PTR225 德国莱宝真空计PTR225

Sensor
Cold cathode sensors - based on the                  sensors with its closed magnetic field                Integration of the transmitter in pro-
well-proven principle of the inverted                causes a negligible stray field. Thus                 grammable control systems is faci-
Penning - are built into the                         the PTR 225/225 S/237 may also be                     litated by the linear characteristic
PENNINGVAC transmitters PTR 225/                     installed close to sensitive parts within            which can be defined by entering a
225 S/237 which have a DN 25 KF or                   a system.                                             simple equation into the computer.
DN 40 CF flange. The housing of the
                                                     The anode ring and the titanium ca-                   Built-in relays (PTR 225 S) allow
transmitter, including its electronics,
                                                     thode plates can be exchanged easily                  switching functions to be performed
as well as the magnet can easily be
                                                     for quick maintenance of the sensors                  directly by the transmitter, without the
removed for degassing of the all-metal
                                                     in case of contamination. The shape                   need of a programmable control.
sensor with Al  O      current feed-
                  2  3                               of the cathode plates is such that they
through. The design of the Penning
                                                     also act as a baffle for the sensors.
                                                               73                      80
          73                      80
                                                                                  POWER    READY
                             POWER     READY
                                                                         114
                    114
                                                                            144
                       130
                                                                                                 30
                                            17
Dimensional drawing for the PTR 225                  Dimensional drawing for the PTR 237
                10
                 9                      Equation
                        U(a) = [1.33 * lg (p/mbar) + 12,66] Volt
                 8