Technical Data                                                                    PENNINGVAC Transmitter

                                                                                   PTR 225 / PTR 225 S / PTR 237

       Display range                         mbar （Torr）                           1 x 10-9 to 1 x 10-2 （0.75 x 10-9 to 0.75 x 10-2）

       Measurement uncertainty                                                       30% in the range 1 x 10-8 to 1 x 10-4 mbar
                                                                                           （0.75 x 10-8 to 0.75 x 10-4 Torr）

       Principle of measurement                                                     Cold cathode ionization according to Penning

      Supply voltage                                                                       14.5 to 36   V DC typ. 24    V DC
                                                                                                 hum voltage < 2 Vpp

       Power consumption                               VA                                                 < 2

      Storage temperature range                        °C                                              -20 to +70

       Nominal temperature range                       °C                                             +10 to +50

       Max. rel. humidity
       （climatic class F）                         % n.c.                                                   95

       Protection class                                IP                                                  40

       Dimensions （H x W x D）                        mm                                              125 x 80 x 73

      Weight, approx.                            kg （lbs）                                               0.5 （1.1）

       Inflammability                                                                                 UL 94 - V 2

      Sensor                                                                                    Detachable for cleaning

      Vacuum connection                               DN                                            25 KF or 40 CF

       Degassing temperature, max.                     °C                                   250 with electronics detached

       Dead volume, max.                             cm3                                                   21

       Materials in contact with the medium                               Stainless steel, CrNi, Al2O3 ceramics, NiFe, Mo, Cu, Ni, titanium

       Over-pressure rating （abs.）                    bar                                                  10

      Signal output （Ra     ≥10 kΩ）                                                                   0 to 10.6 V
          Measurement signal                                                                         0.66 to 10 V,
                                                                                      corresponds to 1 x 10-9 to 1 x 10-2 mbar

                                                                                         logarithm. divisions 1.333 V/decade

      Trigger （PTR 225 S）                                                                     Changeover relay contact
          Adjustment range                   mbar （Torr）                           1 x 10-9 to 1 x 10-3 （0.75 x 10-9 to 0.75 x 10-3）

          Hysteresis                                                                     About 30% of the adjusted pressure
          Rating                                                                                    60 V, 0.5  A DC
          Error status                                                         Contact in its rest position when “no ignition” / “HT off”

       High voltage control input                                                           ON: At U < 2.9 V, or U > 12 V
                                                                                             OFF: At U > 3 V, or U < 7 V

      Status output                                                                                  Voltage level
          Ready to measure                                                                       HIGH （typ. 24 V DC）
          Error （no ignition）                                                                          LOW （0 V）

      Status indicators                                                                         Operation: Orange LED
                                                                                       Ready to measure （ignited）: Green LED
                                                                                              Trigger （active）: Green LED

       Monitor output （Ra    ≥100 kΩ）                                                            Jack socket （3.5 mm）
                                                                                        at which the trigger setting is available

       Electrical connection                                                              FCC-68 socket, 8 way with shield

       Cable length, max.                              m                                                  100

       Interface
          PTR 225 PB                                                                                  Profibus DP
          PTR 237 D                                                                                    DeviceNet