VS Series Helium Mass Spectrometer Leak Detectors
DRAFT 4/23/15
1-27
The rear panel of the leak detector (Model VS PR02 and PD03) is shown in Figure 1-17. The
optional Wireless remote control and I/O PCB is not installed.
Figure 1-17 Rear Panel (with Discrete I/O PCB)
Oil Drain For the internal mechanical vacuum pump (PR02 only, not shown).
Glass Window Oil level sight glass reading (PR02 only, not shown).
➀ Exhaust A barbed hose fitting (OD = 12.57 mm) for exhaust of the internal
mechanical vacuum pump.
➁ Serial Connector A 9-pin male D-type connector to interface with an external PC via
RS-232 type communications protocol for system diagnostic or
control
A detailed summary of information related to serial communication
is provided in
Section A “Communications Protocol” on page A-1.
➃ Power Entry
Module
Provides supply power, overcurrent and EMI protection for the leak
detector. The Power Entry Module consists of:
❑ Power Input Connector - An IEC/EN60320/C20 standard,
three-prong grounded inlet connector.
❑ Power Switch (I/O) - A 20A rocker type Power
Switch/Thermal Circuit Breaker.
❑ 20 A EMC line filter.
➄ Vacuum Pump
Breaker
A 6 A Thermal Circuit Breaker for the internal mechanical pump.
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