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MSP430FR6047: MSP430FR6047: Suitable max pipe size? & Max TOF?

Mr. Jadhav
Intellectual 580 points
Part Number: MSP430FR6047


Hello,

I would like to know some specific performance statistics.

1 - What is the maximum possible pipe size this Microcontroller is suitable for?

2 - What is the maximum TOF, DTOF it is possible to measure?

Regards,

Jadhav 

  • 0
    TI__Mastermind 44410 points
    Hello Jadhav,

    1. The maximum pipe size will depend on the spacing between transducers and configuration(in-line, reflective, clamp-on). The sensitivity of the transducers you use will also play a role in the maximum spacing. Generally, in-line transducers with a direct line of sight offers the highest signal strength, therefore maximum size. Do you have some idea of the pipe sizes you may need to support and what transducer configuration you will use?

    2. I do not know this answer immediately. I will respond tomorrow with the information.
  • 0 in reply to Eddie LaCost
    Intellectual 580 points
    Hello Eddie,

    1. Currently i am working on a prototype with a pipe diameter of 2.5 cm. but I am planning for some use this chip for industrial applications and then the pipe size may go max till 1 m+ in diameter (just an assumption).

    2. Ok!

    regards,
    Jadhav
  • 0 in reply to Mr. Jadhav
    TI__Mastermind 44410 points
    1. With 1MHz transducers, up to 1m(DN1000) is possible. At 2MHz, it is likely that the attenuation would be too high and would require some type of external amplification.
    2. The device really has no specific limitation in theory. For aTOF, you can refer to the USS Design center users guide in the configuration section which shows the min an max values. Gap between pulse start and ADC capture has a maximum value of 9ms, so this could be considered the software maximum value. In regards to DTOF, there is also no real limitation in theory, but realistically, we expect a few transducer cycles is possible. For example, 1 cycle of 1MHz transducer is 1uS. We have seen implementations that measure 3-4 cycles for very high flow rate applications, but we have not tested for very high flow rates in our lab.
  • 0 in reply to Eddie LaCost
    Intellectual 580 points
    2. what do you mean by 1 cycle is it the USS capture sequence?
  • 0 in reply to Mr. Jadhav
    TI__Mastermind 44410 points
    Cycle is referring to the excitation transducer frequency. For 1MHz, this is 1 / 1MHz = 1uS

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