The 452 Series heated regulators are designed to vaporize and maintain gaseous samples in the vapor phase. Suited for applications requiring positive controlled heat input, regulators are used in sampling systems to vaporize a sample and maintain it in the vapor phase for analysis. Vaporizers are available in either steam or electrically heated models. Steam-heated models have a maximum temperature limit of 500°F. Electrically heated models are available in 50, 100 or 150 watt models with temperature ranges up to 380°F. CONCOA 1501 Harpers Rd. Virginia Beach, VA, 23454