PGA460-Q1: Transsducers for long range measurement

Chethan,

Considering the AU5550 is a closed top 40kHz transducer, it may be difficult to double the detectable distance with an alternative closed top transducer. At what voltage are you currently exciting the transducer (Vpp)?

If you need to use a closed top transducer, I can only recommend that you further focus the forward facing energy, this can be done by selecting a transducer such as the Prowave 400EP250, which is designed exclusively for forward facing applications (minimal side lobe reflections), or add a horn/waveguide to your existing transducer (see FAQ #4.4.9 at www.ti.com/.../slaa733.pdf ) to mechanically improve your front facing range.

If you are not limited to using a closed top transducer for sensor protection purposes from harsh environmental conditions, then you will have more success extending your long range with an open top transducer.

Please refer to the transducer/transformer listing at e2e.ti.com/.../620399 , and select a transducer based on your supported voltage, beam angle requirement, and casing size if frequency is not of importance. Note, a low frequency transducer typically enables a farther the reach. 40kHz is a feasible option for long range measurements, so filter your choice to <=40kHz.

Once you have selected some alternative transducer part numbers, I can review your selection, I provide my recommendation based on your system requirements. Please clarify the following system requirements for an improved recommendation:
1) Target type (size, shape, material)
2) Power supply (voltage and maximum current output)
3) Transformer or bridge drive part numbers
4) Do you need to detect the target at an angle? If so, how much of an angle?

Thank you Akeem for your reply.....

I am using single transducer with PGA460 and not two transducers