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BG 5043 BEN / A (2016-10) PTR225_237.oi
In all communications with Pfeiffer Vacuum, please specify the information given
on the product nameplate.
Specimen nameplate
This document applies to products with part number
PT T13 148 300
(PTR 225,
DN 25 ISO-KF)
PT T13 148 320
(PTR 225 S, DN 25 ISO-KF, with switching function)
PT T13 358 300
(PTR 237,
DN 40 CF-F)
The part number (No) can be taken from the product nameplate.
We reserve the right to make technical changes without prior notice.
All dimensions in mm.
The references to diagrams, e.g. (4/5), consist of the fig. no. and the item no. in
that order.
The Penning Gauges PTR 225, PTR 225 S and PTR 237 have been designed for
vacuum measurement of in the pressure range of 1·10
-9
to 1·10
-2
mbar.
The Penning gauge PTR 225, PTR 225 S or PTR 237 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.
Unpack the PTR 225, PTR 225 S or PTR 237 immediately after delivery, even if it
is to be installed at a later date.
Examine the packaging for any external damage. Completely remove all packaging
materials.
Retain the shipping container and the packaging materials in the event of
complaints about damage.
Check that the PTR 225, PTR 225 S or PTR 237 is complete and carefully examine
the gauges visually.
If any damage is discovered, report it immediately to the forwarding agent and in-
surer. If the damaged part has to be replaced, please get in touch with the orders
department.
Based on a supply voltage of 24 V the PTR 225, PTR 225 S or PTR 237 generates
the internal supply voltages required for operation of the integrated Penning mea-
surement system. The PTR 225, PTR 225 S or PTR 237 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,
PTR 225 S or PTR 237 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 oper-
ating 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.
Product Identification
Validity
Intended Use
Description
Unpacking and Checking
Design and Function
