User Manual Ultrasound Calibration Balance
Contents
1. 5 05 Support Arm Assembly B110 2 03 Stand Bracket B110 5 02 Target assembly C199 Clamp general purpose C200 Clamp boss C201 Clip 5 133 Carrying case Precision Ultrasound Balance Usage e eee eee e n E i e i i n e ine E Spini 152. D BALANCE is now ready for use Precision Ultrasound Balance Controls and Markings Refer to figure 1 Assembled Balance Display The liquid crystal display gives a direct reading of ultrasonic power in Watts On Off Button To turn the balance on press the On Off button Pressing either of the Tare buttons will zero the display To turn the balance off press and hold down the On Off button Enter Button When first turned on the balance will default to show grams The Enter button will switch the display to the customised output Watts Select Button This button MUST ONLY be used to toggle between grams and watts AFTER the Enter button has been pressed Incorrect use will allow access to and possible corruption of conversion factors The EMS serial number of the balance and month year of manufacture is shown on the label attached at the side of the balance Precision Ultrasound Balance 11 Operating Instructions 1 Having assembled the balance and connected the mains adaptor to a suitable supply switch on the balance The balance executes a short self test routine then displays zero 0 000 g Press Enter to select the customised display watts DO NOT press Select see previous page Position the ultrasound transducer being tested so that the active face of the transducer is just below the surface of the water and so that the sound emitted from the device will hit the centre of the target cone Th
3. EMS Physio Ltd Grove Technology Park Downsview Road Wantage Oxfordshire OX12 9FE England User Manual PRECISION ULTRASOUND BALANCE Model 110 Declaration of Conformity NOTICE This equipment has been tested and found to comply with the limits class A digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause interference to radio communications Operation of this equipment in a residential area may cause unacceptable interference to radio and TV reception requiring the operator to take whatever steps are necessary to correct the interference at his own expense Precision Ultrasound Balance General Information This manual provides the necessary information for the installation and operation of the Precision Ultrasound Balance These instructions must be studied before putting the unit into operation The information contained in this manual is subject to change without notice No part of this manual may be photocopied reproduced or translated into another language without the prior written consent of EMS Physio Ltd Record of Amendments ISSUE COMMENTS DATE 3 Revised 10 04 2007 4 Revised 19 10 2011 Precision Ultrasound Ba
4. Ultrasound Balance is returned to EMS for calibration Calibration of the Ultrasound Balance requires specialised test equipment and the balance must be returned to EMS Physio Ltd Precision Ultrasound Balance 13 Troubleshooting Symptom 1 No display 2 Display HIGH 3 The power reading changes constantly 4 The weight reading is obviously wrong Probable Cause Power adaptor not connected Overweight indication Unstable ambient conditions excessive vibration or draft or a foreign object is caught between in the weighing pan frame Balance not tared before measuring Remed Connect power adaptor Check target frame is not obstructed or damaged and container is full of water Set up the balance in another area Remove the foreign object Tare the balance Precision Ultrasound Balance Parts List Part Number Description 24 96 Sartorious M Pact Pre 33 31 Screw M4x10mm 33 33B Screw M4x12mm BUTT B67 3 09 Water Container A67 2 08 Support Stem A67 2 10 Support Arm A67 3 01 Support Peg A67 2 12 10 Watt Test Weight A67 3 02 Absorbing Rubber Side A67 3 03 Absorbing Rubber Base A67 3 04 Centralizing Plate 1032 large head A67 3 05 Centralizing Plate 1030 head A67 3 06 Centralizing Plate 1032 small head A67 3 08 Centralizing Plate ML9120 A110 2 02 Mounting Block A110 3 01 Centralizing Plate Primo SoLo large head A110 4 01 Front and Rear Labels L10 label EMS Physio A110
5. e transducer may be held in place using a centralising plate and quick release attachment if it is an EMS device otherwise use the universal clamp supplied Make sure that there are no air bubbles trapped beneath the transducer Zero the balance by pressing one of the Tare buttons The balance should be re zeroed before each measurement Turn on the ultrasound output and wait for the output power display in watts to give a steady reading Make sure that no air bubbles form beneath the face of the transducer during use and that the transducer or its cable do not obstruct the frame which supports the target cone Precision Ultrasound Balance Maintenance The Electronic Balance may be cleaned by wiping over with a clean damp cloth The use of abrasive materials and cleaning solvents should be avoided Inspect the mains adaptor periodically for signs of damage especially cable insulation The water used in the container must be changed at least weekly Periodically remove the rubber absorbers from the container and clean them using warm soapy water Rinse thoroughly after cleaning The calibration of the Ultrasound Balance may be checked periodically using the 10 W weight provided with the balance Zero the balance Place the 10 W weight on the target frame assembly beneath the surface of the water Check that the Balance reads 10 W 0 5 W If the reading is not within the above range it is recommended that the
6. he balance scalefactor has been programmed assuming the temperature of the de gassed water is 23 C Readings will be approximately 2 low if the actual water temperature is 13 C and 2 high for 33 C The EMS Precision Ultrasound balance is supplied in a carrying case Precision Ultrasound Balance Unpacking Upon receipt of the unit check for any damage which may have occurred in transit If any signs of damage are found then retain all packing material and inform the carrier and the Company or its agent from whom the unit was purchased Each unit is supplied with a low voltage adaptor and cable The adaptor cable and unit all conform to international safety standards Check that the mains voltage and frequency indicated on the mains adaptor are as required If the mains supply is NOT within the specified range DO NOT CONNECT THE MAINS ADAPTOR TO YOUR SUPPLY 8 Precision Ultrasound Balance Assembly Support stem Centralizing Plate Various Support Arm Assembly Container Level Indicator Electronic Balance Display Tare Zero Button x2 ON OFF Select Button Enter Button Button Figure 1 Assembled Balance Precision Ultrasound Balance 9 Assembly Refer to figure 1 Assembled Balance 1 2 3 Withdraw the balance from the carrying case and place on flat and level surface Assemble the stand by screwing the support stem into the mounting block on the corner of the stand Level
7. lance 3 Contents Page Title 1 Declaration of Conformity 2 General Information 3 Record of Amendments 3 Contents 4 Warranty 5 Introduction 6 Technical Specifications 7 Unpacking 8 Assembled Balance Schematic Fig 1 9 Assembly 10 Controls and Markings 11 Operating Instructions 12 Maintenance 13 Troubleshooting 14 Parts List 15 4 Precision Ultrasound Balance Warranty This EMS Physio Ltd hereinafter called the company product is warranted against defects in materials and workmanship for a period of two years from the date of shipment The Company will at its option repair or replace components which prove to be defective during the warranty period provided that the repairs or replacements are carried out by the Company or its approved agents The Company will consider itself responsible for the effects on safety reliability and performance of the product only if assembly operations re adjustments modifications or repairs are carried out by persons authorised by it only if the product is used in accordance with the instructions for use only if the electrical installation of the relevant room complies with the appropriate national requirements Should the product be returned to the Company for repair it must be sent carriage paid Precision Ultrasound Balance 5 Introduction The EMS Precision Ultrasound Balance has been developed in response to the increasing demand for equipment capable of testing and ca
8. librating ultrasound therapy units The balance is based on the principle of measuring the radiation force produced on a suitable target by an ultrasound transducer The force is measured using a precision digital electronic balance programmed for direct read out in watts The unit is portable with carrying case Due to the fact that the unit is factory set if any problems arise with the unit it is highly recommended that the unit is returned for service and re calibration Environmental Considerations For best results the Precision Ultrasound Balance should only be used in an environment free from excessive air currents or vibration Do NOT install the balance near open windows or doors causing draughts or rapid temperature fluctuations near heating or air conditioning vents near vibrating or rotating machinery or on an uneven surface 6 Precision Ultrasound Balance Technical Specification Accuracy Scale factor 10 Resolution 0 02 watts Linearity lt 0 1 watts Stability short term lt 0 1 watts 10 minutes Zero Drift after warm up lt 0 1 watts hour Warm up Time lt 10 minutes Full Scale 30 watts Size 222 x 300 x 330 mm Weight 4 0 kg complete Water Capacity 1 litre Recommended Frequency Range 0 8 to 3 5 MHz Mains adaptor Power input AC 100 mA 240V Power output AC 500 mA 12V Other mains adaptors are available on request An optional battery pack is available All the above are typical at 23 C T
9. the balance using the adjustable feet and check with the built in level indicator Carefully withdraw the target and container assembly from the carrying case Place the container on top of the stand taking care to ensure that the weighbridge spindle is engaged on top of the loadcell and that the container is central between the location pegs of the stand Select a suitable workpiece clamp and fit to the stand support stem the unit is supplied with quick release clamps for use with EMS heads and an adjustable clamp for use with other styles and sizes of heads The target container can now be filled with suitably degassed water To degas the water it should be boiled and left to cool in a suitable covered container see IEC 150 Sodium Sulphide at a ratio of 4g litre may be added to help degassing the water if required Once the container has been filled with degassed water a suitable centralising plate may be fitted There are five sizes of plates for use with various EMS heads If the source being tested cannot be used with a suitable centralising plate then ensure that the source is central to the target otherwise inaccurate readings may be obtained Before use the target frame should be checked to see that it is not in contact with the head centralising plate Connect the output lead from the mains adaptor to the socket on the rear of the balance Connect the mains adaptor to a suitable mains outlet The PRECISION ULTRASOUN
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