Titan 138501 Thermocouple K Type 1/4-20

Part number 138501 is a K Type Thermocouple with 1/4-20 mounting thread, a precision temperature sensor specifically engineered for the Titan Helix VR and Helix FR plural component spray systems. These systems utilize the advanced SureFire Heating System, which actively manages coating temperature from the heater block, through the hoses, all the way to the spray gun. The thermocouple is the critical feedback component that enables this precise temperature control, ensuring plural component coatings cure properly and perform to manufacturer specifications.

Within the Helix heated hose assembly, temperature sensors are installed approximately 36 inches from the end of each fluid hose. These sensors continuously monitor the temperature of both the A side (isocyanate) and B side (resin) components independently. The sensors are connected to the Helix control panel via dedicated communication cords located beneath the pressure gauges, providing real-time temperature display and enabling the operator to maintain optimal material viscosity and reaction characteristics. The 1/4-20 threaded mounting configuration provides secure, leak-proof installation directly into the heated hose assembly or manifold.

K Type thermocouples are the industry standard for industrial temperature measurement, offering a wide temperature range, excellent durability, and reliable performance. Constructed from Chromel and Alumel alloys, they provide accurate readings across the operating range required for plural component coating applications. The threaded probe design ensures positive thermal contact with the fluid stream for rapid response and consistent accuracy. Failure of this sensor results in loss of temperature display, inaccurate readings, or inability to maintain set temperature, compromising coating quality and cure. Replacement with genuine 138501 restores precise thermal management and application reliability.