Fluke 721Ex Dual Sensor Precision Pressure Calibrator (36/1500PSI Gauge)The ideal tool for gas custody transfer applications in potentially explosive atmospheres is the Fluke 721Ex Precision Pressure Calibrator. With dual isolated pressure sensors, it allows you to take simultaneous static and differential pressure measurements with a single tool.Intrinsically Safe � IECEx and Atex Ex ia IIB T3 Gb (Zone 1) ratedIdeal for gas flow calibration (custody transfer) applicationsTwo isolated, stainless steel, pressure sensors with 0.025 % accuracyPt100 RTD input for temperature measurement, (probe optional)Switch test on both pressure inputsPressure displayed in the user�s choice of 19 engineering unitsLarge backlit graphic display can display up to three inputs simultaneouslyStore five instrument setups for recall and useIncludes: Dual Sensor Pressure CalibratorSoft caseFour (4) AA batteriesManualTraceable calibration certificateTest leads