Direct Drive Pressure Gauges Direct Drive Pressure Gauges   (Click on Image to enlarge)

Description: The advantage of Perma-Cal direct drive over conventional C- tube gauges is simple - only one moving part . No gears, linkages, or springs to wear or break. Perma-Cal gauges have a unique helical-wound elastic element that is attached directly to the pointer shaft. This eliminates the need for any movement-amplifying gears or linkages - the parts of a C-tube that fail most frequently. Perma-Cal gauges maintain their structural integrity and accurate calibration in the most demanding environments , even during prolonged and rugged use. Perma-Cal direct drive pressure gauges provide the lowest cost of ownership by giving the best value in durability, reliability, and accuracy. -------------------------------------------------------------------------------- NO LIQUID FILL Perma-Cal gauges have more durability and longevity than liquid-filled gauges, without the mess or problems of liquid fill. Perma-Cal gauges do not have any of the problems filling solves. There are no gears or linkages to lubricate, and Perma-Cal gauges are internally dampened with a small application of heavy (600,000 centistokes) silicone grease on the moving part that eliminates pointer flutter. Perma-Cal provides a longer life gauge than liquid filled gauges without the leaking or discoloring problems of liquid fill. -------------------------------------------------------------------------------- SAFETY FEATURES Perma-Cal gauges have a very low volume elastic element and solid front case that provide the safest gauge possible. C-tube gauges have a relatively large volume elastic element that in cases of catastrophic failure could spill large amounts of process. Not all direct drive gauges offer the industry standard for case safety - solid front. The Perma-Cal configuration of solid front and blowout features provides the customer with the safest possible case style. Perma-Cal furnishes the safest, most durable gauge in the industry. -------------------------------------------------------------------------------- CERTIFIED ACCURACY All Perma-Cal gauges have a high repeatable accuracy, instantaneous action, and are available as Grade 3A (+.25% full scale), Grade 2A (+.5% full scale), or +.5% mid-scale , +.1% full scale. The full scale accuracy rating is applicable in both ascending and descending modes on all gauges, except for gauges rated 8,000 PSI and above , where the descending mode is +1% full scale. Test gauges (Grade 3A) come with a calibration certificate traceable to the National Institute of Standards and Technology included in the price. Perma-Cal provides the best in durability , reliability, and accuracy. --------------------------------------------------------------------------------