Agilent Technologies IMG-500, Manual

Page: 12 / 34

Compact Cold Cathode Gauge IMG-500
12
Power consumption
≤2 W
Fuse
1)
≤1 AT
Voltage at the supply unit with
maximum cable length 16
… 30 VDC
(ripple
≤
1 V
pp
)
2)
Adjustment the gauge is adjusted at the
factory and requires no
maintenance.
Electrical connection FCC68 socket, 8-pin
Sensor cable 8-pin, shielded
Line length
≤50 m
(8

0.14 mm²)
Operating voltage
≤3.3 kV
Operating current
≤500 µA
Grounding concept

"Power Connection"
Vacuum connection
–measuring
common
connected via 10 k

(max.
voltage differential with
respect to safety ±50 V
accuracy ±10 V)
Supply common
– signal common conducted separately;
differential measurement
recommended for cable
lengths
≥10 m
Materials on the vacuum side
Vacuum connection
Measurement chamber
Feedthrough isolation
Internal seal
Anode
Ignition aid stainless steel
stainless steel
ceramic (Al
2
O
3
)
FPM 75
Mo
stainless steel
Internal volume

20 cm³
Pressure
≤10 bar (absolute),
limited to inert gases
2)
The minimum voltage of the power supply unit must be increased
proportionally to the length of the sensor cable.