BURGESS HILL, England--(BUSINESS WIRE)--Edwards is introducing the P3 handheld vacuum measuring system. An easy to use, battery powered device with direct on-board display of measured pressure, which ...

IT is known that the range of a hot-wire vacuum gauge may be extended to 10 mm. mercury pressure or above, if by some means the current supplied to the wire is increased with increasing pressure 1,2.

THE mercury filled McLeod gauge presents so far the best absolute instrument and is widely used in the range of low pressures. The presence of mercury vapour in the vacuum system from the gauge itself ...