I. Model Interpretation PR6423/010-130

PR6423: Φ8mm Eddy Current Sensor

010: Cable length 10m, armored type

130: Special calibration code, standard sensitivity version

CON021: EPRO companion dedicated preamplifier, perfectly matched for use with this probe set

II. Core Parameters of the Sensor

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

Cable: 10 meters, double-layer shielded armored cable, anti-interference and anti-tension

Standard Linear Measurement Range: 0 - 1.5mm

Rated Sensitivity: 12V/mm

Standard Installation Gap: 2.5mm

Matching CON021 Mid-point Voltage: -12V

Frequency Response: 0 - 12kHz

DC Resistance of the Coil: 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 for Operation: -24VDC, allowable range -18 to -30VDC

Output Linear Voltage Range: -4V to -20V

Power Consumption: ≤ 2W

Frequency Response: 0 - 10kHz

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

Installation Method: Fixed on the panel inside the cabinet, protection level IP20

IV. Wiring and Connection

CON021 Terminal Definitions

Terminal 1: -24V

Terminal 2: 0V Ground

Terminal 3: Signal Output (connected to MMS6110/MMS6312 etc. TSI modules)

Terminal 4: Signal Common Ground

Sensor and Preamplifier

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

Shielding Grounding Specification

Single-point Grounding: Ground only at the preamplifier side of the cabinet, the probe end shield is floating, and grounding at both ends is prohibited.

V. Installation and Commissioning Standards

The probe should be vertically aligned with the measured axis surface, avoiding the axis edge.

Pre-set Installation Gap: 2.5mm

Power On Adjustment of the Probe Position, make CON021 output stable at -12V and then lock for fixation

Sensor Cable Should Be Away from Power Lines, Frequency Converters, and Avoid Parallel Wiring to Avoid Interference

VI. Voltage Status Judgment

Gap is too small: Output is close to -4V

Standard Working Point: 2.5mm ➜ -12V

Gap is too large: Output is close to -20V

No Voltage: Probe broken wire, LEMO connector loose, power polarity reversed

VII. Application Scenarios

Used for steam turbines, compressors, fans, gas turbines

Measurement: Axial vibration, axial displacement, eccentricity, phase difference

Compatible Systems: MMS6000, AMS6500 full series TSI systems