This self-limiting sample hose operates without any temperature control or voltage limiting device, and is intended for stack gas sampling to prevent the temperature from dropping below dew point. The hose maintains the desired minimum operating temperature of 300F, even at subzero ambient temperatures and in any weather conditions. Hose construction is a 3/8-inch outer diameter Teflon core, heating element, electrical insulation and a half-inch outer layer of thermal insulation. The hose is supplied in 50-foot lengths and operates on standard 115V power. It installs easily and can be left unattended.
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