OLYMPUS 72DL PLUS Ultrasonic Thickness Gauge

Description

OLYMPUS 72DL PLUS Ultrasonic Thickness Gauge – High-Speed High-Frequency Precision NDT Thickness Measurement System

The OLYMPUS 72DL PLUS Ultrasonic Thickness Gauge is a high-performance ultrasonic NDT instrument designed for fast, precise measurement of material, coating, paint and multilayer thicknesses. Originally introduced by Olympus and now supported under the Evident product portfolio, the 72DL PLUS combines high-speed measurement, advanced ultrasonic processing and a large touchscreen interface in a portable industrial instrument.

Available in Standard Frequency and High-Frequency configurations, the gauge can work with single-element transducers from 0.2–30 MHz in standard configurations and up to 125 MHz with the high-frequency model. The high-frequency version is particularly suited to ultra-thin materials and coatings.

With optional Multilayer Measurement software, the instrument can simultaneously display the thickness of up to six independent layers, making it useful for advanced coating, paint, plastic and composite-material inspection.

Main Benefits

High-speed ultrasonic thickness measurement
High-frequency capability for ultra-thin materials
Non-destructive testing technology
Measures metals, plastics, coatings and composites
Multilayer measurement of up to six layers
Up to 2 kHz measurement rate
Large 7-inch color touchscreen
A-scan, B-scan and A/B-scan displays
Advanced signal processing and digital filtering
Internal inspection data storage
Wi-Fi, Bluetooth and USB connectivity
Rugged IP65 industrial design
Up to 8 hours of battery operation
Suitable for production-floor and field inspection

Key Features

High-Speed Thickness Measurement
The 72DL PLUS is designed for rapid inspection, with measurement speeds of up to 2 kHz in applicable configurations. This makes it particularly useful for production environments where large numbers of measurements must be collected quickly.

High-Frequency Ultrasonic Measurement
The High-Frequency model supports transducers from approximately 20 to 125 MHz, allowing inspection of extremely thin materials that may be difficult to measure using conventional lower-frequency thickness gauges.

Typical applications include:
Thin metal
Plastic films
Thin tubing
Paint
Protective coatings
Composite materials
Medical tubing
Thin multilayer structures

Multilayer Measurement
With the Multilayer Measurement feature, the 72DL PLUS can simultaneously display measurements for up to six separate layers.

Each layer can have its own:
Material
Velocity
Target thickness
Alarm threshold
This makes the instrument particularly useful for multilayer paint, coating and plastic inspection.

Large 7-Inch Touchscreen
The instrument features a 177.8 mm (7-inch) WVGA full-color PCAP touchscreen with an 800 × 480 resolution and 60 Hz refresh rate.
The large display provides clear access to measurement information and inspection waveforms even in demanding industrial environments.

Multiple Measurement Displays
The 72DL PLUS provides several display layouts, including:
A-Scan
B-Scan
A/B-Scan
Trend
Zoom
Template
A-Scan/Template
These layouts help inspectors visualize thickness changes and analyze ultrasonic waveforms during inspection.

Advanced Digital Filtering
Digital filtering improves the signal-to-noise ratio when inspecting challenging or noisy materials.

This is particularly useful when measuring materials such as:
Fiberglass
Composite structures
Rough surfaces
Industrial plastics

Key Specifications

Specification
Brand Olympus / Evident
Model 72DL PLUS
Product Type Ultrasonic Thickness Gauge
Technology Ultrasonic NDT
Display 7-inch WVGA color touchscreen
Display Resolution 800 × 480
Display Refresh Rate 60 Hz
Standard Frequency 0.2–30 MHz
High Frequency 20–125 MHz
Measurement Rate Up to 2 kHz
Multilayer Measurement Up to 6 layers
Internal Storage 2 GB
Thickness Readings Approximately 400,000
Waveform Storage Approximately 20,000 waveforms
Gain Automatic or manual
Calibration Single- or two-point automatic calibration
Connectivity Wi-Fi, Bluetooth, USB
Protection Rating Designed and tested for IP65
Operating Temperature -10°C to 50°C
Weight Approximately 2.08 kg / 4.6 lb
Battery Life Up to 8 hours
Power 24 V AC/DC adapter or 73 Wh Li-ion battery

Thickness Measurement Capability

The actual measurable thickness depends on the material, transducer frequency and probe configuration.
Published specifications include approximately:

Steel
0.20 mm to 635 mm depending on configuration and transducer.

Plastic
Approximately 0.0127 mm to 25.4 mm depending on configuration and transducer.
The High-Frequency configuration is designed specifically for applications involving ultra-thin materials.

Resolution
Depending on the selected measurement mode and configuration, the 72DL PLUS offers extremely fine resolution.

Standard Frequency
LOW: 0.1 mm
STD: 0.01 mm
HI: 0.001 mm
High Frequency
LOW: 25 µm
STD: 2.5 µm
HI: 0.25 µm

Applications

The OLYMPUS 72DL PLUS is suitable for:
Ultrasonic thickness measurement
Paint thickness measurement
Coating thickness inspection
Multilayer coating measurement
Metal thickness inspection
Plastic thickness measurement
Composite inspection
Tubing inspection
Manufacturing quality control
Aerospace inspection
Automotive inspection
Turbine blade inspection
Aircraft window inspection
Medical tubing inspection
Industrial production inspection

Typical Inspection Applications
Aerospace
Turbine blade manufacturing
Turbine blade inspection
Aircraft window inspection
Composite aircraft coatings
Radome coatings
Aluminum composite panels
Automotive
Automotive paint thickness
Multilayer paint measurement
Coating quality control
Manufacturing
Plastic tubing
Metal tubing
Medical tubing
Catheter wall thickness
Waterproof coatings
Antireflective coatings
Dry-film thickness
Plastic containers and tanks

What is the OLYMPUS 72DL PLUS used for?
It is used for precision ultrasonic thickness measurement of metals, plastics, coatings, composites and multilayer materials in industrial NDT applications.

Can the 72DL PLUS measure very thin materials?
Yes. The High-Frequency model supports transducers up to 125 MHz, allowing measurement of ultra-thin materials and coatings.

Can it measure multiple layers?
Yes. With Multilayer Measurement capability, the gauge can simultaneously display the thickness of up to six layers.

Does the 72DL PLUS have A-scan and B-scan?
Yes. It supports A-Scan, B-Scan, A/B-Scan, Trend, Zoom and other measurement layouts.

How fast can it measure?
The gauge can achieve measurement rates of up to 2 kHz, depending on configuration and number of layers being measured.

Is the 72DL PLUS suitable for field use?
Yes. The instrument weighs approximately 2.08 kg, has an IP65-rated design, supports battery operation for up to eight hours and is designed for indoor and outdoor industrial use.

Does it store inspection data?
Yes. The instrument has approximately 2 GB of internal storage, supporting roughly 400,000 thickness readings and 20,000 waveforms.