Ultrasonic examination (UE) provides a more detailed and accurate analysis of cylinders than traditional hydrostatic testing. UE detects corrosion and flaws better without having to drain cylinders or take them out of service. It also requires fewer technicians than other testing methods. Digital Wave Corporation produces digital UE systems that can test all cylinder sizes using one machine by replacing sensor heads. Their systems are more flexible and capable of adapting to changing regulations than other UE equipment.

1. ULTRASONIC EXAMINATION:
the FUTURE OF CYLINDER TESTING
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2. Why UE?
> Residual contents do not have to be drained
> Cylinders are not de-valved
> Ultrasonic testing provides a more detailed
analysis than the standard hydrostatic test
> UE system requires less operators/technicians
> Not affected by temperature change like
a hydrostatic test
> DOT Approved
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3. Why UE?
UE detects corrosion better than a visual inspection which can be cursory and subjective.
“Because ultrasonic testing produces highly accurate measurements, the Department of
Transportation waived the required internal visual examination for cylinders used in certain
services.”
- Jerrold D. Sameth, Chie f Te chno lo g ist, Dire cto r o f g as packa g ing , Ma the so n
Tri-G as We lding Ma g azine , Fe b. 20 0 7
Did yo u kno w? Subje ctive visual
inspe ctio n is the m ain cause fo r
cylinde r re je ctio n!
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4. Why UE?
Hydrotests only give an averagewall thickness
THIS CYLINDER PASSED HYDRO!
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5. How Does UE Work?
A signal is emitted from a transducer; when the signal meets
a flaw in the cylinder, it is reflected back to the transducer
Thickness Scan
Flaw Scan
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6. Digital UE measures actual wall thickness. Gouges and pitting that don’t meet the reject requirements
in CGA C-6 won’t cause rejects. Don’t let a subjective visual throw away your good cylinders.
UE has a lower reject rate than visual!
Actual Wall
Thickness
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7. How Does UE Work?
C-scan maps assures you that indications are actualflaws.
Only flaws that meet the DOT criteria will cause rejects.
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8. How Does UE Work?
Digital Wave systems are capable of
handling cylinders from 3.2”OD to
10.5”OD, and lengths from 0”to 65”
There are no proprietary electronic
components – parts can be purchased
easily, worldwide.
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9. The Digital Wave Difference
The DOT requires at least a 10% beam overlap for UE systems; Digital Wave's system
provides a 25% beam overlap.
UE systems come in two formats: digital (newer technology) and analog (older technology).
Digital systems digitize the waveforms and store them in the computer. This permits an infinite
variety of analysis to be performed providing complete fle xibility to adapt to yo ur future ne e ds . To
do this with analog systems you have to redesign the electronic circuits.
Digital Wave, as the name implies, manufactures dig italsyste m s.
AllUE syste m s are NO T cre ate d
e q ual!
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10. The simple, single-sensor head design and multiple-axis motion control allow for all cylinder sizes
to be tested with one machine.
With Digital Wave's innovative design, just swap out the 2.25MHz sensor with a 3.5MHz sensor to
test small cylinders. No o the r UE m achine has this capability.
The Digital Wave DifferenceThe Digital Wave Difference
The simple, single-sensor head design and multiple-
axis motion control allow for all cylinder sizes to be
tested with one machine.
With Digital Wave's innovative design, just swap out
the 2.25MHz sensor with a 3.5MHz sensor to test small
cylinders.
No o the r UE m achine has this capability!
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11. The Digital Wave Difference
Digital Wave systems scan out-of-round cylinders with ease and feature automatic cylinder
size detection.
Digital Wave systems scan through most labels and bonded paint.
They also won't reject on most draw marks or clear coat scratches.
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12. The Digital Wave Difference
Do n't buy ne w e q uipm e nt whe n the re g ulatio ns chang e . . .
Digital Wave's design provides superior scanning flexibility and can adapt to
changing regulatory requirements.
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13. Why is UE Better?
Environmentally friendly
(in some areas of the world, water from hydrotesting is considered hazardous waste!)
Uses far less water than a standard hydrotest
A single technician can run hundreds of cylinders a day!
UE SAVES YOU MONEY!!
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14. Digital Wave's UE Systems are the
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WAVE OF THE FUTUREWAVE OF THE FUTURE
Contact Us Today!
Digital Wave Corporation
13760 E Arapahoe Road
Centennial, CO USA 80112
www.digitalwavecorp.com
Keith Fountain
Sales Manager
Keithf@digitalwavecorp.com
P 303.790.7990
F 303.790.7567