The AMETEK HYDRA-LITE Hydraulic Deadweight Tester is a primary standard that features a re-entrant type measuring piston and cylinder assembly that helps maintain accuracy as the test pressure increases. The HL Series tester is designed for rapid interchanging between high and low pistons and is NIST traceable and accurate to +0.05% using non-magnetic die-cast alloy or aluminium weights calibrated to international standard gravity at 980.665cm/sec2. A compact screw pump with ratchet handle is easy-to-use. The HL tester is self-regulating with accuracy independent of the operator. The tester’s suspended weights feature a low centre of gravity which reduces side thrust on the measuring piston and cylinder assembly. TEFLON® seals on the pump piston reduce friction between the piston and bore and reduce maintenance requirements. Accurate to +0.05% of Indicated Reading Optional DADT Doubles Accuracy Ranges- 10 to 3000 PSIG 100 to 22500 PSIG 10 to 700 PSIG 1 to 225 Bar 10 to 225 Kg/cm2
NIST Traceable
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Test & Calibration 
