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ULTRA SONIC
 
 
Digital Ultrasonic Pulse Echo System - Solid / Liquid - (VCT - 70A)
Digital Ultrasonic Pulse-Echo Velocity meter is a simple and unique direct reading digital system to determine the velocity of ultrasonic waves as well as to observe echoes for attenuation measurements with excellent accuracy.
(Liquid Cell)
Sample holder for solids.
(Longitudinal and shear waves)
This Model includes all the features  and descriptions in (VCT - 70)
 
 
 
Parameters that can be studied using  these Instruments
LIQUIDS
SOLIDS
ELASTIC PROPERTIES

PHYSICAL PROPERTIES

Microhardness

Fugacity

Debye’s temperature

Softening temperature

Attenuation Constant

Longitudinal modulus

Shear modulus

Bulk modulus

Young’s modulus

Poison’s ratio



Acoustic Impedance
Compressibility
Free Length, Free Volume
Molar Sound velocity
Internal Pressure
Attenuation studies
Relative association
Molecular association
Relaxation time
Gibb’s free energy
Enthalpy
 
Accessories
  • For liquids as given in model VCT-70.
  • One pair of longitudinal transducers and one pair of shear wave transducers (2 Mhz).
  • User friendly sample holder for solid samples.
  • One pair of BNC cables.

 
Optional
  • RS232 interface used to communicate data between the system  and an IBM PC.
  • Electronically controlled constant temperature water bath with pump(for liquid cell).
  • Electronic balance with required accuracy.  Additional facility to find  density of solid samples.
  • Viscosity Measurement setup.
  • CRO
Digital Ultrasonic Pulse Echo System - Solid / Liquid - (VCT - 70)
Digital Ultrasonic Pulse-Echo Velocity meter is a simple and unique direct reading digital system to determine the velocity of ultrasonic waves as well as to amplify echoes for attenuation measurements with excellent accuracy.
ACCESSORIES
  • One piezo electric transducer (2Mhz).
  • Liquid cell (10 to 15 ml capacity) with provision for various path lengths.
  • One coaxial BNC cable to connect transducer  to the system.
DESCRIPTIONS
  • Velocity measurement in Liquid is based on the pulse-echo method
  • An embeded microcontroller with its peripherals works as a standalone Data Acquisition system and control system.
  • A built-in high speed timer (clock frequency = 60 Mhz) is used to measure accurately the transit time of ultrasonic waves the resolution in transit time measurement is 0.016 micro seconds.
  • The transit time and  velocity of ultrasonic waves are digitally displayed.
 
Ultrasonic Interferometer - (TUIT - 100)
Ultrasonic Interferometer is a simple and easy to use unit for the accurate measurement of  Ultrasonic velocity in liquid systems at the desired temperature.
Special Features
  • Accuracy in wavelength measurement - 0.001 mm
  • Digital panel Meter(DPM)-For observing the change in the reading between nodes/anti-nodes(75mv approximately between a node and anti-node).
  • Only one liquid cell is required for all frequencies.
  • Built in IC regulated power supplies.
Accessories
  • Liquid cell (15 - 20 ml) - One(With Provision for water circulation)
  • Transducer (Longitudinal,2 MHz) - One
  • Micrometer assembly (With Tx  holder) - (One)
  • Users Guide



Optionals
  • CRO
  • Digital Micrometer assembly
  • Transducers with other  frequencies(1,3,5MHz)
  • Electronically controlled constant temperature water bath.




Parameters that can be studied (LIQUIDS):
  • Acoustic impendence, Compressibility,  Free length,Free volume
  • Molar sound velocity,  Internal pressure, Attenuation studies
  • Relative association , Molecular association,Relaxation time
  • Gibb’s free energy, Enthalpy
Unique Features
The crystal oscillator and the Pizo electric transducer are tuned to the exact frequency of operation to achieve 3 digit decimal accuracy