An approach to the non-linearity of an ionization vacuum gauge at the upper limit of the measured pressure

The development of vacuum measurements down to extremely high vacuum – XHV

“…Other researches have also been performed on the high and low pressure limits aiming at having linear behaviour over a wide pressure range [62,63 ] and on the perturbations to the signal in hot cathode B-A gauges which contribute to errors of gauge measurement. With a B-A gauge pressures as low as 10-9 Pa may be detected.…”