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Bowles UW-7 User Manual

Ultrasound wattmeter
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Bowles Corporation
UW-7
Ultrasound Wattmeter
User Manual
Rev – 04/27/18

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  • Page 1 Bowles Corporation UW-7 Ultrasound Wattmeter User Manual Rev – 04/27/18...
  • Page 2 Bowles Corporation UW 7 Manual P/N 3009 Bowles Corporation 445 Long Point Road, N. Ferrisburgh, VT 05473 www.BowlesCorp.com 802-425-3447...

  • Page 3: Table Of Contents

    ....................10 UMMARY OF EATURES ................11 LTRASOUND AND PPLICATIONS ..........12 ATIENT REATMENT WITH HERAPEUTIC LTRASOUND CHAPTER 2: DESCRIPTION ....................13 UW-7 S ....................14 PECIFICATIONS ....................15 VERALL AYOUT ..................16 RONT ANEL ESCRIPTION ................... 17 ANEL ESCRIPTION ..................
  • Page 4 Bowles Corporation UW 7 Bowles Corporation 445 Long Point Road, N. Ferrisburgh, VT 05473 www.BowlesCorp.com 802-425-3447...

  • Page 5: Warranty

    Bowles Corporation (Bowles) warrants the UW-7 against defects in materials and workmanship for one year from the date of original purchase. The standard warranty is extended for a second year if the instrument is returned to Bowles for its recommended yearly recalibration. Recalibration is not covered under the warranty.

  • Page 6: Notices

    UW 7 Notices Copyright Copyright © 2018 by Bowles Corporation. All rights reserved. No part of this publication may be reproduced or transmitted in any form other than for the purchaser’s personal use without written permission from Bowles Corporation. Certification This instrument was thoroughly tested and inspected.
  • Page 7 All items being returned (including all warranty-claim shipments) must be sent freight- prepaid to our factory location. When you return an instrument to Bowles, we recommend using United Parcel Service, Federal Express, or Air Parcel Post. We also recommend that you insure your shipment for its actual replacement cost.

  • Page 8: Safety Considerations

    Use of this instrument is restricted to qualified personnel who recognize shock hazards and are familiar with safety precautions used when operating electrical equipment. Read the manual carefully before operating the UW-7. The following warning symbols may be found on the UW-7: Symbol Description...

  • Page 9: Hazard Warnings

    Bowles Corporation UW 7 Hazard Warnings Warning! Power Rating. The UW-7’s main power input must be connected to an external power transformer that provides voltage and current within the specified rating for the system. Use of an incompatible power transformer may produce electrical shock and fire hazards.

  • Page 10: Electromagnetic Interference And Susceptibility

    Bowles Corporation UW 7 Electromagnetic Interference and Susceptibility USA FCC CLASS A Warning: Changes or modifications to this unit not expressly approved by the manufacturer could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.

  • Page 11: Ec Directive 73/23/Eec Low Voltage (User Safety)

    Bowles Corporation UW 7 EC Directive 73/23/EEC Low Voltage (User Safety) The system has been type tested by an independent testing laboratory and found to meet the requirements of EC Directive 73/23/EEC for Low Voltage. Verification of compliance was conducted to the limits and methods of the following EN 61010-1 “Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory...
  • Page 12 Bowles Corporation UW 7...

  • Page 13: Chapter 1: General Information

    Bowles Corporation UW 7 Chapter 1: General Information Inside This Chapter  Summary of Features  Ultrasound and its Applications  Patient Treatment with Therapeutic Ultrasound...

  • Page 14: Summary Of Features

    Bowles Corporation UW 7 Summary of Features The UW-7 digital Ultrasound Wattmeter provides an accurate means of verifying and calibrating the output of therapeutic ultrasound devices. The instrument measures output through a strain gauge bridge transducer. The UW-7:  Has a resolution of 0.01 Watt and a repeatability of -3% of readings ...

  • Page 15: Ultrasound And Its Applications

    Bowles Corporation UW 7  Ultrasound and Its Applications Human perception of sound waves is limited to frequencies of fewer than 20,000 vibrations per second. Higher frequency vibrations — between 0.7 and 3.3 MHz — are used for ultrasound therapy. (Most ultrasound equipment produces an output of between 1 and 3.3 MHz.)

  • Page 16: Patient Treatment With Therapeutic Ultrasound

    The most essential assurance that the clinician can have is the verification that the ultrasound unit is producing the ultrasound energy for which it was designed. The Bowles UW-7 digital power meter enables the clinician to accurately measure this output energy.

  • Page 17: Chapter 2: Description

    Bowles Corporation UW 7 Chapter 2: Description Inside This Chapter  Specifications  Overall Unit Layout  Front Panel Description  Back Panel Description  Standard Accessories  Optional Accessories...

  • Page 18: Uw-7 Specifications

    Bowles Corporation UW 7 UW-7 Specifications  Measurement range 0.01 - 30 Watts  Input Power Level 0 - 30 W  Input Frequency 0.5 - 10 MHz  Resolution 0.01 W  Accuracy, electrical +/- .15 W (+/-.01 grams) throughout range ...

  • Page 19: Overall Unit Layout

    Leveling Bubble Figure 2-1: UW 6 General Layout The top of the UW-7 Ultrasound wattmeter is shown in Figure 2-1. It includes the following components.  Front Panel: Includes LCD readout and keyboard.  Rear Panel: Includes Battery compartment, RS-232 Connector and Power Transformer Jack.

  • Page 20: Front Panel Description

    UW 7 Front Panel Description Figure 2-2: UW-7 Front Panel Layout The front panel of the UW-7 ultrasound wattmeter is shown in Figure 2-2. It includes the following components:  LCD Display: Indicates the meter reading in watts or grams.

  • Page 21: Back Panel Description

    Bowles Corporation UW 7 Back Panel Description The back panel of the UW-7 is shown in Figure 2-3. It includes the following components:  Wall Transformer Jack: When using the wall-mounted transformer, simply plug into a receptacle. Figure 2-3: Clamp Support...

  • Page 22: Bottom Panel Description

    Bowles Corporation UW 7 Bottom Panel Description The bottom panel of the UW-7 is shown in Figure 2-4. It includes the following components:  Leveling Jacks: There are three support legs located on the bottom panel, two of which are threaded to be able to act as leveling jacks for the height adjustment to level the unit.
  • Page 23 UW 7  Shipping Container: This corrugated box contains specifically designed foam inserts to ensure safe shipment of the UW-7 Wattmeter. Please save both the box and the foam inserts for future shipment of the unit for service or calibration.

  • Page 24: Optional Accessories

    Dissolved oxygen test kits are available at Chemetrics (800-350-3072) Kit- P/N K-7512; Refills- P/N R-7512.  RS-232 to USB Cable: Used for connecting the unit to a computer or a serial printer. Call Bowles for ordering information: 802-425-3447.  AC Transformer Unit: Output:...

  • Page 25: Chapter 3: Installation & The Operating Environment

    UW 7 Chapter 3: Installation & the Operating Environment Inside This Chapter  Unpacking and Inspection  Operation  UW-7 Systems Check  Beginning Ultrasound Power Measurements  Using the Universal Transducer Clamp Assembly and Centering Rings  Ultrasound Unit Testing...

  • Page 26: Unpacking And Inspection

    UW-7 to Bowles for recalibration or future service. (Refer to Chapter 4 for shipping instructions.) If there is no shipping damage, continue removing the carrying case, with the UW-7 in it, from the shipping case. Then check the carrying case for the following accessories that are shipped with every UW-7: ...
  • Page 27 Bowles Corporation UW 7  Cone Hanger  Clamp Support Post  Clamp  Clamp Tie Hook  100 Gram Cal Check Weight  Calibration Weight Adapter Pedestal  Centering Rings (3)  Syringe  Universal Power Transformer...
  • Page 28 Bowles Corporation UW 7  Country specific AC Plug Adapter (1) You will receive the one adapter specified for your country.  Carrying Case  15 Vdc Lithium ion battery pack. (OPTIONAL)

  • Page 29: Operation

    Operating Environment The UW-7 must be allowed to adjust to room temperature before the unit can be operated. The relative humidity in the room should not exceed 90%. Refer to Chapter 4 for additional information on safety, storage and shipping requirements for the UW-7.
  • Page 30 45 minutes. Exposure to air makes this water lose its excellent coupling property; therefore, the bottles should not be opened until tests with the UW-7 are ready to begin. Be sure to allow water to come to room temperature before use.

  • Page 31: Uw-7 Systems Check

    Transformer Unit Power Jack 4. Allow sufficient time for the UW-7 to fully adjust to room temperature. If the unit is not at room temperature, the transducer will be slowly warming or cooling and will cause the readings to shift.
  • Page 32 8. Fill the tank with 600 ml  50 ml of fresh distilled and degassed water. Do not spill water on the panel of the UW-7. Fill until the water reaches slightly above the bottom lip of the well, as shown below.

  • Page 33: Beginning Ultrasound Power Measurements

    45 minutes to 1 hour. 2. Turn on the UW-7 using the ON switch on the front panel. Ensure that the unit is in the Watts mode (displayed units will read 0 in the right hand side). Allow five...
  • Page 34 4. Turn on the ultrasound unit following the manufacturer’s instructions. Adjust it to the desired level. Never exceed 30 watts. 5. Read the actual output power in WATTS on the LCD of the UW-7. 6. After all of the readings are completed, shut off the ultrasound unit.

  • Page 35: Using The Universal Transducer Clamp Assembly And Centering Rings

    Bowles Corporation UW 7 Using the Universal Transducer Clamp Assembly and Centering Rings The universal transducer clamp assembly frees the operator from holding the transducer treatment (radiating) head in the coupling water and prevents transducer movement, ensuring more accurate and stable readings. The centering rings help to properly center and aim the transducer head in the tank.
  • Page 36 Bowles Corporation UW 7 Figure A Figure B Clamp orientation Clamp orientation transducer with transducer without handle handle or Centering ring 5. Open the clamp by turning the clamp thumbscrews counterclockwise to fit the desired transducer head or handle. 6. Tighten the clamp screw to effectively grab the transducer head or handle.

  • Page 37: Ultrasound Unit Testing

    +/- 0.4 Testing Using Discrete Values (Method I) 1. Follow the procedures in this section on operating the UW-7. Review the Precautions found on page 5. 2. Set the Ultrasound Unit on discrete values such as 5, 10, 15 or 20.

  • Page 38: Using The Rs232 Port

    UW 7 Using the RS232 Port The UW-7 is equipped with a custom 22-pin female RS-232 port located at the rear of the instrument. A serial printer or a computer may be connected to the UW 7 via this port. Printing with the UW-7 means that the LCD contents are sent to the printer whenever the Print key on the UW-7’s front panel is pressed.

  • Page 39: Chapter 4: Safety, Maintenance, Storage & Shipping

    UW 7 Chapter 4: Safety, Maintenance, Storage & Shipping Inside This Chapter  Recommended Procedures and Precautions  Calibration Check Procedures  Maintenance  Service  Returning the UW-7 for Calibration  Battery Module Replacement  Storage  Repackaging and Shipping...

  • Page 40: Recommended Procedures And Precautions

     Do not apply more than 30 W of input power to the UW-7.  Do not operate the UW-7 for more than 45 minutes to 1 hour before changing the water (see Preparing the Distilled and Degassed Water on page 26).

  • Page 41: Maintenance

    Service The mechanical assembly of the UW-7 contains no parts that can be serviced by the user. The unit should be returned to Bowles Corporation for repair or calibration.

  • Page 42: Returning The Uw-7 For Recalibration

    When Bowles performs an annual calibration on a UW-7, we start with a weight check, using annually certified weights with ten times the accuracy of the check weight provided with the unit.

  • Page 43: Storage

    UW 7 Storage The UW-7 must be stored in an upright position on a flat surface that is relatively free of vibration. The unit should be stored in the carrying bag supplied with the unit. The storage environment should be free of dust and other foreign particles.
  • Page 44 Carrying Case storage ring Figures 4-2-3&4  Place the gray foam insert around the UW-7 unit in the carrying bag as shown in Figure 4-2.  Zip the canvas bag cover closed.  Pack the UW-7 in its original customized packaging material and shipping box.
  • Page 45 UW 7 Proper placement of the foam inserts when re-using the original packaging Before the UW-7 is returned to Bowles, make sure you have addressed each item in the following checklist:  Obtain a Return Authorization Number and Form from Bowles Customer Service (802-425-3447).
  • Page 46 Bowles Corporation UW 7...

  • Page 47: Appendix A: Troubleshooting Guide

    Bowles Corporation UW 7 Appendix A: Troubleshooting Guide...
  • Page 48  Liquids or other materials spilled onto the electronics. Communication failures between the UW-7 and a printer or a PC are usually caused by the serial cable or incorrect parameter settings. Troubleshoot as follows: 1. Verify that the correct serial cable is being used. The correct cable is Bowles PN: 1200- B-232 or equivalent 22-pin “straight-through”...
  • Page 49 If the battery fails to hold up for approx.36 hours’ operation, this indicates a problem with the electronics. Return the unit to Bowles, for factory service. Remember, when on battery power, the unit will run until it is powered down.
  • Page 50 Bowles Corporation UW 7...

  • Page 51: Return Materials Authorization Form

    This policy refers to any products or parts being returned to Bowles Corp whether customer owned, leased, or rented; whether under warranty or not. NO products or parts should be shipped to Bowles Corp. without first contacting us for a Return Materials Authorization Number (RMA) which should then be clearly displayed on the exterior of the package.

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