Ultersonic Flowmeter 91W

Aboosh,

We cannot read your mind to know what has been done.We cannot see the installation to know how it was done.You do not provide any useful information that could be used to help you.

CONTACT YOUR SUPPLIER and ask them for help.

Perform a search to find a troubleshooting guide FOR YOUR INSTRUMENT. Then follow the instructions you will find there.If all else fails, call a technician.

You claim to be an electrical engineer, figure it out!

You might draw some inspiration from this :

Positively Good Productions

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Have you read this?

https://portal.endress.com/wa001/dla/5000300/2064/000/01/TI00105DEN_1311.pdf

Transit time ultrasonic clamp-on flow meter: Failure to get a flow signal

1. Misplaced receiver transducer - outside the physical location for given fluid's sonic velocity and pipe size/material.

2. transducer cable or cable connector problem

3. Missing or insufficient pipe-to-transducer coupling compound (grease) or insufficient transducer-to-pipe coupling pressure

4. Poor exterior pipe condition - dirt, rust, loose paint

5. Scale or deposits inside the pipe wall attenuate the signal.

6. Entrained air, gas, bubbles or suspended solids attenuate the transit time signal.

7. High fluid velocity sweeps the acoustic signal past the receiver transducer.

8. Interference from ultrasonic 'noise' downstream of a valve (David Spitzer, http://www.flowcontrolnetwork.com/downstream-disturbances/

This is what happens when you not only throw away the manual, but also the box; then you can't even spell the name of the device properly.