Edwards PGC202, Instruction Manual

Page: 28 / 64

D0300041001EN - Installation
Page 18
The connection IG ( Figure 5 ) allows the connection of an Extractor or Bayard-Alpert gauge
head ( See Connectable gauge heads ).
Control signals
The control signals are supplied through a 7-way Metalock Bantam connector
(
Figure 5 and 6 ).
Figure 6 Connection for the IG gauge head (Metalock Bantam UTG0187SVDEU)
Measurement signal
The measurement signal (ion current) is transferred via a coaxial cable to a BNC connector on
the rear of the PGC202 (see
Figure 5 item 3).
Connecting:

Connect the IG gauge head through the corresponding connecting cable to the
connection IG on the rear of the PGC202.
Analog output and external control (analog output / extern control)
The Analog Output / Extern Control connection ( Figures 5 and 7 ) provides the connections of
the analog outputs for the signals of the individual measurement channels as well as the
inputs for externally controlling the IG gauge.
WARNING:
If during operation the IG suffers a malfunction then a live voltage may be present at the
gauge head measurement signal connection (
Figure 5 , item 3).
Affix the touch protection component to the BNC plug on the IG cable after it is connected
to the PGC202 and before the PGC202 is switched on.
The touch protection component is supplied together with the gauge head cable.
Pin assignment: Inside conductor: Ion current
Outside conductor: Shield
1 Filament 5 Gauge head identification
2 Filament 6 Gauge head identification
3 Anode 7 Ground
4 Reflector