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38DL PLUS  
38DL PLUS

38DL PLUS Ultrasonic Thickness Gage:
Advanced Features, Simple Operation, Rugged, Reliable

The 38DL PLUS is an innovative instrument that signals a new era in ultrasonic thickness gaging. Ideally suited for almost every ultrasonic thickness application, this handheld thickness gage is fully compatible with a full line of dual and single element transducers. The versatile 38DL PLUS can be used in applications ranging from wall thinning measurements of internally corroded pipes with dual element probes to very precise thickness measurements of thin or multilayer materials with single element transducers.

The 38DL PLUS comes standard with many powerful but easy-to-use measurement features and a host of application-specific software options. Its sealed case is designed to meet IP67 requirements to withstand the rigors of very wet or dusty environments. The color transflective VGA display provides superior readability from bright sunlight to complete darkness. It features a simple, ergonomic keypad that can be operated with the left or right hand for easy access to all functions.

Key Features

• Dual and single element transducer compatibility
• Wide thickness range: 0.08 mm (0.003 in.) to 635 mm (25 in.) depending on material and transducer selection
• Corrosion thickness gaging with dual element transducers
• THRU-COAT® and Echo-to-Echo measurements on painted and coated surfaces
• Internal Oxide/Scale software option
• Standard resolution of 0.01 mm or 0.001 in. for all transducers
• High Resolution software option of 0.001 mm or 0.0001 in. with single element transducers 2.25 MHz to 30 MHz
• Multilayer software option for measurements of up to four layers simultaneously
• High Penetration software option for attenuating materials such as fiberglass, rubber and thick casting
• Thickness, Velocity, and time-of-flight measurements
• Differential mode and Reduction Rate mode
• Time-based B-scan mode; 10,000 reviewable readings per scan
• Olympus High Dynamic Gain technology with digital filters
• V-Path Builder for custom V-path compensation
• Designed for EN15317

What Makes This Thickness Gage Different From Others?

The 38DL PLUS is designed to meet the challenges of demanding applications and built to withstand tough conditions in the field and on the production floor. Whether you work in very wet or dusty conditions, cold or hot climates, or bright or dark areas, the 38DL PLUS can handle any inspection job. Need an instrument tough enough to tolerate shocks, drops, and rough handling? The 38DL PLUS with its protective rubber boot and designed for IP67 rating is your answer.

Built for Tough Environments

• Compact, weighs only 0.814 kg (1.80 lb)
• Rugged, designed for IP67
• Explosive Atmosphere: Safe operation as defined by Class I, Division 2, Group D, as found in the National Fire Protection Association Code (NFPA 70), Article 500, and tested using MIL-STD-810F, Method 511.4, Procedure I.
• Shock tested using MIL-STD-810F, Method 516.5, Procedure I, 6 cycles each axis, 15 g, 11 msec Half sine.
• Vibration tested using MIL-STD-810F, Method 514.5, Procedure I, Annex C, Figure 6, general exposure: 1 hour each axis.
• Wide operating temperature range
• Protective rubber boot with gage stand
• Color transflective VGA display with indoor and outdoor color settings for superior clarity

Designed for Easy Operation

Outdoor display setting, A-scan mode

Indoor display setting, B-scan mode

• Simple keypad for right hand/left hand operation
• Easy operator interface with direct access to all functions
• Internal and External MicroSD memory card storage
• USB and RS-232 communication ports
• Alphanumeric data logger with 475,000 thickness readings or 20,000 waveforms
• VGA output to connect to computer or monitor
• Default/Custom dual element transducer setups
• Default/Custom single element transducer setups
• Password protected function allows locking of instrument features

?Thickness Measurements on Internally Corroded Metals

One of the major applications of the 38DL PLUS is measuring the remaining thickness of pipes, tubes, tanks, pressure vessels, hulls, and other structures affected by corrosion or erosion. Dual element transducers are most commonly used for these applications.

• Automatic Probe Recognition for standard D79X series dual element transducers
• Ten custom dual element transducer setups
• Optimized default gain during calibration for dual element transducer
• V-Path Builder for custom V-path compensation
• Calibration Doubling when echo doubling may occur during calibration
• THRU-COAT® and Echo-to-Echo measurements on painted and coated surfaces
• High temperature measurements; up to 500 °C (932 °F)
• Boiler tube and Internal Oxide measurements (optional) with M2017 or M2091 single element transducers
• EMAT transducer (E110-SB) for no-couplant measurements of boiler tubes with external oxide/scale buildup

Thru-Coat® Technology

A single back-wall echo is used to measure true metal thickness. You can display the metal and coating thicknesses, each adjusted for their correct material sound velocities. There is no need to remove paint and coatings from surfaces. THRU-COAT measurements use the D7906-SM, D7906-RM, and D7908 dual element transducers.

Temperature Compensation

Variations in material temperature affect sound velocity and accuracy of thickness measurements. The temperature compensation feature allows you to manually enter the calibration block's temperature and the current (high) temperature at the measurement points. The 38DL PLUS automatically displays the temperature-corrected thickness.

Optional Oxide/Scale Measurement

38DL PLUS uses advanced algorithms to measure the thickness of oxide/scale buildups inside boiler tubes. The gage simultaneously displays the metal thickness of the boiler tube and the thickness of the oxide layer. Knowing the thickness of the oxide/scale helps predict tube life. We recommend using M2017 or M2091 transducers in this application.

V-Path Builder

This new and patented feature allows you to build a custom V-Path compensation curve for almost any dual element transducer. These curves can be saved and recalled along with custom setups for most dual element transducers.

You simply calibrate and enter the known thickness with a minimum of 3 and up to 10 calibration points, and the instrument will create the V-path.

Automatic Probe Recognition

All standard dual element transducers feature Automatic Probe Recognition, which automatically recalls a default V-path correction for each specific transducer.

?Thickness Measurements on Plastics, Metals, Composites, Glass, Rubber, Ceramics

When using single element transducers, you can make accurate thickness measurements on metals, plastics, composites, glass, ceramics, and other materials. These transducers are available in a wide range of frequencies, diameters, and connector styles. The High Resolution software option allows you to make very precise measurements at a resolution of 0.0001 in. or 0.001 mm.
• Standard resolution of 0.01 mm (0.001 in.) for all transducers
• High Resolution software option can display measurements up to 0.001 mm (0.0001 in.) for single element transducers from 2.25 MHz to 30 MHz
• High Penetration software option for measurements on attenuating materials such as fiberglass, rubber, and thick castings
• Multilayer software option for individual thickness measurements of up to four layers simultaneously
• Thickness, Velocity, or time-of-flight measurements
• Application Auto-Recall with default and custom setups to simplify thickness measurements

High Penetration Software Option

This option allows you to use low frequency single element transducers (as low as 0.5 MHz) to measure thick or sound attenuating materials such as rubber, fiberglass, castings, and composites.

Multilayer Software Option

This software option calculates and simultaneously displays thickness measurements of up to four individual layers.

It also displays total thickness of selected layers. Typical applications include thickness of barrier layers in plastic fuel tanks, bottle preforms, and soft contact lenses.

Data Logger and PC Interface

The 38DL PLUS has a full-featured internal bidirectional alphanumeric data logger that is designed to easily collect and transfer thickness readings and waveform data.
• Internal memory of 475,000 thickness readings or 20,000 waveforms with thickness readings
• 32 Character File name
• 20 Character ID# (TML#)
• 9 file formats: Incremental, Sequential, Sequential with custom point, 2-D Grid, 2-D Grid with custom point, 3-D Grid, 3-D custom, Boiler, and Manual
• The ability to store up to 4 comments (notes) per ID# (TML)
• Stores comments (notes) at an ID# or to a Range of ID#'s
• Internal and External MicroSD memory cards
• File copy with the ability to copy files between Internal/External MicroSD memory cards
• Standard USB and RS-232 communication
• Two-way transfer of both single and dual element transducer setups
• Onboard statistical report
• Onboard DB Grid View with three programmable colors
• GageView™ interface program can communicate with the 38DL PLUS using the USB, RS-232 ports, and can read and write to a MicroSD memory card.
• Direct export of internal files to MicroSD memory card in Excel compatible CSV (comma-separated values) format

Onboard DB Grid View with three programmable colors

GageView™

• The GageView interface program, a Windows-based application, collects, creates, prints, and manages data from the 38DL PLUS.
• Creates datasets and surveys
• Stored data editing
• View dataset and survey files; including thickness readings, gage setup values, and transducer setup values
• Download and upload thickness surveys to and from the gages
• Export surveys to spreadsheets and other programs
• Collecting snapshot screens
• Printing reports such as Thickness, Setup Table, Statistics, and Color Grid
• Upgrading operating software
• Download and upload single and dual element transducer setup files
• B-scan review

Standard Package

38DL PLUS digital ultrasonic thickness gage, AC or battery, 50 Hz to 60 Hz
Kits available with standard dual element transducers
• Charger/AC adapter (100 VAC, 115?VAC, 230 VAC)
• Internal data logger
• GageView interface program
• Test block and couplant
• USB cable
• Rubber protective boot with gage stand and neck strap
• User's manual
• Two-year limited warranty
Measurement features: THRU-COAT, Thru-Paint Echo-to-Echo, EMAT compatibility, Min./Max. mode, two alarm modes, differential mode, B-scan, Application Auto-Recall, temperature compensation, Average/Min. mode

 

 

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