I used to consider it to be a honor to be introduced as an expert in my field until I looked up the definition in Funk and Wagnall's. I found an ex is a has been and a spurt is a drip under pressure.
I've worked on equipment and built a clean room for emissions labs, so I'm aware of the scales you describe. The medical scale I use has a top, back, front, and doors on both sides. It's pretty stable and I reload in a conditioned room in the house.
Thanks. I would prefer digital if I can find one that's accurate and don't drift. I'm currently using my son's medical scale accurate to .001 grams. I'm going to have to give it back shortly.
Most systems will automatically switch at about 30 deg. Their efficiency drops off dramatically below that. I've spent the last 50 years in the business.
I've been in the business for over 50 years. If, as you indicate, the compressor is running and the coil is not cold, you either have a system that is low on refrigerant or has an inefficient compressor. Either of these repairs typically cost near replacement cost imho.