DIGITAL ULTRASOUND WATTMETER USP-100A USER MANUAL
BC BIOMEDICAL USP-100A ULTRASOUND WATTMETER TABLE OF CONTENTS WARNINGS, CAUTIONS, NOTICES ............................................................................... ii INTRODUCTION ............................................................................................................. 1 TEST SETUP .................................................................................................................. 2 LAYOUT ...............................................................................
WARNING - USERS The USP-100A is for use by skilled technical personnel only. WARNING - USE The USP-100A is intended for testing only and should never be used in diagnostics, treatment or any other capacity where it would come in contact with a patient. CAUTION - MODIFICATIONS The USP-100A is intended for use within the published specifications. Any application beyond these specifications or any unauthorized user modifications may result in hazards or improper operation.
CAUTION - LIQUIDS Do not submerge or spill liquids on the USP-100A. Do not operate the USP-100A if internal components not intended for use with fluids may have been exposed to fluid, as the internal leakage may have caused corrosion and be a potential hazard. CAUTION - CLEANING Do not immerse. The USP-100A should be cleaned by wiping gently with a damp, lint-free cloth. A mild detergent can be used if desired.
NOTICE – DISCLAIMER BC GROUP INTERNATIONAL, INC. WILL NOT BE RESPONSIBLE FOR ANY INJURIES SUSTAINED DUE TO UNAUTHORIZED EQUIPMENT MODIFICATIONS OR APPLICATION OF EQUIPMENT OUTSIDE OF THE PUBLISHED INTENDED USE AND SPECIFICATIONS. NOTICE – DISCLAIMER BC GROUP INTERNATIONAL, INC. RESERVES THE RIGHT TO MAKE CHANGES TO ITS PRODUCTS OR SPECIFICATIONS AT ANY TIME, WITHOUT NOTICE, IN ORDER TO IMPROVE THE DESIGN OR PERFORMANCE AND TO SUPPLY THE BEST POSSIBLE PRODUCT.
INTRODUCTION 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 degassed 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.
TEST SETUP Water as a Measurement Medium* The measurements are to be performed in water because ultrasound propagation in water closely approximates that in tissues. The ultrasonic attenuation in water can be taken as a lower limit on the attenuation that will be encountered in the body. Large areas in the body can consist of low attenuating material such as urine and amniotic fluid.
recommended to use an ambient testing temperature of 24.0 ±3.0 °C (75.2 ±5.4 °F). Sonic energy agitates the water surface through heating and scattering. The time duration of each test should be limited to a few minutes. Prolonged testing, particularly at higher power levels, will show visible signs of air bubbles on the transducer, target, and the absorbing rubber surface.
LAYOUT 5 6 7 1 4 2 3 1. On/Zero - Off - Yes button: Press to turn unit on or zero, press and hold until OFF is displayed then release to turn off. 2. Unit - No button: Press and hold then release when unit desired is displayed. 3. Function - Mode - Back button 4. Tare - Menu/Cal - Exit button: Press to tare. 5. 7-Segment display: Displays readings. A “g” after the reading indicates grams. 6. Stability Indicator: Displays once the scale is stabilized and ready to take a measurement. 7.
TESTING 1. Remove the top of the carrying case by unlatching the clamps located on two ends. The USP-100A is mounted on the base of the carrying case. 2. Place the USP-100A on a stable and level surface. Avoid air currents and mechanical vibrations. Level the unit. 3. Loosen the transducer positioning clamp and move it out of the way, remove the cone target from the clips where it is normally stored. Place the tank on the rubber circle. 4. Fill the test tank to ¼ inch (6.
8. Allow 5 minutes for the scale to stabilize. With no ultrasonic power applied to the transducer, press the On/Zero button to zero the unit. 9. Check response by placing the 1 gram weight on the arm of the cone target (the flat part that is out of the water). The USP-100A should read 1.00 ±0.10 grams. Change the units to the watts mode by pressing and holding the Unit button until “CUSTOM” is displayed then release. The USP-100A should read 14.6 ±0.2 Watts. 10. Remove the 1 gram weight. 11.
MAINTENANCE Verification of Proper Scale Functioning Small variations of water surface motion, air currents, or mechanical movements may cause uncertainties in power measurements. To test scale accuracy at low levels, set up the scale as in the Operating Procedure section. Place the 1 gram weight on the flat surface of the target arm. Read meter three times; readings should be within ± 0.2 counts (for example, 14.4 to 14.8).
CALIBRATION A 1 gram weight is supplied to check the calibration and programming. With the DUT turned off, zero the unit. Place the weight on the arm of the cone target. Within 3 seconds the unit should read 14.6 ±0.2 Watts or 1.00 ±0.01 grams. If this reading is not accurate, the USP-100A needs to be calibrated by BC Group. It is recommended that the USP-100A be returned to BC Group on a routine yearly basis for calibration and certification.
MANUAL REVISIONS Revision # Rev 01 Rev 02 Rev 03 Rev 04 Rev 05 Revisions Made Origination Misc. Edits Misc. Edits, Format Updated Misc. Edits, Format Updated, Specifications Updated Specifications Updated LIMITED WARRANTY WARRANTY: BC GROUP INTERNATIONAL, INC. WARRANTS ITS NEW PRODUCTS TO BE FREE FROM DEFECTS IN MATERIALS AND WORKMANSHIP UNDER THE SERVICE FOR WHICH THEY ARE INTENDED. THIS WARRANTY IS EFFECTIVE FOR TWELVE MONTHS FROM THE DATE OF SHIPMENT.
SPECIFICATIONS ULTRASONIC POWER MEASUREMENT POWER RANGE RESOLUTION MINIMUM DETECTABLE POWER LEVEL ACCURACY DIGITAL FILTER DUT OPERATING FREQUENCY DUT MAXIMUM TRANSDUCER SIZE TEST MEDIUM 0 to 30 W ± 200 mW or ± 0.01 g (150 mW) 200 mW ±3% @ 10 W, 25 °C (77 °F) 2.5 seconds Integration 0.5 to 10 MHz 3.00 Inches (76.2 mm) Degassed Water @ 24.0 ±3.0 °C (75.2 ±5.
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