Fluke 721 Pressure Calibration Instruments Key Features Precision pressure calibrator with dual isolated sensors for gas flow calibration (custody transfer) applications Features two isolated, stainless steel, pressure sensors with 0.025% accuracy Includes Pt100 RTD input for temperature measurement (probe optional) Measures 4 to 20 mA signals Provides internal 24 V loop power supply to power a transmitter under test www.fluke.com/en/product/calibration-tools/pressure-calibrators/fluke-721