Dwyer PTGD-SC01A is a piston-type gauge for measuring differential pressure. It has a temperature range of 176°F (80°C) and an accuracy of ±2% FS. It can be mounted in any position and is compatible with gases and liquids. The wetted materials include aluminum or 316 SS for the gauge body, piston, and spring. The seals are made of Buna-N (standard) or PTFE. The pressure limit is 3000 psi (206 bar) for aluminum body and 6000 psi (413 bar) for SS body. It has 1/4" female NPT end connections standard, with back or bottom connections available. The dimensions are 2.5" (63 mm) or 4.5" (115 mm) with an acrylic window.