The Pfeiffer PBR 260 Compact Full Range™ BA Gauge has been
designed for vacuum measurement of non-flammable gases
and gas mixtures in a pressure range from 750 to 10-10 Torr. The gauge is a part of the Pfeiffer Vacuum Compact Gauges family and can be operated in connection with the
MaxiGauge™ vacuum measurement and control unit or with
another evaluation unit.
Over the whole measurement range, the PBR 260 Compact
FullRange™ BA Gauge has a continuous characteristic curve
and its measuring signal is output as logarithm of the pressure.
The gauge functions with a Bayard Alpert hot cathode ionization
measurement system and a Pirani measurement system.
This Agilent Varian PCG-752 Pressure Gauge is a Pirani Capacitance Diaphragm with a single tungsten filament design. It has set points and a green and red LED display. The gauge can measure pressure from 3.8 X 10-5 Torr to atmosphere. This PCG gauge is a combination gauge consisting of a Pirani sensor and a diaphragm capacitive sensor. Both sensors are constantly active. At low pressures, only the signal of the Pirani sensor is used for pressure measurement; at high pressures, only the signal of the diaphragm capacitive sensor is used. To determine the output signal in the intermediate range, both signals are used proportionally to the pressure.