I recommend you to work with the thermocouples. They are accurate and such a device really does not cost much.
Without US gel you will not be able to work, these pads do not help either. You alway need gel. Also, you don’t need a pad between the transducer and the shaft (ventral, lower side). Finally, you need to get used to the mess :)
I have found the solution for me with a silicone phantom. This is durable until it is too short for the longer penis. But that is then a pleasant reason to replace it.
Details can be found in Kyrpa’s thread: US Phantom made of silicone.
The setup is kind of like yours, only I use the pad instead of my hand. So viewed from above:
- Silicone phantom (dorsal)
- US gel (optionally with thermocouples)
- US gel
- transducer (ventral)
The task of the US pad is to avoid a standing wave. It looks like this: reflections.JPG
But it is important that phantom must be on the top of the penis. The scheme shown in the picture is only to explain the principle, but not the arrangement on the penis.
Since you are working with 1 MHz, you have to place the transducer on the bottom side (ventral). But this works really well.
If you want to know more of the theory, you can find this info here: Heating problems with extender users
The US gel makes the pad “stick” a bit. It holds by itself and does not need any further fixation.
If you don’t like a DIY solution, you can of course buy a pad like you suggested and use it dorsally. If, like me, you still want to support with IR, then I don’t know if the pads can withstand that. The silicone phantom can.
Last edited by Rocco25 : 04-25-2021 at .