Product Details:
- The Penning gauge PTR 225 is a compact active pressure converter housing a Penning measurement system as well as the corresponding operating electronics. They have been developed specifically for integration into vacuum systems and offer a measurement range from 1·10-9 to 1·10-2 mbar.
- The gauge is connected directly to the vacuum system through its DN 25 KF or DN 40 CF flange.
- The electrical connection is provided through a screened 8-pin FCC 68 connector.
- Based on a supply voltage of 24 V the PTR 225 generates the internal supply voltages required for operation of the integrated Penning measurement system. The PTR 225 supplies a logarithmic representation of the vacuum pressure by way of a voltage signal which ranges from 0.66 V to 10 V. Moreover, the high tension generated in the PTR 225 can be switched on and off by applying an external control voltage or by connecting an external switch.
- When the gas discharge in the Penning measurement system is ignited, the operating voltage is raised to 2.8 kV. After successful ignition, this voltage then drops to 1.6 kV thereby increasing the useful service life of the Penning measurement system.
- A status output indicates the two possible conditions of the Penning measurement system:
1. not ignited (including high tension OFF) and
2. ignited (and pressure > 3·10-9 mbar).
A much improved ignition characteristic in the high vacuum range has been obtained through the special design for the electrodes in the measurement system.
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