IP67

Compatible Target Materials: 42CrMo4 ferromagnetic alloy steel

III. Parameters of the CON021 Preamplifier

Power Supply: -24VDC (allowable range -18 to -30VDC)

Output Linear Range: -4V to -20V

Rated Power Consumption: ≤ 2W

Frequency Response: 0 - 10kHz

Built-in Protection: Reverse connection, short circuit, open circuit protection

Installation Method: Cabinet-mounted panel installation, protection level IP20

IV. Wiring and Connection

CON021 Terminal Definitions:

1 Terminal: -24V power negative

2 Terminal: 0V power ground

3 Terminal: Signal output (connected to TSI modules such as MMS6110/MMS6312)

4 Terminal: Signal common ground

Sensor and Preamplifier:

PR6423 comes with LEMO aviation connector, which can be directly inserted into the CON021 interface and tightened for locking.

Shielding Grounding Requirements:

Single-point grounding, only the front panel of the cabinet and preamplifier side are grounded, the shielding at the probe end is left floating, and grounding at both ends is prohibited.

V. On-site Installation and Commissioning

Probe should be vertically aligned with the measured shaft surface, avoiding the edge of the shaft

Initial Pre-set Installation Gap: 2.5mm

Power On Fine-tuning of the Probe Position to make the preamplifier output stable at -12V and then lock and fix

Cable should be kept away from power lines, frequency converters, and not laid parallel in the same slot as the power cable

VI. Voltage State Discrimination

Too Small Gap: Output close to -4V

Standard Working Point: 2.5mm ➜ -12V

Too Large Gap: Output close to -20V

No Voltage or Approaching 0V: Probe broken wire, LEMO connector loose, power polarity reversed

VII. Application Compatibility

Applicable Equipment: Steam turbines, compressors, fans, gas turbines

Measurement Functions: Shaft vibration, shaft displacement, eccentricity, phase monitoring

Compatible Systems: EPRO MMS6000, AMS6500 full series of TSI systems