A physical measurement of the whole vacuum pressure range is not necessary.
Welch digital vacuum gauge.
Rough vacuum gauges measuring range.
The pressure to be measured is separated by a diaphragm from a reference vacuum and compared to the latter.
It is a highly accurate full range digital millitorr gauge using field proven thermocouple vacuum sensor technology.
Atmospheric to 1 mbar besides the traditional vacuum gauges with mechanical sensors e g bourdon capsule gauge diaphragm manometers with electronical diaphragm sensors are well established piezo and capacitance gauges.
Welch model 1526 diagnostic vacuum gauge is a rugged portable vacuum measurement instrument designed specifically for the demands of field use.
Particular sensors and gauges must be used for parts of the whole range rough high and ultra high vacuum.
The total range of scientifically useful vacuums extends from approx.
Printed from sargent welch website user.
1000 mbar atmospheric pressure down to 10 12 mbar the ultra high vacuum range.
Besides the traditional vacuum gauges with mechanical sensors e g bourdon capsule gauge diaphragm manometers with electronical diaphragm sensors are well established piezo and capacitance gauges.