38DL PLUS
Ultrasonic Thickness Gauge
The innovative 38DL PLUS instrument combines ease of use and accuracy with a durable design. Ideally suited for almost every ultrasonic thickness gaging application, this handheld gage is compatible with a full line of dual and single element transducers. The versatile 38DL PLUS thickness gage 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.
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The 38DL PLUS gage comes standard with many powerful measurement features and a range 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.
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Key Features
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Dual and single element transducer compatibility
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Wide thickness range: 0.08 mm (0.003 in.) to 635 mm (25 in.) depending on material and transducer selection
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Corrosion thickness gaging with dual element transducers
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THRU-COAT® and Echo-to-Echo measurements on painted and coated surfaces
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Internal Oxide/Scale software option
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Standard resolution of 0.01 mm or 0.001 in. for all transducers
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High Resolution software option of 0.001 mm or 0.0001 in. with single element transducers 2.25 MHz to 30 MHz
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Multilayer software option for measurements of up to four layers simultaneously
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High Penetration software option for attenuating materials such as fiberglass, rubber and thick casting
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Thickness, Velocity, and time-of-flight measurements
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Differential mode and Reduction Rate mode
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Time-based B-scan mode; 10,000 reviewable readings per scan
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Olympus High Dynamic Gain technology with digital filters
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V-Path Builder for custom V-path compensation
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Designed for EN1531
What Makes This Thickness Gauge 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.
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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.
Outdoor display setting, A-scan mode
Built for Tough Environments
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Compact, weighs only 0.814 kg (1.80 lb)
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Rugged, designed for IP67
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Explosive atmosphere: tested using MIL-STD-810F, Method 511.4, Procedure I
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Shock tested using MIL-STD-810F, Method 516.5, Procedure I, 6 cycles each axis, 15 g, 11 msec half sine
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Vibration tested using MIL-STD-810F, Method 514.5, Procedure I, Annex C, Figure 6, general exposure: 1 hour each axis
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Wide operating temperature range
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Protective rubber boot with gage stand
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Color transflective VGA display with indoor and outdoor color settings for superior clarity
Indoor display setting, B-scan mode
Designed for Easy Operation
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Simple keypad for right hand/left hand operation
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Easy operator interface with direct access to all functions
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Internal and external microSD™ memory card storage
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USB and RS-232 communication ports
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Alphanumeric data logger with 475,000 thickness readings
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or 20,000 waveforms
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VGA output to connect to computer or monitor
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Default/Custom dual element transducer setups
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Default/Custom single element transducer setups
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Password protected function enables locking of instrument features
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What Makes This Thickness Gage Different from Others?
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Outdoor display setting, A-scan mode
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Indoor display
The Olympus 38DL PLUS is the most user-friendly and intuitive digital thickness gauge on the market and has been for over a decade....
Thickness Measurements on Internally Corroded Metals
One of the major applications of the 38DL PLUS® thickness gage 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.
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Automatic Probe Recognition for standard D79X series dual element transducers
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Ten custom dual element transducer setups
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Optimized default gain during calibration for dual element transducer
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V-Path Builder for custom V-path compensation
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Calibration doubling warning when echo doubling may occur during calibration
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THRU-COAT® technology and echo-to-echo measurements on painted and coated surfaces
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High-temperature measurements; up to 500 °C (932 °F)
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Boiler tube and internal oxide measurements (optional) with M2017 or M2091 single element transducers
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EMAT transducer (E110-SB) for no-couplant measurements
of boiler tubes with external oxide/scale buildup
Olympus 38DL PLUS Thickness Gage Overview
Olympus representative discusses features and functions.
Specifications
MEASUREMENTS
Dual element transducer measurement mode - Time interval from a precision delay after the excitation pulse to the first echo
THRU-COAT® measurement - Measurement of true metal and coating thicknesses with a single back-wall echo (with D7906-SM and D7908 transducers)
Thru-Paint Echo-to-Echo - Time interval between two successive back-wall echoes to eliminate paint or coating thickness.
Single element transducer measurement modes -
Mode 1: Time interval between the excitation pulse and the first back-wall echo
Mode 2: Time interval between the delay line echo and the first back-wall echo (with delay or immersion transducers)
Mode 3: Time interval between successive back-wall echoes following the first interface echo after the excitation pulse (with delay line or immersion transducers)
Oxide: optional
Multilayer mode: optional
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Thickness range - 0.080 mm to 635.00 mm (0.003 in. to 25.000 in.) depending on material, transducer surface conditions, temperature, and selected configuration.
Material velocity range - 0.508 mm/µs to 13.998 mm/µs (0.020 in./µs to 0.551 in./µs)
Resolution (selectable) -
Low: 0.1 mm (0.01 in.)
Standard: 0.01 mm (0.001 in.)
High Resolution: optional 0.001 mm (0.0001")
Transducer frequency range -
Standard: 2.0 MHz to 30 MHz (-3 dB)
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GENERAL
Operating temperature range - -10 °C to 50 °C (14 °F to 122 °F)
Keypad - Sealed, color-coded keypad with tactile and audible feedback
Case - Impact-resistant and water-resistant, gasketed case with sealed connectors. Designed for IP67.
Dimensions (W x H x D) - Overall: 125 mm x 211 mm x 46 mm (4.92 in. x 8.31 in. x 1.82 in.)
Weight - 0.814 kg (1.80 lb)
Power supply - AC/DC adaptor, 24 V; lithium-ion battery 23.760 Wh; or 4 AA auxiliary batteries
Battery life, lithium-ion - Operating time: minimum 12.6 h, 14 h typical, 14.7 h maximum Fast charge: 2 h to 3 h
Standards - Designed for EN15317
Explosive atmosphere - Tested using MIL-STD-810G, Method 511.5, Procedure I
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DISPLAY
Color transflective VGA display - Liquid crystal display, display area 56.16 mm x 74.88 mm (2.2 in. x 2.95 in.)
Rectification - Full wave, RF, half-wave positive, or half-wave negative
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INPUTS/OUTPUTS
USB - 1.0 client
RS-232 - Yes
Memory card - Maximum capacity: 2 GB External MicroSD memory card
Video output - VGA output standard
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INTERNAL DATA LOGGER
Data logger - The 38DL PLUS identifies, stores, recalls, clears, and transmits thickness readings, waveform images, and gage configuration information through the standard RS-232 serial port or USB port.
Capacity - 475,000 thickness measurements or 20,000 waveforms with thickness measurements
File names, IDs, and comments - 32-character file names and 20-character alphanumeric location codes with four comments per location
File structures - Nine standard or custom application-specific file structures
Reports - On-gage reporting of summary with statistics, Min./Max. with locations, Min. review, file comparison, and alarm report