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Every index of class 0.005 and 0.01 Dead Weight Tester of our factory has reached the international advanced level.

The use:  as working standard ( 0.005%) and  high – precision  measurements. 

Characteristies:

●     Be used for working primary standard or calibrating  high precision instruments.

●     High sensitivity of piston gauge at the lower pressure makes sure the accuracy as follows:  class 0.005  Dead Weight Tester  is ±0.005%   class 0.01   Dead Weight Tester  is ±0.01%.   That is to say: they have the superiority of wide range.

●     Piston and piston cylinder are mand from WC hard metal alloy and polished by a fine furbishing     process,  so that the additional error of temperature and  distortion error are very small the decline    speed of piston is also very low , and the duration of  free  rotation of piston is very long . Hence the    useful  lifetime of piston system is excessively long.

●     Piston gauges with the upper pressure 60Mpa , 100Mpa, 160Mpa, 250Mpa , 500Mpa using Di-(2-ethylhexyl) sebacate as the pressure medium also greatly improve the sensitivity of piston gauges due to the low viscosity of liquid, whose viscosity is only 20 to 25mm2/s.