NDT Systems: Ultrasonic Transducers

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Angle Beam Transducers

1 - AWS Series
2 - LSA Standard Series
3 - Quick Change Series
4 - Dual Element Angle Beam
5 - Mini Potted Angle Beam

Quick Change Models (3)

OPTIMA Quick Change Angle Beam Transducers & Wedges are ideally suited for use where access is limited, on relatively thin materials, or for more precise flaw location and evaluation. The quick change feature is convenient when it is necessary to use different transducer frequencies and /or refracted angle wedges during an inspection or evaluation.

Quick Change Transducers feature smaller size circular elements, higher frequencies and a one-quarter wave impedance matching epoxy face. The wear resistant transducer label is also frequency color coded for easy identification.

Quick Change Wedges combine our acoustically transmissive sound path material with an attenuating material in the direct path of the internally refracted sound beam. Along with internal wedge serrations and radiused external refracting surface, the wedges are permanently engraved with refracted beam angle, centerline, and a pair of closely spaced wear-surface parallel lines which show uneven wear and possible undesired changes in the refracted beam angle. This unique design, paired with NDT Systems' Quick Change Transducer, produces a highly noise-free transducer/wedge combination.

Quick Change Angle Beam Transducers
Frequency	Element Diameter - Inches
MHz	0.25	0.375	0.50
1.0	-------------	-------------	TAB014
2.25	TAB022	TAB023	TAB024
3.5	TAB032	TAB033	TAB034
5.0	TAB052	TAB053	TAB054
7.5	TAB072	TAB073	TAB074
10.0	TAB102	TAB103	TAB104

Element Diameter	*Quick Change Wedge Dimentions - Inches*
Element Diameter	Angle	C	D	E
0.25	30	0.31	0.45	0.25
	45	0.36	0.45	0.39
	60	0.44	0.45	0.39
	70	0.44	0.45	0.45
	90	0.69	0.45	0.51
0.375	30	0.33	0.55	0.31
	45	0.38	0.55	0.48
	60	0.55	0.55	0.54
	70	0.55	0.55	0.57
	90	0.84	0.55	0.63
0.50	30	0.39	0.70	0.39
	45	0.50	0.70	0.55
	60	0.57	0.70	0.64
	70	0.68	0.70	0.69
	90	1.04	0.70	0.74

Quick Change Angle Beam Wedges
Refracted Angle	Element Diameter - Inches
Refracted Angle	0.25	0.375	0.50
30	TAW230	TAW330	TAW430
45	TAW245	TAW345	TAW445
60	TAW260	TAW360	TAW460
70	TAW270	TAW370	TAW470
90	TAW290	TAW390	TAW490

Probe Dimension	Quick Change - Element Size
Probe Dimension	0.25	0.375	0.50
A	0.45	0.58	0.70
B	0.38	0.38	0.42


	Standard & AWS Models (1 & 2)

OPTIMA Standard Angle Beam transducers are best suited for relatively flat, large, unconfined surfaces where greater coverage is feasible. Common applications include weld inspection and detection/evaluation of off-axis, three-dimensional, or radially oriented flaws. Select lower frequency models for castings and other coarse-grained materials.

OPTIMA AWS Angle Beam models meet or exceed requirements of the AWS D1.1 Structural Welding Code and other common codes, standards, and specifications.

Features — Standard and AWS Angle Beam transducers feature all-metal cases for maximum durability, epoxy faces for optimum acoustic impedence matching with wedges, frequency color-coded labels, and captive screws for ease of interchanging wedges. Damping is designed to produce an optimum combination of high gain, sensitivity, resolution and signal-to-noise when used with standard pulse-echo ultrasonic flaw detectors.

Wedges - Acrylic shearwave wedges are available in two configurations, each designed to greatly reduce internal reflection noise. Serrated wedges integrally machined grooves that refract and scatter internal reflections; the "snail" wedge continuously refracts and reflect the internal soundbeam to, in effect, "trap" unwanted noise, providing a better signal-to-noise ratio.

Serrated wedges and snail wedges are supplied for all standard angle beam transducer models. Only snail wedges are available for AWS transducer models.

Engraved onto the side of the wedge is the Model Number, refracted shearwave beam angle, incident beam centerline, and a pair of closely-spaced lines parallel with the wear-face of the wedge. These lines show uneven wear, thus indicating possible undesired changes in refracted beam angle.

Element Frequency	LSA Transducers Element Size - Inches
Element Frequency	0.50 x 0.50	0.50 x 1.00	0.75 x 1.00	1.00 x 1.00
1.0	LSA0144	LSA0148	LSA0168	LSA0188
2.25	LSA0244	LSA0248	LSA0268	LSA0288
3.5	LSA0344	LSA0348	LSA0368	LSA0388
5.0	LSA0544	LSA0548	LSA0568	LSA0588

Refracted Angle	Wedges - LSA Series (Fits Element Dimention)
Refracted Angle	0.50 x 0.50	0.50 x 1.00	0.75 x 1.00	1.00 x 1.00
30	LSW4430	LSW4830	LSW6830	LSW8830
45	LSW4445	LSW4845	LSW6845	LSW8845
60	LSW4460	LSW4860	LSW6860	LSW8860
70	LSW4470	LSW4870	LSW6870	LSW8870
90	LSW4490	LSW4890	LSW6890	LSW8890

Element Frequency	AWS Transducers Element Size - Inches
Element Frequency	0.625 x 0.625	0.625 x 0.75	0.75 x 0.75
2.25	AWS0255	AWS0256	AWS0256

Refracted Angle	AWS Wedges
45	AWW045
60	AWW060
70	AWW070

Standard And AWS Series Dimentions
Probe Dimentions	Element Size - Inches (Standard Series)				AWS Type All Sizes
Probe Dimentions	0.50 x 0.50	0.50 x 1.00	0.75 x 1.00	1.00 x 1.00	AWS Type All Sizes
A	1.05	1.58	1.58	1.75	1.25
B	0.75	0.75	1.00	1.25	0.85
C	0.75	0.75	0.75	0.75	0.75
D	0.81	1.31	1.31	1.38	1.00


	Mini Angle Beam Models (5)

NDT Systems' OPTIMA Mini Angle Beam Transducers are very small and permit testing in highly confined areas, on small parts and contoured surfaces, and simplify gaining access between closely-spaced fasteners. Having a narrow, restricted soundbeam also facilitates more precise evaluation and mapping of flaws.

Features — Element and wedge are permanently mounted in a compact aluminum case with the exclusive OPTI-GRIP surface for ease of handling. Internal serrations and bi-material wedge dampening reduce noise. Th wedge material extends slightly beyond the case surfaces, thus permitting a small amount of wedged surface wear before replacement is necessary.

Color-coded labels permit frequency selection at a glance. Designed with an optimum combination of sensitivity and gain, OPTIMA Mini Angle Bema transducers can be used with any standard flaw detector.

Frequency MHz	Refracted Angle	Mini Potted Angle Beam - Element Dimentions - In
Frequency MHz	Refracted Angle	0.19 x 0.19	0.25 x 0.25	0.38 x 0.38	0.50 x 0.50
2.25	45	MPA0214	MPA0224	MPA0234	MPA0244