Shinkawa VL-202A08L-1A42 Vibration Sensor Transducer Probe



Shinkawa VL-202A08L-1A42 Vibration Sensor Transducer Probe

The Shinkawa VL-202A08L-1A42 is an industrial-grade eddy-current (inductronic) displacement vibration sensor probe developed by Shinkawa Electric Co., Ltd. Designed for non-contact measurement of shaft vibration, axial position, and speed on critical rotating machinery, this probe converts minute distance changes into accurate electrical signals when coupled with a compatible signal conditioner or driver (such as the Shinkawa VK series).

Product Introduction / Overview

The VL-202A08L-1A42 probe operates on the non-contact eddy-current principle to continuously monitor shaft behavior in high-speed industrial turbomachinery. Capable of surviving harsh internal machine environments exposed to lubricating oil, steam, and high temperatures, it serves as a frontline transducer for machinery protection systems compliant with API 670 standards.

Primary Function: Non-contact shaft displacement, shaft vibration, and axial position measurement.

Target Equipment: Steam turbines, gas turbines, heavy industrial compressors, high-pressure pumps, blowers, and large electric motors.

Technical Parameter List

Product Features / Core Advantages

Non-Contact High-Precision Sensing: Measures sub-micron shaft movements without physical contact or mechanical wear.

API 670 Standard Alignment: Built to satisfy heavy industrial machinery monitoring criteria for API-compliant monitoring systems.

Ruggedized Construction: Features a durable stainless steel tip and threaded body engineered to withstand continuous exposure to hot synthetic lube oil and high-pressure steam environments.

High Frequency Response: Delivers rapid response capabilities from DC static position up to high dynamic vibration frequencies (>10 kHz).

Armored Cable Shielding: Flexible metallic armor option protects delicate coaxial signal leads from crushing and physical damage during cabinet pull-throughs.

Model Classification

Shinkawa VL series probe model numbers encode structural dimensions, thread sizes, tip diameters, and cable terminations:

VL-202A: Base family designation for Shinkawa eddy-current proximity probes.

08: Represents an 8 mm sensing tip diameter for standard linear distance sensitivity.

L / Thread Code: Denotes full-thread body design and metric thread dimensions (M10x1).

-1A42: Specifies particular unthreaded body length, overall case length, total system cable length, and protective armoring options.

Environmental Tolerance Conditions

Installation Method

Safety & Zeroing: Lock out the machine and verify that the target shaft is static before installation.

Mounting Bracket Setup: Thread the probe into a rigid internal bracket or external penetration sleeve. Do not over-torque.

Gap Adjustment: Position the probe tip relative to the target shaft to set the electrical center (typically set to -10.0 V DC gap voltage using a digital multimeter at the driver output).

Locknut Torque: Secure the probe locking nut to prevent loosening due to machine vibration.

Connector Protection: Secure the coaxial extension connection using insulating heat-shrink tubing to prevent ground loops and moisture ingress.

Operating Instructions

Target Surface Inspection: Ensure the shaft target area is clean, smooth, and free from surface scratches, magnetization, or runout defects.

Cable Bend Radius: Maintain a minimum cable bend radius of 30 mm for armored cable (15 mm for unarmored leads) during routing to prevent core damage.

Driver Pairing: Always operate the VL-202A08L-1A42 probe with its specified Shinkawa signal driver module and matched total system cable length (e.g., 5-meter or 9-meter matched systems).

Periodic Calibration: Perform mechanical gap checks and linear output voltage calibration during annual planned plant turnarounds