Versatile instruments provide calibration 1-30 inHg vacuum (0.03-1 bar) and 3-500 psi (0.2-35 bar) in one easy-to-use yet highly accurate primary standard. A selector valve to convert units of pressure to vacuum mode without the need to exchange the piston. The units are manufactured to the highest standard with certified accuracy can be tracked on international standards Laboratory such as the Indonesian Institutel of standards and technology (NIST). This type of piston/cylinder pneumatic standard provides excellent stability, repeatability and accuracy. Optional built-in hand pumps can be added for both pressure and vacuum generation.
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