Varian sentorr Instruction Manual page 11

A single pressure display features four digits, two for the mantissa and two for the exponent. There is a
pressure readout for each gauge, with the Bayard-Alpert or Cold Cathode display labeled "IG" and the
two thermocouple or ConvecTorr displays labeled "TC1" and "TC2" , as applicable to the senTorr model.
Label
IG
TC1
TC2
The column of red LED legends indicates the following operational states.
Degas
Emis On ion gauge is on
Auto-On
mBar
Torr
Cal
Hyst
The keypad is a sealed membrane-type, with tactile feedback. There are eleven keys, some of which
are dual function.
To determine the ordering number, select the desired configuration as follows:
Basic Configurations
One Ion Gauge
BA – Bayard-Alpert (563, 564, 571, 572, 580) . . . . . L 9 1 2 0 3 0 1 X X 0 X
CC – Standard Cold Cathode (524, 525) . . . . . . . . . L 9 1 2 1 3 0 1 X X 0 X
UHV – Ultra-High-Vacuum Nude Gauge (UHV-24) . . L 9 1 1 0 3 0 1 X X 0 X
IMG – Ultra-High-Vacuum Inverted Magnetron . . . . . L 9 1 1 1 3 0 1 X X 0 X
One Ion Gauge, Two Thermocouple Gauges
BA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L 9 1 2 0 3 0 2 X X 0 X
CC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L 9 1 2 1 3 0 2 X X 0 X
One Ion Gauge, Two ConvecTorr Gauges
BA2c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L 9 1 2 0 3 0 3 X X 0 X
CC2c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L 9 1 2 1 3 0 3 X X 0 X
UHV2c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L 9 1 1 0 3 0 3 X X 0 X
IMG2c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L 9 1 1 1 3 0 3 X X 0 X
Setpoint Options
No Setpoints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Degas Options
No Degas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
Degas (BA resistive, UHV E-Beam) . . . . . . . . . . . . . 1
Communications Options
No Communications . . . . . . . . . . . . . . . . . . . . . . . . . 0
RS-232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
RS-232 Fiber Optic. . . . . . . . . . . . . . . . . . . . . . . . . . . 2
RS-422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
RS-485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction and Description
pressure displayed
Bayard-Alpert or Cold Cathode
(depending on the model)
Thermocouple one or ConvecTorr one
Thermocouple two or ConvecTorr two
hot filament ion gauge is degassing
auto-on feature is programmed
pressure measurements units are mBar
pressure measurement units are Torr
calibrating thermocouples or ConvecTorrs
programming set point hysteresis
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