So it’s just showing the different types of sensors that might be used for parameter measurement.
Non-contacting is a device which does not need to be physically near a system to work, such as laser thermometers or many optical devices.
Contacting sensors require being touch the system to work properly, such as conventional thermometers, oil-immersion microscopes - hell, even things like rulers count as contact sensors, since you can’t an accurate reading unless it’s up against your sample.
Invasive-contact sensors integrate themselves into the sample for measurement. Thermocouples often will be placed into boreholes to measure the temp of a metal object such as a hot-end, various sensors are directly from feedback of a system (an example is looking at variations in a motor’s electical signals to determine if it’s experiencing resistance).
Sample extraction is what it sounds like. Examples of this are sample augers, which drill a cylinder out of a sample, needles for drawing fluids as non-invasively as possible, and pipettes.
tetris11@lemmy.ml 2 days ago
Okay I’m gonna need some context here
swab148@lemmy.dbzer0.com 2 days ago
Cocaine wasn’t enough for this guy
SubArcticTundra@lemmy.ml 2 days ago
He wanted to smell the fish up real close