The Texas Electronics, Inc. Model TTH-1315 Sensor utilized a Rotronics HygroClip S3 Humidity Temperature Probe with interchangeable sensing elements that do not require calibration.

The unit is encased in a corrosive-resistant spun aluminum radiation shield that allows for wind aspiration and protection from the sun's UV rays. The shield is finished in white baked-enamel to provide for virtual cosmetic invisibility while reflecting much of the radiant heat from surrounding objects and the sun.

Overcurrent protection is provided in a NEMA 4X enclosure that is mounted to the angled mounting bracket on the sensor. Tranzorbs are utilized to protect the sensor and signal conditioning units in an overcurrent situation.

With DC voltage applied to the sensor, the unit will return signal voltages that are linear to the range of the instrument. Signal conditioning is applied to ensure proper voltages are returned and can be amplified or modified to a current output to connect to any analog signal processing unit.