The Ultimate Solution: T PRO Temperature Sensors Three Wire System – Stainless Steel Review

All 3 Perfect, Used With Calibrated Rosemount Temperature Transmitter, Pt-100 Setting 385A/Accurate 0-125°F, 4-20mA, +- 0.5°F Very stable reading/RTD sensor, more if needed, good solder connections on 3-wire Pt 100 RTD sensor.

From what I found on the internet the factor is usually type 385. Type 391 is available but is a special order from Temp-Profi. Bought one of these to connect to Omega PID. At 100 degrees Fahrenheit, there was less than 1/4 degree difference compared to a 1/10 degree certified yellow backed mercury thermometer.

My old PT100 in my sous vide system was sending incorrect temperature readings. I replaced it with this one and the temp gauge only needed to be corrected by 2 degrees and now everything works as expected. I'm glad it's waterproof. The only odd thing is that I think the color coded wires are different than the stock wires. I hope you find this review helpful.