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