Part number PT R26 001 (DN 40 ISO-KF flange)
Measuring range: 5 x 10-9 to 1000mbar
The PKR 251 gauge consists of two
separate measurement systems (the Pirani and the cold cathode system according
to the inverted magnetron principle). They are combined in such a way that for
the user, they behave as one single measurement system.
the measuring signal is output as a logarithm of the pressure over the whole measurement range .