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Elcometer UG20DL Underwater Thickness Gauge

Product Description


The UG20DL is an underwater material and coating thickness gauge ideal for offshore inspections.

Waterproof to a depth of 300 metres (1,000 feet) the UG20DL offers many features and benefits of the CG100 series in an easy to use brightly lit gauge.

Offering both dual & single element transducers the UG20DL’s memory allows users to store up to 5,000 individual readings, together with the A-Scan waveform which can be downloaded to the data management software for further analysis on dry land.


    • 300 metre (1000 ft.) depth rating
    • Single membrane & dual element probe transducers
    • Automatic probe recognition & zero function
    • Pulse-Echo, Pulse-Echo w/Coating, Echo-Echo and TCG (time corrected gain)
    • Data Storage: Alpha Numeric & Sequential w/ID
    • Data output and storage: 5,000 readings and waveforms or A-Scans
    • Data management software

Model & Part Number
UG20DL Underwater Ultrasonic Gauge

Material thickness digits display
Measurement Mode
Dual Element: PE, EE (ThruPaint™), PECT
Single Element: Triple-Echo (ThruPaint™)
Measurement Rate
4 readings per second

Measurement Range
PE: 0.63 – 500mm (0.025 – 19.999 inches)
EE: 2.54 – 102mm (0.100 – 4.000 inches)
PECT: 0.63 – 500mm (0.025 – 19.999 inches)
PECT: 10.0 – 254μm (0.001 – 0.100 inches)
Triple: 1.00 – 150mm (0.040 – 6.000 inches)

Measurement Accuracy
±0.01mm (±0.001 inch)

Measurement Resolution
0.01mm (0.001 inch)

Velocity Calibration Range
1250 – 13,995m/s (0.0492 – 0.5510in/ms)

Additional Features:
stored in memory with each reading for review on PC
Calibration setups
1 user programmable & 8 pre-calibrated velocities for:
aluminium, cast iron, iron, PVC, polyurethane, polystyrene, stainless steel & steel
Waterproof – depth ratings
maximum depth 300 metres (1,000 feet) – equivalent to IP68
Pulser type
dual square wave pulsers
time corrected gain (TCG), automatic gain control (AGC) with 100dB range,
or selectable gain: vlow, low, medium hi or vhi
precision 25MHz TCXO with single shot
100MHz 8bit ultra low power 8 bit digitizer
Data logging
– 5,000 with A-scan image & gauge settings in one batch
– sequential and grid logging
– alpha numeric batch identification
Calibration Options
velocity & material type
Transducer Probe Type
dual and single element
Transducer Frequency Range
1 – 10MHz
Transducer recognition
custom automatic (dual transducers) & manual – selectable from a list
V-path / dual path error correction
Probe Zero
automatic (dual transducers) & manual (via integrated probe disk)
12.7mm (1/2″) 4.5 digit LCD
Display Refresh Rate
Units (selectable)
mm or inches
on / off / auto
Repeatability / Stability Indicator
Battery Type
3 x AA alkaline
Battery Life (approximate)
50 hours (15 hours with backlight on)
Low Battery Indicator
Battery Save Mode
Operating Temperature
30 to 60ºC (-20 to 140ºF)
Size (length x diameter)
229.0 x 60.33mm (9.0 x 2.4 inches)
Weight (including batteries)
680g (24.0oz)
Case design
high strength transparent plastic housing with
single, magnetically coupled, multifunction switch
Transducer connctor type
LEMO underwater connectors
RS232 Interface
Packing List
Elcometer NDT UG20DL gauge, couplant, carry case, user manual, test certificate,
3 x AA batteries, software, transfer cable, spare gaskets and lubrication set

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