PM4 Gen3 Precision Thin-Wall Thickness Gauge
YUSHI PM4 Gen3 ultrasonic thickness gauge features 0.001mm resolution, 0.13mm ultra-thin measurement, IP67 rugged design, ideal for metal sheets, pipes, aerospace & industrial NDT inspection.
YUSHI PM4 Gen3 Precision Ultrasonic Thickness Gauge | High-Precision NDT Thickness Tester
——Make Thickness Measurement Simpler
The YUSHI PM4 Gen3 is a high-precision ultrasonic thickness gauge for industrial NDT thickness measurement, delivering lab-grade accuracy, field-proven durability, and zero-learning-curve operation. It provides consistent, repeatable readings on metals, plastics, ceramics, and composites.
Ideal for corrosion monitoring, precision manufacturing, aerospace, rail transit, chemical processing, and metal fabrication, supports through-coat base material measurement, ultra-thin part testing, and inspection of pipes, curved surfaces, spheres, and tight-tolerance titanium components.
Design Patent: ZL 20203 0600327.9
Utility Model Patent: ZL 202021834019.3
Key Features & Benefits
Precision Measurement for Ultra-Thin Parts
✅ 1μm (0.001mm) resolution: Detects 0.001mm differences. Ideal for aerospace, medical, and precision manufacturing.
✅ 0.13mm ultra-thin measurement: Measures steel down to 0.13mm. Tests thin-wall titanium, foil, and delicate parts other ultrasonic thickness gauges cannot read.
✅ MEYER™ multi-echo verification: Displays verified values, eliminating false readings for critical inspections.
✅ 200MHz high-speed sampling: Captures distortion-free A-scan waveforms on ultra-thin materials.
Multi-Surface NDT with Through-Coating Penetration
✅ Through-coating penetration (up to 1mm): Measures base metal through paint, coating, or plating.
✅ Multi-geometry measurement: Reliably measures flat, curves, spheres, and irregular workpieces.
✅ 52-material sound velocity library: Pre-loaded with metals, plastics, ceramics, and composites.
Intuitive Operation for All Skill Levels
✅ Auto measurement matching: AGC and auto mode require no manual setup. Read accurately immediately.
✅ Guided calibration with waveform: Step-by-step calibration with live A-scan for visual coupling confirmation.
✅ One-point zero calibration: Quick daily setup cuts time for routine batch inspections.
✅ B-scan cross-sectional imaging: Creates thickness profiles, auto-captures minimums for corrosion mapping.
✅ Auxiliary functions: Upper/lower alarms, min/max value, difference/reduction rate.
Rugged Design for Harsh Environments
✅ IP67 dustproof & waterproof: Resists rain, dust, mud, and 1m immersion, ideal for refineries, pipelines, and shipyard.
✅ 22h battery life (2×AA): All-day operation on standard alkaline / lithium batteries. No charging in remote sites.
✅ Drop-proof & hands-free: Patented shock-absorbing sheath (ZL 20203 0600327.9). Stand and neck strap enable one-handed use.
Data Logging & Expandable Features
✅ 100,800-reading storage + DataView: 400 grid files, 400 B-scans. PC software for data analysis and reporting.
✅ Flexible connectivity & A-scan upgrade: Mini-USB standard; optional Bluetooth/RS232. Upgradeable A-scan display.
Technical Specifications
| Category | Parameter | Specification |
|---|---|---|
| Measurement Performance | Standard Probe | 15MHz single-element delay line probe |
| Measuring Range (Steel) | 0.13mm – 28mm | |
| Sound Velocity Range | 310 – 18699 m/s; reverse calibration supported | |
| Resolution (selectable) | • 0.1mm / 0.01in • 0.01mm / 0.001in • 0.001mm / 0.0001in / 1μm / 0.1mil | |
| Calibration Modes | One-point velocity calibration, manual setting, 52-material table | |
| Core Functions | Upper/lower limit alarm, min/max tracking, difference/reduction, B-scan | |
| Coating Penetration | Up to 1mm | |
| Display & Operation | Screen | 2.4-inch IPS color LCD (320×240) |
| View Modes | • Standard: Digits, B-scan • Optional: A-scan, A-scan/grid | |
| Update Rate | Selectable 4Hz / 8Hz / 16Hz | |
| Units | mm, inch, μm, mils | |
| Languages | Chinese, English | |
| Data & Connectivity | On-Board Storage | 400 grid files (252 cells each); 100,800 readings + 400 B-scans |
| Included Software | DataView for Windows (analysis, export, reporting) | |
| Probe Connector | Lemo 00 | |
| Interfaces | • Standard: Mini-USB • Optional: RS232 / Bluetooth | |
| Power & Durability | Power Supply | 2× AA batteries (alkaline or lithium) |
| Battery Life | ≥ 22 hours continuous | |
| Auto Power Off | Selectable 5/10/20 minutes idle timeout, or manual | |
| Ingress Protection | IP67 (1m immersion for 30 min) | |
| Operating Temp | -10°C to 50°C | |
| Physical | Dimensions (H×W×D) | 153mm × 76mm × 37mm |
| Weight | 280g (incl. batteries) |
The YUSHI PM4 Gen3 precision ultrasonic thickness gauge combines lab-grade accuracy with field-proven durability, ideal for quality control, equipment maintenance, and safety inspection across all industrial sectors.
Contact us today for a free quote or technical consultation.
Industry Applications & Use Cases
Precision thickness measurement of metal sheets
Precision thickness measurement of metal pipes
Precision thickness measurement of ultra-thin spherical titanium parts
Corrosion monitoring and wall thinning detection for pipelines & pressure vessels
Quality control inspection in manufacturing, aerospace, railway & chemical industries
 |  |
| Measure plastic vessels wall thickness | Measure copper tube wall thickness |
 |  |
| Measure steel tube wall thickness | Measure plastic tube wall thickness |
Standard Packaging & What's in the Box
| Name | Quantity | Remarks |
|---|---|---|
| PM4 Gen3 Ultrasonic Thickness Gauge | 1 | |
| D15A Single Element Delay Line Probe | 1 | With test report |
| Probe Cable | 1 | LEMO00 - Microdot |
| Rubber Protective Sheath with Holder | 1 | |
| Two AA Alkaline Batteries | 1 | Not included in air shipment |
| Couplant Bottle | 1 | |
| USB Communication Cable | 1 | |
| USB Flash Drive | 1 | |
| Carrying Case | 1 | |
| Certificate of Qualification | 1 | |
| Factory Calibration Certificate | 1 | |
| User Manual | 1 | |
| Warranty Card | 1 | |
| Packing List | 1 |
Optional Accessories & Compatible Parts
A-scan Waveform Function
Bluetooth Communication Module
Four-point Neck Strap
