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Original question:

EVM430-FR6047: EVM430-FR6047 clamp-on transducers without amplifiers

EVM430-FR6047: Calibrating 1 Mhz Jiakang Transducers to work with metal pipes

Darshveer Singh
Prodigy 20 points
Part Number: EVM430-FR6047
Other Parts Discussed in Thread: TIDA-01486

Hello,

I am currently using the EVM430-FR6047 along with 1 MHz jiakang transducers to display flow rate through various sizes of pvc pipe. I have created a testing setup similar to the one mentioned in the attached link.

https://e2e.ti.com/support/microcontrollers/msp-low-power-microcontrollers-group/msp430/f/msp-low-power-microcontroller-forum/818315/evm430-fr6047-ultrasonic-design-center-calibrating-clamped-on-transducers-to-work-with-metal-pipe

I am currently getting this adc capture

The waveforms are as follows

Our setup is attached as well

My question is, are the adc capture and waveforms indicative of an accurate measurement. I am getting flow values similar to a metered solution I have setup in my testbed however the waveforms seem a bit erratic. What can I do to optimize these calibrations in the TI software.


Another question I have is I will be translating this similar setup to metal pipes. Is a similar signal achievable with this setup? I will begin designing the TIDA-01486 amplification board to get a stronger signal through metal pipes however any other guidance would be appreciated. 

Thanks,

Darshveer Singh 

  • 0
    TI__Mastermind 32405 points

    Hi,

    1. You pipe diameter is quite large than the one in the APP note. I also want to check whether you have uses the ultrasound gel between the transducer surface and the pipe. The ADC capture seems distorted somehow. Could you also send the configuration page of your GUI?

    2. For other pipe materials, we do not have any experience about it. 

    Best regards,

    Cash Hao

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