Model HTV

Thermocouple, Sulfur Processing Service, Unpurged, ATEX, IECEx

The Delta Controls Model HTV Unpurged Thermocouple is designed for the primary purpose of reliably protecting a vessel and its refractory lining from excessive temperatures. The HTV is intended for installations without access to a purge system.

The design of the HTV is the result of attention to detail and more than 50 years of experience in the sulfur recovery industry. The thermocouple junction is isolated from the process gases by using a permeation resistant thermowell constructed of monocrystalline sapphire. The patent-pending QSeal™ design prevents trace amounts of process gases from leaking past the seals and accumulating inside the thermowell. In the event of thermowell breakage, multiple redundant seals prevent the release of process gases.

For most applications, the Model HTX purged thermocouple is preferred as it offers the highest reliability and best track record of any thermocouple in sulfur processing service. However, Model HTV provides a highly reliable alternative for installations unable to accommodate the Model HTX’s installation requirements.

The HTV is built to meet each customer’s specific installation requirements such as thermocouple type, operating temperatures, nozzle size, insertion length, and materials of construction. The HTV assembly is furnished complete with all necessary installation components. Installation tools are available, and recommended, to accurately produce the refractory borehole in the correct size and alignment needed for the thermocouple assembly.