Technical Data                                              PR 25                    PR 26                    PR 27                    PR 28

Measurement range                            mbar       1 x 10-9 to 10-2         1 x 10-9 to 10-2         1 x 10-9 to 10-2         1 x 10-9 to 10-2

                                             （Torr）   （0.75 x 10-9 to 10-2）   （0.75 x 10-9 to 10-2）    （0.75 x 10-9 to 10-2）    （0.75 x 10-9 to 10-2）

High voltage supply （anode potential）           kV         +3.3/+1.6                +3.3/+1.6                +3.3/+1.6                +3.3/+1.6

Storage temperature range                       °C         -25 to +80               -25 to +80              -25 to +80               -25 to +80

Nominal temperature range                       °C          0 to +80                 0 to +80                 0 to +80                0 to +200

Bake out temperature （flange）                   °C              –                        –                       –                       350

Permissible overload （abs.）                    bar             6 1）                    6 1）                     6 1）                     6 1）

Dead volume                                    cm3             21                       21                       21                       21

Materials in contact with the medium                     stainless steel,         stainless steel,         stainless steel,         stainless steel,

                                                           nichrome,                 nichrome,                nichrome,                nichrome,

                                                       ceramics, titanium       ceramics, titanium      ceramics, titanium       ceramics, titanium

Weight, approx.                            kg （lbs）        0.75 （1.66）             0.75 （1.66）               0.8 （1.66）               0.8 （1.66）

Vacuum connection                              DN            25 KF                    40 KF                    40 CF                    40 CF

Operating units                                           COMBIVAC                 COMBIVAC                 COMBIVAC                 COMBIVAC

                                                        CM 31, 32, 33 /           CM 31, 32, 33 /         CM 31, 32, 33 /         CM 31, 32, 33 /

                                                     PENNINGVAC PM 31         PENNINGVAC PM 31         PENNINGVAC PM 31        PENNINGVAC PM 31

Ordering Information                                        PR 25                    PR 26                    PR 27                    PR 28

PENNINGVAC sensors                                     Part No. 157 52          Part No. 136 46          Part No. 136 47          Part No. 136 48

Replacement cathode plate, titanium

（5 pcs., incl. 5 ceramics discs）                     Part No. EK 162 91       Part No. EK 162 91       Part No. EK 162 91       Part No. EK 162 91
Replacement anode ring                               Part No. 200 28 711  Part No. 200 28 711  Part No. 200 28 711  Part No. 200 28 711

Baffle, with centering ring                            Part No. 230 078        Part No. 230 079                   –                        –

1） When using an ultra sealing gasket at the vacuum connection

Note:
PR 26 replaces PR 31, 32, 35
PR 27 replaces PR 36