DeFelsko PosiTector UTG

Ultrasonic Wall Thickness Gages


Measures the wall thickness of materials such as steel, plastic and more using ultrasonic technology. Ideal for measuring the effects of corrosion or erosion on tanks, pipes or any structure where access is limited to one side. Multiple echo (UTG M) Thru-Paint models measure the metal thickness of a painted structure without having to remove the coating.

  • Precision ultrasonic transducers provide fast, accurate readings
  • Solvent, acid, oil, water, and dust resistant – weatherproof
  • Pre-programmed velocities – Simply select from a list of common materials or enter your own with ease
  • Min Scan - Measurement rate of up to 20 readings per second with onscreen min and max for quick inspection over a large area
  • PosiTector interchangeable platform – attach any PosiTector probe to a single gage body
  • USB, WiFi, and Bluetooth connectivity to PosiSoft PC, Mac, and Smartphone software

Conforms to ASTM E797

DeFelsko PosiTector UTG CX1


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DeFelsko PosiTector UTG Standard Ultrasonic Wall Thickness Gages: 6 Models Available
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DeFelsko PosiTector UTG C1 DeFelsko PosiTector UTG CA1 DeFelsko PosiTector UTG CX1
DeFelsko PosiTector UTG C1DeFelsko PosiTector UTG CA1DeFelsko PosiTector UTG CX1
PROBE TYPEPROBE TYPEPROBE TYPE
5 MHz Dual Element5 MHz Dual Element5 MHz Dual Element
THRU-PAINT CAPABILITYTHRU-PAINT CAPABILITYTHRU-PAINT CAPABILITY
NoNoNo
MEASURING RANGE*MEASURING RANGE*MEASURING RANGE*
0.040" to 5.000"
1.00 to 125.00 mm
0.040" to 5.000"
1.00 to 125.00 mm
0.100" to 5.000"
2.50 to 125.00 mm
ACCURACYACCURACYACCURACY
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm

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DeFelsko PosiTector UTG CLF1 DeFelsko PosiTector UTG M1 DeFelsko PosiTector UTG P1
DeFelsko PosiTector UTG CLF1^DeFelsko PosiTector UTG M1DeFelsko PosiTector UTG P1
PROBE TYPEPROBE TYPEPROBE TYPE
5 MHz Dual Element5 MHz Contact15 MHz Single Element Delay Line
THRU-PAINT CAPABILITYTHRU-PAINT CAPABILITYTHRU-PAINT CAPABILITY
NoYesYes
MEASURING RANGE* - MULTIPLE ECHOSINGLE ECHO MEASURING RANGE*STEEL MEASURING RANGE*
NA0.100" to 5.000"
2.50 to 125.00 mm
0.008" to 0.475"
0.2 to 12.0 mm
MEASURING RANGE*MULTIPLE ECHO MEASURING RANGE*PLASTIC MEASURING RANGE*
0.040" to 5.000"
1.00 to 125.00 mm
0.100" to 5.000"
2.50 to 125.00 mm
0.008" to 0.475"
0.2 to 12.0 mm
ACCURACYACCURACYACCURACY
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm

^ 2.25 MHz Dual Element transducer with cabled probe, designed for measuring attenuative materials such as cast iron
* Measurement range is for carbon steel and depends upon surface condition, temperature and material.


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DeFelsko PosiTector UTG Advanced Ultrasonic Wall Thickness Gages: 6 Models Available
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DeFelsko PosiTector UTG C3 DeFelsko PosiTector UTG CA3 DeFelsko PosiTector UTG CX3
DeFelsko PosiTector UTG C3DeFelsko PosiTector UTG CA3DeFelsko PosiTector UTG CX3
PROBE TYPEPROBE TYPEPROBE TYPE
5 MHz Dual Element5 MHz Dual Element5 MHz Dual Element
THRU-PAINT CAPABILITYTHRU-PAINT CAPABILITYTHRU-PAINT CAPABILITY
NoNoNo
MEASURING RANGE*MEASURING RANGE*MEASURING RANGE*
0.040" to 5.000"
1.00 to 125.00 mm
0.040" to 5.000"
1.00 to 125.00 mm
0.100" to 5.000"
2.50 to 125.00 mm
ACCURACYACCURACYACCURACY
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm

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DeFelsko PosiTector UTG CLF3 DeFelsko PosiTector UTG M3 DeFelsko PosiTector UTG P3
DeFelsko PosiTector UTG CLF3^DeFelsko PosiTector UTG M3DeFelsko PosiTector UTG P3
ACCURACYACCURACYACCURACY
5 MHz Dual Element5 MHz Contact15 MHz Single Element Delay Line
THRU-PAINT CAPABILITYTHRU-PAINT CAPABILITYTHRU-PAINT CAPABILITY
NoYesYes
MEASURING RANGE* - MULTIPLE ECHOSINGLE ECHO MEASURING RANGE*STEEL MEASURING RANGE*
NA0.100" to 5.000"
2.50 to 125.00 mm
0.008" to 0.475"
0.2 to 12.0 mm
MEASURING RANGE*MULTIPLE ECHO MEASURING RANGE*PLASTIC MEASURING RANGE*
0.040" to 5.000"
1.00 to 125.00 mm
0.100" to 5.000"
2.50 to 125.00 mm
0.008" to 0.475"
0.2 to 12.0 mm
MEASURING RANGE*MULTIPLE ECHO MEASURING RANGE*PLASTIC MEASURING RANGE*
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm

^ 2.25 MHz Dual Element transducer with cabled probe, designed for measuring attenuative materials such as cast iron
* Measurement range is for carbon steel and depends upon surface condition, temperature and material.


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DeFelsko PosiTector UTG Ultrasonic Wall Thickness Gages Probe Only: 6 Models Available
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PosiTector gage bodies are compatible with the full range of PosiTector 6000, 200, DPM, SPG, RTR, SST, SHD and UTG probes.

DeFelsko PosiTector PRBUTGC DeFelsko PosiTector PRBUTGCA DeFelsko PosiTector PRBUTGCX
DeFelsko PosiTector PRBUTGCDeFelsko PosiTector PRBUTGCADeFelsko PosiTector PRBUTGCX
PROBE TYPEPROBE TYPEPROBE TYPE
5 MHz Dual Element5 MHz Dual Element5 MHz Dual Element
THRU-PAINT CAPABILITYTHRU-PAINT CAPABILITYTHRU-PAINT CAPABILITY
NoNoNo
MEASURING RANGE*MEASURING RANGE*MEASURING RANGE*
0.040" to 5.000"
1.00 to 125.00 mm
0.040" to 5.000"
1.00 to 125.00 mm
0.100" to 5.000"
2.50 to 125.00 mm
ACCURACYACCURACYACCURACY
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm

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DeFelsko PosiTector PRBUTGCLF DeFelsko PosiTector PRBUTGM DeFelsko PosiTector PRBUTGP
DeFelsko PosiTector PRBUTGCLF^DeFelsko PosiTector PRBUTGMDeFelsko PosiTector PRBUTGP
PROBE TYPEPROBE TYPEPROBE TYPE
5 MHz Dual Element5 MHz Contact15 MHz Single Element Delay Line
THRU-PAINT CAPABILITYTHRU-PAINT CAPABILITYTHRU-PAINT CAPABILITY
NoYesYes
MEASURING RANGE* - MULTIPLE ECHOSINGLE ECHO MEASURING RANGE*STEEL MEASURING RANGE*
NA0.100" to 5.000"
2.50 to 125.00 mm
0.008" to 0.475"
0.2 to 12.0 mm
MEASURING RANGE*MULTIPLE ECHO MEASURING RANGE*PLASTIC MEASURING RANGE*
0.040" to 5.000"
1.00 to 125.00 mm
0.100" to 5.000"
2.50 to 125.00 mm
0.008" to 0.475"
0.2 to 12.0 mm
ACCURACYACCURACYACCURACY
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm
± 0.001"
± 0.03 mm

^ 2.25 MHz Dual Element transducer with cabled probe, designed for measuring attenuative materials such as cast iron
* Measurement range is for carbon steel and depends upon surface condition, temperature and material.

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PosiSoft Suite of Software
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Four FREE and unique ways to view and report your PosiTector and PosiTest data. Learn More


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Do your instruments require any formal training for use? Do you offer ‘demo’ models?

No. Our instruments are designed for simple operation, feature easy-to-use menus, both full and quick instruction manuals, and helpful videos. In lieu of demonstration models, we provide unlimited technical support via telephone and/or email, and a limited 30-day money back guarantee.

Is the PosiTector UTG calibrated at the factory?

The PosiTector UTG arrives fully calibrated and ready to measure. A Long-Form Certificate of Calibration traceable to NIST is included, which documents actual readings taken by your instrument at our calibration laboratory on standards traceable to a national metrology institute. Beware of ‘Certificates’ or ‘Certificates of Conformance’ offered by competitors. These typically do not include actual instrument readings, and are often insufficient to meet common quality equirements.

Verification of gage calibration and accuracy can be performed with the accessory Certified Step Block. If necessary, the PosiTector UTG operator can easily perform a calibration adjustment to align the gage’s thickness readings to match that of a known reference sample.

Can I measure the thickness of non-metallic materials like plastic and rubber with the PosiTector UTG?

Yes! The PosiTector UTG features several preprogrammed sound velocities for common materials. For best accuracy, make a simple adjustment to a known sample thickness of the material or quickly enter the material’s sound velocity into the gage. The PosiTector UTG C can be adjusted to a broad range of sound velocities spanning from 0.0492 to 0.393 mils/µs (1250 to 10000 m/s).

Can the PosiTector UTG measure cast/ductile iron or cast aluminum?

Our PosiTector UTG ultrasonic wall thickness instruments are designed to accurately measure the wall thickness of carbon steel, aluminum, stainless steel and plastic.

PosiTector UTG probes utilize a 5MHz transducer. Like other UT (ultrasonic wall thickness) gages utilizing a 5MHz transducer, the PosiTector UTG is challenged to provide reliable wall thickness measurements on cast metals including iron, aluminum and zinc. The internal structure of the cast metal typically interferes with the transmission of a 5MHz sound impulse causing the gage to yield inaccurate thickness readings.

What is the difference between the PosiTector UTG C and PosiTector UTG M?

The PosiTector UTG C (Corrosion) single echo probe uses a dual-element transducer, a focused “V-path”, and V-path compensation to accurately measure the thickness of metals with particularly heavy corrosion or pitting. The UTG C single echo probe will not ignore the thickness of the exterior coating: for best measurement accuracy, it may be necessary to remove any coating present at the point of measurement.

The PosiTector UTG M (Multi-echo) probe uses a single element transducer to accurately measure the metal thickness of a new or lightly corroded structure while ignoring the thickness of protective coatings. The ultrasonic beam travels in a straight path to the material’s back wall at 90° relative to the surface. When three consecutive back wall echoes are detected, the probe makes a time-based calculation to eliminate the coating thickness from the gage reading.

If there is paint on the surface and it can’t be removed, can the PosiTector UTG C be used?

Yes, but coatings such as paint have a slower sound velocity than metal. This means that coating ‘appears’ much thicker to the instrument than it actually is, and can substantially affect the reading. Using Thru-Paint technology, the PosiTector UTG M multi-echo probe disregards the exterior coating thickness on a painted metal structure and reports only the metal thickness.

Can the UTG measure the thickness of materials with heavy corrosion on the back/inside?

The PosiTector UTG C (Corrosion) is a proven solution for measuring the thickness of metal structures with pitting and/or moderate-to-severe corrosion on the back wall.

How often should the PosiTector probe be recalibrated?

PosiTector probes include a Certificate of Calibration with no expiry or end date. They have no shelf life, therefore the length of time in the field is not a good indicator for recalibration intervals. Many organizations with quality programs and recertification programs require annual recalibrations, and this is a good starting point for most users. Manufacturers recommend that customers establish calibration intervals based upon their own experience and work environment. Based on our product knowledge, data and customer feedback, a one year calibration interval from the date the instrument was placed in service is a good starting point.