NOSHOK”s 621 & 622 Series explosion-proof pressure transmitters are designed for applications that require pressure measurement in hazardous locations. The pressure transmitters support accuracy to +/-0.25 percent full scale (best fit straight line). An advanced diffused semiconductor and sputtered thin film sensor provide maximum stability. The transmitters are available with a standard threaded connection, as well as a flush diaphragm configuration. Welded 316 stainless steel, and Elgiloy construction with no internal o-rings, gaskets, or seals. The transmitters have a half-inch NPT conduit connection and low-power voltage outputs are available. CE compliant to suppress RFI, EMI, and ESD; Factory Mutual Canadian Standards approved; NACE MR0175/ISO 15156 compliant; ANSI; ISA-12.27.01-2003 approved single seal; NACE MR 175/ISO 15156 compliant.