NOTES ..................................CALIBRATION INTERVAL To ensure the accuracy of the UPM-DT-xPA Series, Ohmic Instruments recommends that it be calibrated at least once every 12 months. Calibration must be done by qualified personnel. Contact Ohmic Instruments for calibration. WARNING - USERS The UPM-DT-xPA Series is for use by skilled technical personnel only.
WARNING - USE The UPM-DT-xPA Series 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 UPM-DT-xPA Series is intended for use within the published specifications.
CAUTION - LIQUIDS Do not submerge or spill liquids on the UPM-DT-xPA Series. Do not operate the UPM-DT-xPA Series 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.
NOTICE – DISCLAIMER OHMIC INSTRUMENTS 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 OHMIC INSTRUMENTS RESERVES THE RIGHT TO MAKE...
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INTRODUCTION The Model UPM-DT-xPA Series Ultrasound Power Meter is designed to measure the ultrasonic power output of therapeutic transducers up to 30 Watts. The principle of measurement is the radiant force method. The UPM-DT-xPA Series 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 Ultrasound propagation in water closely approximates ultrasound propagation in tissue. Large areas in the body can consist of low attenuating material such as urine and amniotic fluid. Other areas of the body, such as the liver, contain higher attenuating materials. Water is used as a lower limit of the attenuation encountered in the body.
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Conical Target Installation Tilt the test tank and begin filling with degassed water creating a minimal amount of turbulence. Fill the tank 1/4” from the top with fresh degassed water. Disengage the meter’s slide lock (if equipped; see Meter Layout section). Power on the UPM-DT-xPA and allow the meter to zero.
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Target Support Stem of Conical Target Assembly Target Support Tube UPM-DT-xPA Series Test Tank Figure 2. Conical Target Installation...
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Transducer Placement To place the transducer, tighten the positioning clamp jaws onto the transducer handle; See Figure 3 for Positioning Clamp details. Loosen the two positioning clamp knuckles and insert the transducer head into the degassed water at an angle to minimize disruption of the degassed water.
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Conical Target Assembly Installed Transducer Head Submerged Transducer Handle and Positioned Directly Over Firmly Clamped in the Conical Target. Position. Figure 4. Transducer Placement Details...
METER LAYOUT Front 1. Power – Zero Button: - Press to power on the UPM-DT-xPA and/or to zero the reading. - Press and hold until OFF is displayed then release to power off the UPM-DT-xPA. 2. Print – Unit Button: - Press to print data via the RS232 port (see the Printing and Communications section).
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5. 7 Segment Display: - Displays measurement. 6. Selected Unit: - Displays the selected unit, grams (“g”) or Watts (“W”). 7. Stability Indicators: - These icons display once the measurement has stabilized. Back 1. Power Input Receptacle: - 12 VDC, 500 mA. 2.
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3. RS232 Interface: - Female DB9 Connector - Standard RS232 Configuration 4. USB Interface: - Female USB Type B connector...
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TESTING 1. Place the UPM-DT-xPA Series on a stable and level surface. Avoid air currents and vibrations. 2. Review and complete all steps outlined in the Test Setup section. a. Degas Water b. Fill the UPM-DT-xPA tank c. Install the Conical Target d.
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PRINTING AND COMMUNICATIONS RS232 Print Details RS232 Print Interface: Baud Rate = 9600, 8 Bit Data, No Parity Print Output Format: “0.0000 g” (grams mode) or “0.000 W” (custom Watts mode) measurement is displayed as the last line of the printout. An unstable measurement is indicated by a “?”...
Load Removed During Replace load or transducer and Err 8.4 Measurement repeat the test. Busy (tare, zero, printing, ------ Wait until operation completes waiting for a stable weight) If any error persists, contact Ohmic Instruments Sales or Service for repair...
Rev 01 Origination LIMITED WARRANTY WARRANTY: OHMIC INSTRUMENTS 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.
ULTRASONIC POWER MEASUREMENT POWER RANGE 0 to 30 W Model Grams Watts UPM-DT-10PA 1 mg 20 mW RESOLUTION UPM-DT-1PA 0.1 mg 2 mW UPM-DT-1000PA 0.1 mg 1 mW ACCURACY ±3% + One Count Reading DUT OPERATING 0.5 to 10 MHz...