Pressure/vacuum deadweight tester

New Fairfield, Conn.— T3500 series is a primary pressure standard capable of both pressure and vacuum calibrations in one unit. Testers are NIST traceable and provided in ranges from 5 to 400 in H2 through 3-500 psi for pressure and 1-30 in Hg for vacuum. Standard accuracy is 0.015% of reading with 0.

By Staff April 1, 1999

New Fairfield, Conn.— T3500 series is a primary pressure standard capable of both pressure and vacuum calibrations in one unit. Testers are NIST traceable and provided in ranges from 5 to 400 in H 2 through 3-500 psi for pressure and 1-30 in Hg for vacuum. Standard accuracy is 0.015% of reading with 0.01% available. A selector valve converts from pressure to vacuum mode. Optional built-in hand pumps can be added for pressure and vacuum generation. Pressurements