Welcome to Sigma Transducers



	Contact transducers can be manufactured with the connector of your choice.


	Contacts with BNC


	Dual and single special low frequency contacts in brass housings

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SIGMA Contact Transducers are designed to provide wide use for testing where the part to be inspected is generally flat. SIGMA Contact Transducers are fabricated in stainless steel cases, with Aluminum Oxide epoxy wear faces. This sturdy construction will provide long life under the toughest conditions.

Available variations to SIGMA Contact Transducers include radiused surfaces for maximum coupling to pipes, and ground focused chips with compensating wear faces (lenses that allow flat or radiused operation). Focusing is limited by near field.
SIGMA Contact Transducers are available in three standard types:

MINIATURE-.38 to .75 inches in diameter X .75" long

· ELEMENT SIZE-.125 to .50 inch diameter

· FREQUENCY-1.0 to 10MHz

· CONNECTOR-Lemo 01 or Microdot

STANDARD-.75 to 1.25 inches diameter X 1.25" long

· ELEMENT SIZE-.50 to 1.00 inches in diameter

· FREQUENCY-.50 to 10MHz

· CONNECTOR-BNC

THREADED FOR DELAY LINE

· ELEMENT SIZE- as above either

· FREQUENCY- as above either

· CONNECTOR- as above either

For general higher temperature use, see High Temperature Transducers.

To order please call SIGMA, or define the unit according to the guidline which follows.

"PART NUMBER GUIDELINE"

The following is an example of a typical part No.:

SCBB-1/2-2.25 describes the following unit:

· Sigma Contact

· BNC connector

· Broad band

· Element size 1/2 inch diameter

· Operating frequency 2.25 MHz

Each SIGMA Transducer is certified using the Sonix ProbeTEST™. A permanent record is maintained at SIGMA to verify comparison with probes manufactured at a later time. A copy of the certification is supplied to the customer at
NO ADDITIONAL COST.