measure low differential pressure in harsh environments

The Ashcroft&reg Types 5503 and 5509 can handle static pressures of up to 3,625 psi and uses a stainless steel diaphragm-sensing element to protect the gauge from corrosive processes. Units offer the option of Hastelloy C wetted materials. Duratherm 600 is used for pressures under 15 psid. Gauges come standard with an external zero-adjust feature and users can choose from various case styles and materials, fill-fluids, and mounting options to match the requirements of the particular application. Gauges can be ordered in psid, millibar, bar or inches of water ranges with or without electrical contacts. The Type 5503 has a 1.6% full scale accuracy with a 1/2% upscale accuracy option; the Type 5509 has an accuracy of 2.5% full scale. They are available in 4 inches or 6 inches dial sizes.