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45MG Thickness Gauge

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45MG Ultrasonic Thickness Gauge:
Simple Operation, Rugged, and Reliable

The 45MG is an advanced ultrasonic thickness gauge packed with standard measurement features and software options. This unique instrument is compatible with the complete range of Olympus dual element and single element thickness gauge transducers, making this innovative instrument an all-in-one solution for virtually every thickness gauge application.

Standard Features

In its basic configuration the 45MG is a simple and straightforward gauge that requires minimal operator training to tackle most common thickness gauging applications. With additional optional software options and transducers however, the 45MG can become significantly more advanced and take on applications well beyond that of a typical entry-level gauge. Furthermore, most options are available individually at the time of purchase or can be added in the future as your needs change.

  • Compatible with full line of Olympus dual element transducers for thickness measurements on internally corroded metals
  • Min./Max. mode
  • Two Alarm modes
  • Differential mode
  • Time-based B-scan
  • Reduction Rate
  • Gain Adjust (standard, high, and low)
  • Password instrument lock

45MG Ultrasonic Thickness Gauge
45MG with optional protective rubber boot and stand

Optional Features

From a simple corrosion gauge to a multi-purpose precision thickness gauge with only a few key strokes. The 45MG offers five code-activated software options that makes it one of the most versatile thickness gauges in the industry.

  • Echo-to-Echo / THRU-COAT®:Using Echo-to-Echo, the true metal thickness is displayed and the thickness of the coating layer will be ignored. THRU-COAT measures metal and nonmetallic coating thicknesses, each adjusted for their correct sound velocities. There is no need to remove paint or coatings fromsurfaces.
  • Single Element:For very precise thickness measurements on many materials, including metals, plastics, composites, glass, and ceramics. Compatible with single element Microscan transducers ranging from 2.25 MHz to 30 MHz.
  • Single Element High Penetration:For thickness measurement on thick or highly attenuating materials such as fiberglass or cast metals. Compatible with single element Microscan transducers ranging from 0.5 MHz to 30 MHz. Included is the Single Element option.
  • Data Logger:The 45MG has a full-featured internal bidirectional alphanumeric data logger that is designed to easily store and transfer thickness readings and waveform data. Includes GageView™ interface program, a Windows-based application.
  • Live A-scan with Waveform Adjust:This optional Live A-scan mode allows users to view the ultrasound waveform (or A-scan) directly on the gauge’s display, verify the thickness measurement, and make manual adjustments to gain and blanking settings to maximize measurement performance in challenging applications. This helpful option features Manual Gain Adjust, Extended Blanking, First Echo Blank, Range, and Delay.

Built for Tough Environments

  • 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-810G, Method 511.4, Procedure I.
  • Shock tested using MIL-STD-810G, Method 516.5, Procedure I, 6 cycles each axis, 15 g, 11 msec Half sine.
  • Vibration tested using MIL-STD-810G, Method 514.5, Procedure I, Annex C, Fig. 6, general exposure: 1 hour each axis.
  • Wide operating temperature range
  • Optional protective rubber boot with gauge stand
indoor a-scan display
Indoor display setting, optional A-scan mode
Designed for Easy Operation

  • Simple keypad for right hand/left hand operation
  • Easy operator interface with direct access to most functions
  • Internal and removable microSD memory card storage
  • USB communication port
  • Optional alphanumeric data logger with 475,000 thickness readings or 20,000 waveforms
  • Default/Custom single element transducer setups (optional)
  • Password protected instrument lock
  • Color transflective QVGA display with indoor and outdoor color settings for superior clarity
Outdoor a-scan
Outdoor display setting, optional A-scan mode
Measurements Dual element transducer measurement mode Time interval from a precision delay after the excitation pulse to the first echo
Echo-to-Echo (optional) Time interval between two successive back-wall echoes to eliminate paint or coating thickness
THRU-COAT® measurement (optional) Measurement of true metal and coating thicknesses with a single back-wall echo (with D7906-SM, D7906-RM, and D7908 transducers)
Single element transducer measurement modes (optional) 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)
Thickness range 0.080 mm to 635 mm (0.003 in. to 25.0 in.) depending on material, transducer, surface conditions temperature, and selected configuration (Full range requires single element option)
Material velocity range 0.508 mm/μs to18.699 mm/μs (0.020 in./μs to 0.7362 in./μs)
Resolution (selectable) Low: 0.1 mm (0.01 in.) Standard: 0.01 mm (0.001 in.) Single Element option: 0.001 mm (0.0001 in.)
Transducer frequency range Standard: 2.25 MHz to 30 MHz (-3 dB) High Penetration (Single Element option): 0.50 MHz to 30 MHz (-3 dB)
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: 91.1 mm x 162 mm x 41.1 mm (3.59 in. x 6.38 in. x 1.62 in)
Weight 430.9 g (0.95 lb)
Power Supply 3 AA batteries/USB power supply
Battery life operating time 3 AA alkaline: 20 to 21 hours 3 AA NiMH: 22 to 23 hours AA Lithium: 35 to 36 hours
Standards Designed for EN15317
Display Color transflective QVGA display Liquid crystal display, display area 54.61 mm x 41.15 mm (2.15 in. x 1.62 in.)
Rectification Full wave, RF, half-wave positive, or half-wave negative (Waveform option)
Inputs/Outputs USB 2.0 client
Memory card Maximum capacity: 2 GB removable microSD memory card
Internal Data Logger (Optional) Data logger The 45MG identifies, stores, recalls, clears, and transmits thickness readings, waveform images, and gauge configuration information through USB or microSD.
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 structure Six standard or custom application-specific file structures
Reports On-gauge reporting of summary with statistics, Min./Max.

Standard Package

  • 45MG digital ultrasonic thickness gauge
  • AA alkaline batteries
  • 2-step test block and couplant
  • USB cable
  • User's manual on CD
  • Measurement features: Min./Max. mode, two alarm modes, Differential, mode, B-scan, Reduction Rate, Programmable Lock

Software Options

  • 45MG-SE (U8147022): Single Element option to use single element transducers with frequency range of 2.25 MHz to 30 MHz.
  • 45MG-HP (U8147023): Single Element High Penetration option to use single element transducers with frequency range of 0.5 MHz to 30 MHz.
  • 45MG-EETC (U8147021): Echo-to-Echo and THRU-COAT®
  • 45MG-WF (U8147019): Waveform option
  • 45MG-DL(U8147020): Internal data logger including GageView interface program

Optional Accessories

  • MICROSSD-ADP-2GB (U8779307): 2 GB External microSD memory card
  • 45MG-RPC (U8779676): Rubber protective boot with stand


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