INFICON UL5000 Dry Helium Leak Detector - Manual (Page 26)

26
Installation
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2.3.2.4 Recorder
The recorder output Fig. 2-6 /4 may be used to log the leak rate, the inlet pressure
and the forevacuum pressure.
The measured values are provided by way of an analogue signal in the range of 0 V
… 10 V. The resolution is limited to 10 mV. The instrument which is connected to the
recorder output (e. g. X(t) chart recorder) should have an input resistance of no less
than 2.5 k
. The measured values are available through pins 1 and 4. The reference
potential (GND) is available at pins 2 and 3. The contacts are numbered from top to
bottom.
Tipp A diagramm showing pressures and leakrate versus voltage is attached in
the appendix.
Notice: The chart recorder outputs are electrically isolated from other plugs. If, in
spite of this, hum interference is apparent it is recommended to operate the
UL5000 and the chart recorder from the same mains phase. If this is not
possible, you must make sure that the frame ground of both instruments
is kept at the same potential.
2.3.2.5 RS232
This RS232 C interface Fig. 2-6 /5 is wired as data communication equipment (DCE)
and permits the connection of a personal computer (PC) for monitoring and data
logging. The connection is made through a 9 pin sub-D socket.
2.3.2.6 Remote Control RC1000 / Wireless Transmitter
This Remote Control interface Fig. 2-6 /6 is a serial interface to control the UL5000
by the RC1000. The RC1000 Remote Control can be connected via the wireless
transmitter or via an extension cable with a RJ45 plug. Refer to the RC1000
Technical Handbook for more information.
Pin Assignment
1 Analog 1
2 GND
3 GND
4 Analog 2
Pin Assignment
2 RXD
3 TXD
5 GND
7 RTS
8 CTS
Pin Assignment
2 +24V (fuse 0.8 A time lag)
3 0 V
4 RXD (intern. RS232)
5 TXD (intern. RS232)