SKIPPER 50/200 kHz Dual Transducers
SKIPPER 50/200 kHz Dual Transducers one of type ETS50200 Dual Transducer is designed only for ESN100 and ESN200 Echo Sounders. In one housing you have the ability to choose between 50 and 200 kHz. ESN100 and ESN200 is also designed to automatically change between the frequencies depending on the depth.
Dual Element Transducers
A dual element transducer consists of two crystal elements housed in the same casing, separated by an acoustic barrier. One crystal transmits sound energy whilst the other crystal receives any reflected sound energy.
SKIPPER 50/200 kHz Dual Transducers Display
Specification
| Product : | ETS50200 Dual Transducer |
| To be used with : |
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| Part Numbers : |
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| Range : | 300-700 m depending on frequency and water/bottom quality |
| Material : | Polyvinyl Chloride |
| Weight : | 5 kgs |
| Mounting options : |
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| Classification only with ESN100 or ESN200 : |
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Advantages:
- Improves near surface resolution
- Eliminates delay line multiples for high temperature applications
- Couples well on rough or curved surfaces
- Reduces direct back-scattering noise in coarse grained or scattering materials
- Combines penetration capabilities of a lower frequency single element transducer with the near surface resolution capabilities of a higher frequency single element transducer
- Can be contoured to conform to curved parts
Applications:
- Remaining wall thickness measurement
- Corrosion/erosion monitoring
- Weld overlay and cladding bond/disbond inspection
- Detection of porosity, inclusions, cracks, and laminations in castings and forgings
- Crack detection in bolts or other cylindrical objects
- Maximum temperature capability is 800°F (425°C) for 5.0 MHz and below; 350°F (175°C) for 7.5 MHz and 10 MHz. Recommended duty cycle for surface temperatures from 200°F (90°C) to 800°F (425°C) is ten seconds maximum contact followed by a minimum of one minute air cooling (does not apply to Miniature Tip Dual)
The frequency and transfer characteristics of dual-element ultrasonic transducers are theoretically and experimentally investigated in the long pulse radiation mode for the case where one of the piezoelectric elements is connected to a control circuit in the form of an inductance coil or a resistor. For the controlled damper and controlled layer cases, the characteristic features of radiation as functions of the control circuit parameters are determined, as well as the conditions for an increase in ultrasonic wave radiation power. With certain conditions being satisfied, we demonstrate the possibility of amplitude modulation of the emitted ultrasonic wave by periodic switching of control circuit elements
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Source: olympus-ims.com
