BL502 PNEUMATIC DEADWEIGHT TESTER With high precision accuracy, the model BL502 pneumatic deadweight tester is the ideal primary standard for defining the pressure scale in pneumatic range from 5kPa to 10MPa. The piston cylinder assembly is the heart of the dead weight tester and responsible for its high accuracy. Because of the extreme hardness of this material, the pressure distortion (expansion) coefficient is negligible. The low friction coefficient provides minutes of turning with just a little swing of the masses. ■ Accuracy of lower limit range keeps same as upper limit range ■ The piston and cylinder are tungsten carbide, which provides stability, durability, low thermal coefficients and distortion. ■ Built -in pressure release valve and pipeline ■ High quality needle valves provide optimum control and sealing ■ Assembled three-stages air purifie cr on a molecule filter level (0.01 ^.m). ■ Absolute pressure chamber (optional) ■ Primary pressure standard in lab ■ Reference pressure measure in workshop ■ Piston and cylinder material: Tungsten Carbide ■ Mass material: 304 stainless steels ■ Pipeline material: 316L stainless steel ■ Base material: 304 stainless steels ■ Seal material: Buna-N, PTFE, Cu Alloy ■ Medium: Pure nitrogen or dry air ■ Gravity: Standard 9.80665 m/s2 or custom local ■ Pressure units available: MPa (bar or PSI is option) ■ Pressure connector: Metric (NPT or BSP is option) PRESSURE RANGE SELECTABLE SHEET ■ BL502 Pneumatic deadweight tester base ■ Piston cylinder unit ■ 304 stainless steel mass set ■ Mass carrier or bell ■ Adapter kits (NPT, BSPP) OPTIONAL ACCESSORIES AND SERVICES ■ Electric pressure pump (P/N: BL531) ■ Nitrogen gas bottle (buy locally) ORDERING MODEL NUMBER Balun Technology Co., Ltd T: +86-10-6240 6768 E: [email protected] Add: 1322, F/3, Bldg 1, 33 Zique Rd, Haidian, Beijing 100095, China F: +86-10-8978 0678 W: