Technical Data                                                               THERMOVAC Transmitter

                                                                               TTR 211 PB/D / TTR 216 PB/D
      Display range                        mbar （Torr）                             5 x 10-4 to 1000 （3.75 x 10-4 to 750）

      Measurement uncertainty                                   20% in the range 1 x 10-3 to 1 x 10-2 mbar （0.75 x 10-3 to 0.75 x 10-2 Torr）

                                                                      15% in the range 1 x 10-2 to 30 mbar （0.75 x 10-2 to 22.5 Torr）

      Principle of measurement                                                       Thermal conductivity acc. to Pirani

      Supply voltage                                                                  14.5 to 36  V DC, typ. 24  V DC

                                                                                           Ripple voltage < 2 Vpp

      Power consumption                             VA                                              < 2

      Storage / nominal temperature range           °C                                    -20 to +70 / +10 to +50

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

      Protection class                                                                              IP 40

      Dimensions （H x W x D）                      mm                                           106 x 73 x 56

      Weight, approx.                         kg （lbs）                                           0.29 （0.64）

      Inflammability                                                                            UL 94 - V 2

      Sensor                                                                             Exchangeable sensing cell

      Filament                                                                    Tungsten （TTR 211）/platinum （TTR 216）

      Vacuum connection                            DN                                              16 KF

      Bake out temperature, max                     °C                                        80 at the flange

      Dead volume, max.                           cm3                                                11

      Materials in contact with the medium                                                       TTR 211:

                                                             Aluminum, nickel-plated steel, Vacon, tungsten, CrNi8020, glass, epoxy cement;

                                                                                                TTR 216 S:
                                                                       Stainless steel, CrNi, Al2O3 ceramics, NiFe, Mo, Ni, platinum

      Over-pressure rating, abs.                                                     TTR 211: 3 bar, TTR 216: 10 bar

      Signal output （Ra   ≥10 kΩ）                                                               0 to 10.6 V
          Measurement signal                                                   1.9 to 10 V, corresp. 5 x 10-4 to 1 x 103  mbar

                                                                                   logarithmic divisions 1.286 V/decade

         Status signal                                                                     broken filament 10.5 V

      Trigger                                                                          n.o./changeover relay contact
         Adjustment range                 mbar （Torr）                                   1 x 10-3 to 500 （0.75 to 375）

          Hysteresis                                                                about 30% of the adjusted pressure

          Reaction time                            ms                                               < 50

          Rating                                                                              60 V, 0.5  A DC

          Error status                                                     contact open in case of broken filament or supply off

      Status indicators                                                               Operation （Power）: Orange LED

                                                                                        Trigger （active）: Green LED

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

      Electrical connection                                                          FCC-68 socket, 8 way with shield

      Cable length, max.                            m                                               100

      Interface
         TTR   211 D / 216 D                                                                     DeviceNet

         TTR   211 PB / 216 PB                                                                  Profibus DP