BL522 Fully Automatic Pneumatic Piston Gauge The model BL522 series fully automatic pneumatic piston gauge performs great pressure accuracy and an excellent long-term stabilization as a primary standard. It is perfect solution in accredited pressure metrology institute and industrial pressure calibration laboratory. ■ Gauge pressure, absolute pressure ■ Auto apply pressure and fine adjust ■ Auto select mass and rotate floating mass ■ Electric control and gas control ■ Piston floating position limitation control ■ Advanced rotation system can release mass set with fixed speed, no effects for measure ■ Built -in sensors measure relative humidity, barometric pressure, ambient temperature and piston-cylinder temperature. ■ Device can measure and provide real time indication of piston position, drop rate, rotation rate and rotation declaration. ■ Terminal can adjust local gravity value, head difference, deformation coefficient, diameter changes and media densityRS232 and USB communication ■ With mA, V measure and 24V loop power SPECIFICATION ■ Piston material: Tungsten carbide ■ Cylinder material: Tungsten carbide ■ Mass material: Forged non-magnetic 316SS ■ Piston and bell weight: 1kg ■ Connector: Metric (NPT and BSP are option) ■ Mass selector and base: 46x46x60cm / 50kg ■ BL522 Pneumatic piston gauge base ■ Forged non-magnetic 316 stainless steel mass set ■ Mass auto selector ■ Pneumatic pressure controller ■ Pressure calculator and terminal ■ Adapter kits include NPT and BSP ■ Pressure connection tube ■ Three pieces of 1.5-meter test leads ■ 110V/220V external power adapter OPTIONAL ACCESSORIES AND SERVICES ■ Calibration certificate includes mass (P/N: CAL-522) ■ Primary pressure stands in national or regional metrology laboratory Add: 1322, F/3, Bldg 1,33 Zique Rd, Haidian, Beijing 100095, China