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Glass-Trac Transparent Gages use clear, see- through glass on both sides so that both the color and the interface of liquids can be viewed. Transparent glass is flat on both sides. Level indication depends on the color of the liquid or meniscus. Transparent gages have flat glass on both sides of the chamber to allow sufficient light to enhance viewing. Illuminators are used to supplement ambient light. Since transparent glass is flat on both sides, the glass may be shielded by mica or PCTFE (Formerly Kel-F ®, a registered trademark of 3M). Specify transparent gages where:
• Liquid-liquid interface must be viewed;
• Shields to protect the glass must be used;
• Steamabove350PSIG(2068KPaG)istobe
gaged, using mica shields;
• Liquid viscosity may foul reflex prisms.
Transparent Gages are made in three pressure series (maximum 3000 psig @ 100oF) and are tapped for 1⁄2” or 3⁄4” NPT connections. The standard Glass-Trac level gages are designed for -20oF service.
On Glass-Trac Transparent Close Hook-up Gages with 1⁄2” NPT connections, the center-to-center dimension is the same as the overall length on standard gages. On Close Hook-up Gages with 3⁄4” NPT connections the center-to-center dimension is the same as the overall length on standa. $299 each for complete set.
