BL505 DUAL PISTONS PRESSURE BALANCE Model BL505 dual pistons pressure balance is based on the principle of static pressure, which achieves a force balance system through a master piston and a slave piston. When the system is under positive pressure, the balance of the two pistons is disrupted. The slave piston rises and the master piston falls. To restore the original balance of the system, several weights must be added to the slave piston to restore balance. Currently, the weight of the added weights is the pressure value of the tested system. Vice versa, if vacuum is introduced to the system, the salve piston falls and the master piston rises. At this time, several weights must be added to the master piston to balance it, and the weight of the added weights is the vacuum value of the tested system. ■ 0.01% reading or 0.02% reading accuracy ■ Motor drives the weight rotating. ■ The front LED shows the piston position, real temperature and humidity. ■ The oil pressure regulator and oil gas isolator are equipped with needle valves. SPECIFICATION ■ Pressure range: -0.1MPa to 0.25MPa /0.6MPa /1MPa ■ Piston material: Tungsten Carbide ■ Cylinder material: Tungsten Carbide ■ Mass material: 304 stainless steels ■ Base material: Aluminium alloy ■ Medium: Dry air or pure nitrogen ■ Gravity: Custom to local or standard 9.80665 m/s2 ■ Pressure connector: Metric ■ Pressure range selection tab:__ ■ BL505 Dual piston pressure balance base ■ Piston cylinder unit (x2) ■ Adapter kits (NPT, BSPP) ■ Lead wire (for balancing) PTIONAL ACCESSORIES AND SERVICES ■ Manual operated pneumatic hand pump ■ Calibrate spring tube pressure gauges and precision spring tube vacuum gauges. ■ Test mercury pressure gauges and noncorrosive industrial pressure gauges. Balun Technology Co., Ltd T: +86-10-6240 6768 E: [email protected] Add: 1322, F/3, Bldg 1, 33 Zique Rd, Haidian, Beijing100095, China F: +86-10-8978 0678 W: