TDS501: Dew Point Sensor down to -70 °C Td (-94 °F Td)

Fast response time and process reliability
High repeatability and an accuracy of ±2 °C Td
Pressure rating of up to 80 bar (1,160 psi)
Responds immediately to dew point changes at all times

https://www.epluse.com/products/dew-point-measurement/dew-point-transmitters/tds501/