Marshall Electronics’ Optical Systems Division released two 323-mm (12.72-inch) high-temperature zoom pinhole lenses designed to monitor hot environments from a greater distance to help protect cameras from heat-related damage. The two new models are V-ZPL-HITEMP-A-323 with a 1.2-mm pinhole diameter and V-ZPL-HITEMP-B-323 a 3.8-mm pinhole diameter. The lenses are ideal for high-temperature industrial process applications wherein an observation window is structurally recessed. Both lenses feature stainless steel housing for extreme durability in harsh environments, such as kilns, industrial furnaces, incinerators and manufacturing plants using high-temperature processes. The stainless steel bodies withstand corrosion. Sapphire and quartz optical elements offer superior hardness and permit short-term lens operation at temperatures reaching 1000°C for up to 10 minutes. The sapphire and quartz elements will withstand impact from scatter sand and gravel, making them ideal for volatile environments.

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