Need the Datasheet or specifications of NIC0K1L( ultrasonic transmitter receiver module.)

Can any one provide the specification of NIC0K1L ultrasonic transmitter receiver module. I am now trying to build a non invasive flow rate sensor. I used RKI-1089 followed by a filter,amplifier and buffer. The circuit is working perfectly and the receiver is receiving the signal. But the transmitted ultrasonic signal @ 40 khz cannot penetrate even a bottle though we provide high gain when we amplify it. I am now looking for ultrasonic sensor which can actually transmit the signal through pipes. Can any one suggest a sensor module for that or an alternative solution for this??

 

Thank you so much sir for your reply.
Very happy to read your post as we were also planning to work with the same method of doppler shift to measure the velocity. But though the concept is correct we cannot find ultrasonic sensor modules that can make this happen. Ultrasonic flow meters are available as such, But we are looking for the sensor module alone.

 

Thank you so much for your reply.