Analog or Digital, portable or desk top, our Ultrasound Power Meters offer a wide variety of accuracy and price. They make it easy to get the job done right.  

Ultrasound Wattmeter - Digital / Portable - 50 mW Resolution

USP-50SP
 

Ultrasound Wattmeter - Digital - 200 mW Resolution

USP-100SP
 

Ultrasound Wattmeter - Analog - 150 mW Resolution

USP-30

The most reliable and repeatable means of measuring ultrasound power is by the radiation force method. The transducer to be tested is centered above a 45° air-backed cone target in de-gassed water. The coupling is made to a precision balance capable of resolving ± 0.15 watts. When acoustic energy is applied to the cone, the resultant force is directly proportional to the total radiated power. The test tank is lined with sonic absorbent rubber to prevent acoustic reflection. The balance is programmed to convert milligram magnitude forces direct to a readout in watts with good resolution. Measurement accuracy of the power meter can be verified by placing a calibrated weight on the cone’s support arm.

Features for the USP-50SP:
• Resolution: 50mW (150 mW in grams mode)
• Measurement range: 0 to 30 Watts
• Frequency range: .5 to 10MHz
• Measures pulsed or continuous power
• Selectable readout in watts or grams
• Battery or line-powered
• Digital liquid crystal display
• Optional RS-232 or USB interface
• Automatic zeroing & stabilization
• Five point certification (NIST traceable)

Power Supply Information

BC20-21113

Power supply (Universal) for all UPM's except UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

BC20-21119

Power supply (Universal) for UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

 

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-100SP, 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-100SP 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 electromechanical 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-100SP 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-100SP has a display resolution of ±50 milliwatts.

Features-USP-100SP:

• Digital reading
• Resolution: 50 mW
• Continuous or pulsed power
• Integrated carrying case
• 0.2 to 30.0 Watt Range
• Accuracy = ±3% + one count reading
• 0.5 to 10MHz frequency response
• Built-in transducer holder
• Line power battery operation
• Unit weight is 11lbs

Power Supply Information

BC20-21113
Power supply (Universal) for all UPM's except UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

BC20-21119
Power supply (Universal) for UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

 

The Model USP-30 Ultrasound Power Meter is designed to measure the ultrasonic power output of diagnostic or therapeutic transducers up to 30 watts using the radiation force balance method.

The USP-30 consists of a precision mechanical balance that measures from 0.15 to 30 Watts, a conical target suspended on a triangular hanger, a water tank, a transducer support rod with clamp and a carrying case. The transducer to be tested is center-mounted over the conical target with the transducer's radiating area immersed facedown in the water medium.

The Model USP-30 Ultrasound Power Motor measures the average ultrasonic power by measuring the radiant force exerted by the transducer on the conical target. This target is coupled to the precision mechanical balance that is used to measure the gram-mechanical force due to the ultrasonic radiation. The gram force is directly proportional to the ultrasound power in watts when multiplied by a constant of 14.65. Therefore, a 2.05 gram force would be equal to 30 watts of ultrasound radiation. The heart of the USP-30 system is its air-filled conical target. The weight of this target is nulled to a minimum by using its own buoyancy. Incident ultrasound energy is mechanically transferred from the target to the precision balance where it is manually measured. Butyl rubber walls inside the water test tank absorb reflected ultrasound energy. This system provides a sturdy instrument with good measurement accuracy and low cost.


Ultrasound Power Meter - Digital - 1 mW Resolution

UPM-DT-1000PA
 

Ultrasound Power Meter - Digital - 2 mW Resolution

UPM-DT-1PA
 

Ultrasound Power Meter - Digital - 20 mW Resolution

UPM-DT-10PA

OHMIC Instruments Newest Model UPM-DT-1000PA provides the fastest response (under 3 seconds) and the highest resolution (0.001 watts) of any current UPM-DT. The UPM-DT series have been in use worldwide since 1986 and conform to the testing guidelines recommended by FDA, JCAHO, AAMI and AIUM. Power is measured by the radiation force balance method. The accuracy of the UPM-DT’s are traceable to NIST.

Features for the UPM-DT-1000PA:

• Fastest response time= less than 3 seconds
• Highest Resolution: 1mW OR .1 mg in grams mode
• Five point certification (NIST Traceable)
• Measurement Range: 0-30WATTS
• Frequency Range: .5TO 10MHZ
• Measures total pulsed or continuous power
• Automatic zeroing and stabilization
• Digital display and RS-232 Interface

 

OHMIC Instruments Models UPM-DT-1PA & 10PA are precision wattmeters designed to measure the power output of diagnostic and therapeutic ultrasound transducers. The UPM-DT series have been in use worldwide since 1986 and conform to the testing guidelines recommended by FDA, JCAHO, AAMI and AIUM. Power is measured by the radiation methodand the accuracy of the UPM-DT’s are traceable to NIST.

Features for the UPM-DT-1PA:

• Five point certification (NIST Traceable)
• High resolution: 2 OR 20mW (1.5 or 15 mW in grams mode)
• Measurement range: 0-30 watts
• Frequency range: .5-10 mhz
• Measures total pulsed or continuous power
• Automatic zeroing and stabilization
• Digital display and RS-232 interface
• Equipped with carrying case

 

OHMIC Instruments Models UPM-DT-1PA & 10PA are precision wattmeters designed to measure the power output of diagnostic and therapeutic ultrasound transducers. The UPM-DT series have been in use worldwide since 1986 and conform to the testing guidelines recommended by FDA, JCAHO, AAMI and AIUM. Power is measured by the radiation methodand the accuracy of the UPM-DT’s are traceable to NIST.

Features for the UPM-DT-10PA:

• Five point certification (NIST Traceable)
• High resolution: 2 or 20 mW (1.5 or 15 mW in grams mode)
• Measurement range: 0-30 watts
• Frequency range: .5 TO 10 mhz
• Measures total pulsed or continuous power
• Automatic zeroing and stabilization
• Digital display and RS-232 interface
• Equipped with carrying case


 Ultrasound Power Meter - Digital / Portable - 50 mW Resolution

UPM-DT-50SP
 

 Ultrasound Power Meter - Digital - 200 mW Resolution

UPM-DT-100SP
 

 Ultrasound Power Meter - Analog - 150 mW Resolution

UPM-30

The most reliable and repeatable means of measuring ultrasound power is by the radiation force method. The transducer to be tested is centered above a 45° air-backed cone target in de-gassed water. The coupling is made to a precision balance capable of resolving ± 0.15 watts. When acoustic energy is applied to the cone, the resultant force is directly proportional to the total radiated power. The test tank is lined with sonic absorbent rubber to prevent acoustic reflection. The balance is programmed to convert milligram magnitude forces direct to a readout in watts with good resolution. Measurement accuracy of the power meter can be verified by placing a calibrated weight on the cone’s support arm.

Features for the USP50SP:
• Resolution: 50mW (150 mW in grams mode)
• Measurement range: 0 to 30 Watts
• Frequency range: .5 to 10mHZ
• Measures pulsed or continuous power
• Selectable readout in watts or grams
• Battery or line-powered
• Digital liquid crystal display
• Optional RS-232 or USB interface
• Automatic zeroing & stabilization
• Five point certification (NIST traceable)

Power Supply Information

BC20-21113
Power supply (Universal) for all UPM's except UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

BC20-21119
Power supply (Universal) for UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

 

 The Model UPM-DT-100SP Ultrasound Power Meter was developed to test therapeutic transducers according to AIUM, JCAHO, FDA, and NIST guidelines. OHMIC’s ultrasound wattmeters have been used worldwide since 1977 and are the most widely accepted standard for documenting the power output of medical transducers. The performance of the UPM-DT-Series has been tested and verified to be within the limits of tolerance established by the Food & Drug Administration (FDA) and National Institute of Standards & Technology (NIST). The compact and light weight Model UPM-DT-100SP meets all the requirements of a portable test instrument with the reliability and proven performance of the UPM-DT-Series. The Model UPM-DT-100SP uses the identical test tank and target configuration as the higher resolution UPM-DT-1 and UPM- DT-10.

Features for the UPM-DT-100SP:
• Performance tested by FDA and NIST
• Five point certification (NIST traceable)
• Resolution: 50 mW
• Measurement range: 0-30 watts
• Frequency range: .5-10 mhz
• Measures total pulsed or continuous power
• Automatic zeroing and stabilization
• Selectable readout in watts or grams
• Battery or line-powered
• Digital display and RS-232 interface

Power Supply Information

BC20-21113
Power supply (Universal) for all UPM's except UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

BC20-21119
Power supply (Universal) for UPM-DT-50SP Rev B and UPM-100SP Rev B w/plugs for EUR, UK, AUS, USA

 

Ohmic’s Ultrasound Power Meter, Model UPM-30, is designed to measure the ultrasonic power output of diagnostic or therapeutic transducers up to 30 watts using the radiation force balance method. The UPM-30 consists of a precision mechanical balance which measures from 0.01 to 10.00 grams, a conical target suspended on a hanger, a water tank, a transducer support rod with clamp, and a carrying case. The transducer to be tested is center mounted over the conical target with the transducer’s radiating area immersed face down in the water medium.

Model UPM-30 determines the average ultrasonic power by measuring the radiant force exerted by the transducer on the conical target. This target is coupled to the precision mechanical balance which is used to measure the gram-mechanical force due to the ultrasonic radiation. The gram force is directly proportional to the ultrasound power in watts when multiplied by a constant of 14.65; therefore, a 2.05 gram force would be equal to 30 watts of ultrasound radiation.

The heart of the UPM-30 unit is its air-filled conical target. The weight of this target is nulled to a minimum by using its own buoyancy. Ultrasound energy is mechanically transferred from the target to the precision balance where it is measured. Reflected ultrasound energy is absorbed by closed-cell butyl rubber walls inside the water test tank. This system provides a sturdy instrument with good measurement accuracy and economical cost.


 UW7 Ultrasound Wattmeter

UW-7
 

Ultrasound Wattmeter - 1 or 3Mhz Only

 

UMR-3D
 

Accessories Available 


• Calibration Weight

• Multipurpose Holder/Positioners

• Cables

• Power Supplies

• Batter Eliminator

• Transducer holder and Clamp

• Interface Cable

• Pan and Pan Support

• Balance Beam

• Cone Assemblies

• Tank Assembly

 The UW-7 Digital Ultrasound Wattmeter provides quick and accurate verifying and calibrating readout of therapeutic ultrasound devices in the field or equipment service centers.

Features:
• Special temperature compensated load cell design
• 0.10 watt to 30 watt power measurement range
• Fast auto zeroing button
• Extremely fast 2 second readout stabilization
• Measures pulsed or continuous power
• 2.65" (6.7 cm) diameter sound head maximum
• High contrast back lit display
• Selectable readout in watts or grams
• 120 or 240 VAC 50-60 Hz standard
• 0.01 W resolution
• Accuracy = ±3% + one count reading
• Handy soft pack protective carrying case

 

 From UMA - The people who developed the original soft membrane/ water-coupled ultrasound wattmeter. Housed in a rugged metal case.


• 1 MHz & 3 MHz Response
• Built-In Transducer Holder
• Sealed Water Well
• +/- 3% Accuracy
• Digital Readout

 

 

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