Introduction and Description
Varian cannot guarantee compliance with FCC regulations for radiated emissions unless all external
wiring is shielded. (See page iii)
HFIG Gauge (BA2, BA2c, BA, UHV, UHV2c models)
Minimum pressure
1.3 x 10
-7
Pa/1 x 10
-9
Torr (BA)
capability
5.3 x 10
-9
Pa/4 x 10
-11
Torr (UHV)
Maximum pressure
1.3 x 10
-1
Pa /1 x 10
-3
Torr (standard BA and UHV)
capability
1.3 x 10
1
Pa /1 x 10
-1
Torr (broad-range BA)
Degas (optional)
Resistive, 1 hour timeout
E-beam (UHV), 15 minute timeout
Sensitivity – Adjustable from
1330/Pa (10/Torr) standard BA default value
1.33/Pa to 1.31 x 10
4/
Pa
1064/Pa (8/Torr) broad range BA default value
(1/Torr to 99/Torr)
3325/Pa (25/Torr) UHV default value
Emission current
4 mA (standard BA and UHV)
(Adjustable from
0.1 mA (broad range BA)
0.1 mA to 9.9 mA)
Analog output
1 V/decade
0 V for “OFF”, “- -”, and “xxE” conditions
Optional Linear Recorder Out available
Auto-on (standard)
available on BA2, BA2c, and UHV2c configurations only,
set to TC1 only
Cold Cathode Gauge (CC2 CC2c, IMG, IMG2c models)
Minimum pressure
1.3 x 10
-6
Pa /1 x 10
-8
Torr (CC models)
capability
5.3 x 10
-9
Pa /4 x 10
-11
Torr (IMG models)
Maximum pressure
1.3 Pa/1 x 10
-2
Torr
capability
Operating voltage
–2 kV (CC models)
+3 kV (IMG models)
Sensitivity – Adjustable from
(5 A/Torr) CC default value
133A/Pa to 1.31 x 10
4
A/Pa
(2 A/Torr) IMG default value
(1 A/Torr to 99 A/Torr)
Analog output
1 V/decade
Optional Linear Recorder Out available
Auto-on (standard)
available on CC2, CC2c, IMG2c configurations only, set to TC1 only
Thermocouple and Convectorr Gauge (BA2, CC2, BA2c, CC2c, UHV2c, IMG2c models)
Minimum pressure
1.3 x 10
-1
Pa /1 x 10
-3
Torr
capability
Maximum rated
266 Pa/2 Torr (TC models)
pressure capability
1.3 x 10
5
Pa /1000 Torr (ConvecTorr models)
1-2
