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® WorleyParsons <br /> resources&energy <br /> Temperature Degrees F <br /> Pressure <br /> Near Atmos. In. of water <br /> Above Atmos. PSIG <br /> Below Atmos. In. of Hg Absolute <br /> Absolute PSIA <br /> Level Percent of range for process <br /> Flow <br /> Liquids GPM <br /> Water GPM <br /> Gas or Vapor SCFH* <br /> Air&Nitrogen SCFH* <br /> Analyzers Ph, %,us <br /> * Defined at 60° F and 14.69 PSIA <br /> 5.6.2 Pressure Instruments <br /> Where necessary for operation, either industrial-type 4-1/2-inch-diameter pressure gauges <br /> with white faces and black scale markings, or indicating pressure transmitters will be <br /> provided. Pneumatic receiver gauges will be 3-1/2 inch oval size. In general, pressure <br /> instruments will have linear scales with units of measurement in pounds per square inch <br /> gauge. Pressure gauge accuracy will be +0.5 percent of full range per ANSI Specification <br /> B40.1, Grade 2A. Pressure instruments will generally have screwed connections. Pressure <br /> gauge stem connection will generally be 1/2"NPT. <br /> Pressure gauges will have either a blowout disk or a blowout back and an acrylic or <br /> shatterproof glass face. <br /> Pressure gauges on process piping will generally be visible 10 feet from an operator's <br /> normal stance at floor level and will be resistant to plant atmospheres. <br /> Connections to piping or equipment will be in accordance with piping specification and <br /> instrument installation details. <br /> Pressure test points will have isolation valves and caps or plugs. Pressure devices on <br /> pulsating services will have pulsation dampers. <br /> Fire protection system pressure gauges will be designed in accordance with UL standards. <br /> "Face" gauges in high vibration areas will be liquid filled and include a vibration snubber. <br /> "Face" gauges used for measuring high pressure or temperature process media will be <br /> fitted with an isolation diaphragm. <br /> 5.6.3 Temperature Instruments <br /> Lodi Energy Center 3.5 -7 LEC AFC <br /> 071608 Rev.A <br />