I saw a journeyman take the temperature rise of the refrigerant across the evaporator of a walk in cooler. First temp was taken between the outlet of the txv and the distributor, second temp was taken at the outlet of the evaporator near the sensing bulb. He thought he was checking superheat, I know this is incorrect, but I've learned to stop arguing and just look it up later. My question, is there a benefit to this information in troubleshooting? Will adjusting the txv spring change this delta t? He thought it would but was satisfied with the reading he got so no adjustment was made. Thanks for any input.