Contact Transducers

Microscan^™ transducers are frequently used for a variety of applications with thickness gauges, flaw detectors, and other ultrasonic instruments.

Microscan transducer part numbers reflect the connector designation:
RM = Right Angle Microdot^™
SM = Straight Microdot
RB = Right Angle BNC
SB = Straight BNC
SU = Straight UHF

When selecting a transducer, please review the chart below or consult the transducer frequency range in the instruction manual that was shipped with your gauge.

Contact Transducers

One of the advantages of a Microscan contact transducer is its versatility; a single transducer can cover a broad thickness range in many engineering materials. Contact transducers are constructed with the unique WC-5 wearplate for greater durability and a longer life.

RM = Right Angle Microdot; SM = Straight Microdot; SB = Straight BNC
†High Penetration Transducer *Use with Holder, P/N 2133 **Use with Holder, P/N 2132

Delay Line Transducers

SONOPEN^® Transducers

Delay Line Transducers

Microscan delay line transducers provide excellent performance on very thin materials, elevated temperatures, or in applications that require a high degree of thickness resolution.

RM = Right Angle Microdot; SM = Straight Microdot; SB = Straight BNC † High Penetration Transducer *Used with Holder, P/C 2133

Replaceable Delay Lines

Standard Delay Lines

Standard delay lines are used in many applications. Special conditions such as high surface temperature, the curvature of the material, or hard-to-access areas may require the use of special delay lines.

*Exact range depends on material sound velocity, transducer frequency, part geometry, and surface condition.

High-Temperature Delay Lines

High-temperature delay lines function as a protective buffer between the hot surface of the test piece and the transducer's crystal. At elevated temperatures, intermittent contact is recommended to protect the transducer from thermal damage.

Immersion Transducers

Immersion Transducers

Microscan immersion transducers are designed to transmit and receive ultrasound in water. Thickness measurements by immersion technique are often preferred when the test piece has a complex geometry or in online applications. Typical offline applications include wall thickness measurements on small diameter plastic or metal tubing, scanned or rotary measurements and thickness measurements on sharply curved parts. Transducer focusing may be necessary depending on the application.

Bubblers

We offer bubblers for easy implementation of immersion testing. They act as a holder for the transducers to maintain consistent water flow from transducer to test surface, and prevent the accumulation of air bubbles on the transducer face.

* The B103 has a V-notch shaped opening; the B103A and B103W are flat.

Bubbler Transducer Assembly

RBS-1 Immersion Tank

RBS-1 immersion tank is designed to simplify ultrasonic thickness measurements using immersion techniques. It consists of a clear acrylic tank, a submersible pump and a transducer fixture in a single, portable unit. It is ideal for offline thickness measurements on metal, glass and plastic products such as small containers, pipe or tubing, sheets or plates or machined parts.

Tank
• 5.5 x 12 x 8 in (140 x 305 x 200 mm)
• 0.83 gallon (3.1 liter) capacity

Pump
• 0 to 0.25 gallons (0 to 0.9 liters) per minute
• 115 or 230 V, 30 Watt (voltage range 90 to 135 VAC), 50 to 60 Hz
• Submersible (ground fault interrupter circuit recommended)

Couplants

The use of couplant is almost always necessary to provide acoustic coupling between the transducer and the test piece. We offer various types of couplants to suit virtually all applications.

Test Blocks & Cables

Calibration Test Blocks

Test blocks are necessary for the calibration of ultrasonic thickness gages and should be used to maintain and verify the accuracy, dependability and reliability of ultrasonic measurements. Blocks are held to tighter tolerances than called out in ASTM E797 code. Metric test blocks are available.

Transducer Cables
Olympus-NDT offers a wide selection of transducer cables suitable for all ultrasonic thickness gaging instrumentation.

Standard

• Standard cables are recommended for normal usage.

Heavy Duty - Teflon®

• Heavy duty, Teflon® (HD) transducer cables may provide durability and longer life.

Waterproof

• Waterproof (W) cables are recommended in many tests with immersion transducers. These cables provide a waterproof connection good to about 30 ft (10 m) of fresh water. At greater depths, special cables are available.

Heavy Duty - Armored PVC Jacket

• Heavy duty, armored PVC jacket (HDAP) transducer cables have a spiral stainless steel jacket with a solid PVC coating. Maximum length is 20 ft (7 m).

Heavy Duty - Armored Silicone Jacket

• Heavy duty, armored super flexible silicone jacket (HDAS) transducer cables combine a spiral stainless steel jacket with a heavy silicone coating for great flexibility. Length can be specified up to 20 ft (7 m).

Heavy Duty - Stainless Steel

• Heavy duty, armored stainless steel jacket (SSA) transducer cables are recommended for heavy and industrial use provide flexibility, protection and long life.

Transducer Selector

Precision Thickness Gage Transducer Ranges for Metals, Plastics and Miscellaneous Materials

These tables are intended as a general guideline only, listing only the most commonly used Microscan transducers and typical material thickness ranges when used with the Olympus Model 38DL PLUS and 45MG gages (45MG-SE or 45MG-HP software option required.) All thickness ranges are approximate and should be used as a starting point. The actual measurement range in a given case will always depend on instrument setup as well as material properties such as part geometry, surface condition, and grain structure.

In many cases, these measurement ranges will require an optimized gage setup where gain and blanking have been adjusted by a trained operator. The pre-programmed transducer default setups can always be used as a starting point, but performance can be often optimized and range extended with some simple setup adjustments.

Your choices also depend on geometry, temperature and resolution. Please consider the follloiwng before making your selections.