BW-T-B3 beaded T thermocouple can be used to read ambient temperatures. Beaded thermocouples are idea for surface or air temperature. Exposed 5/8″ split with bead weld tip, type T thermocouple, 2″ striped leads, 3′ total length. Produces a nonlinear mV output that need cold junction compensation to read absolute temperature ( ref: https://srdata.nist.gov/its90/type_t/tcoefficients.html ). Simple to use with linear 4-20mA thermocouple transmitters to add temperature readings to a PLC https://robertoweninc.com/product/din-thermocouple-transmitters/