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Since 1977, ultrasound power meters have been used worldwide. They have always been a widely accepted standard for documenting the power output of medical transducers.
The USP-50SP Ultrasound Power Meter was developed to test therapeutic and diagnostic transducers according to AIUM, JCAHO, FDA and NIST guidelines.
The compact and light weight USP50SP meets all the requirements of a portable test instrument with reliability and proven performance.
The USP-50SP uses a 5” diameter, 3 1/2” high test tank. To measure ultrasound power, the USP-50SP uses the reliable radiation force method.
Start by centering the transducer above the 45° airbacked cone target in degassed water. The coupling is made to a precision balance capable of resolving ±0.15 watts.
When acoustic energy is applied to the cone, the resultant force is directly proportional to the total radiated power.
The test tank is lined with sonic absorbent rubber to prevent acoustic reflection.
The balance is programmed to convert milligram magnitude forces direct to a readout in watts with good resolution.
Measurement accuracy of the power meter can be verified by placing a calibrated weight on the cone’s support arm. (The supplied 1 gram calibration weight
equals 14.7 watts.)
