BC Biomedical USP-100A, User Manual

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INTRODUCTION
Measurement of power output levels of diagnostic and therapeutic ultrasound equipment has become
increasingly important to determine exact patient exposure levels in case a potential risk exists to the
patient. Since the Radiation Control for Health & Safety Act of 1968 and the 1976 Medical Device
Amendments to the FDA Act became effective, all manufacturers of diagnostic Doppler ultrasound
equipment are required to submit information regarding their maximum peak and average exposure level,
beam patterns, and other pertinent information. Hospitals are responsible for regularly scheduled testing
(every six months) of output power and safety to maintain their accreditation.
The Ultrasound Wattmeter, Model USP-100A, is designed to measure the ultrasound power output of
diagnostic or therapeutic transducers up to 30 watts. The principle of measurement is the radiant force
method. The USP-100A uses a positioning clamp to hold the transducer in de-gassed water above a
conical target. The ultrasonic energy passes through the water to reflect off the target and is then
absorbed by the rubber lining. The radiant power is directly proportional to the total downward force
(weight) on the target. This weight is then transferred through the target support assembly to the electro-
mechanical load cell inside the scale. The cell is in a computer-controlled feedback loop and produces a
digital readout in watts of power (custom units) or grams of force. The choice of units (grams or watts) is
selected by front panel pushbuttons. The USP-100A is supplied with a plug-in 120 VAC to 12VDC 400
mA adapter (using another adapter not rated the same may damage unit). The USP-100A has a display
resolution of ±200 milliwatts.
UNPACKING THE USP-100A
The power meter comes complete with all accessories in a sturdy carrying case. To make ultrasonic
measurements, the water tank requires only one pint of de-gassed distilled water. If de-gassed water is
not available, use distilled water, NOT tap water.
The following replacement parts can be ordered if necessary from BC Group :
REPLACEMENT PARTS
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Test Tank with Rubber
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Positioning Clamp Assembly
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Calibration Weight Standards
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120 VAC to 12 VDC 500 mA power adapter
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PDF of User Manual available online at
www.bcgroupintl.com
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Carrying Case