I'm trying to figure out a good way of measuring the water temps going in and out of my radiator. I've made similar water temp measuring probes using copper tubing with a LM34 precision temperature sensor. My current idea involves putting the sensor in a T fitting and sealing the end (see pic). Ideally the sensor would not interfer with the water channel. So my question to you guys: do you think this would pick up the temps and not hinder flow? Or does anyone have other known ways of measuring temps at places other than the res?