INFICON MPG40x ATM to Ultra-High Vacuum Gauge - Manual (Page 7)

tina48e1-b (2008-10) MPG400-401.om
7
Adjustment
potentiometer at <10 -4 mbar
potentiometer at atmospheric pressure
Electrical connection
FCC68 female, 8 poles
Sensor cable 8 conductors plus shielding
Line length ≤50 m (8×0.14 mm²)
Operating voltage
≤3.3 kV
Operating current ≤500 µA
Grounding concept
→ ("Electrical Connection")
Vacuum connection-signal common connected via 10 k Ω
(max. voltage differential
with respect to safety
±50 V
with respect to accuracy ±10 V)
Supply common-signal common conducted separately
Materials exposed to vacuum
Vacuum connection
Measuring chamber
Feedthrough
Internal seals
MPG400
MPG401
Anode
Ignition aid
Pirani measuring tube
Pirani filament stainless steel
stainless steel
ceramic
FPM 75
Ag, Cu, soft solder (Sn, Ag)
Mo
stainless steel
Ni, Au
W
Mounting orientation
any
Internal volume
≈20 cm³
Pressure ≤10 bar (absolute)
limited to inert gases
Temperatures
Operation
MPG400
MPG401
+5 … +55 °C
+5 … +150 °C
(at flange in horizontal mounting orien-
tation, without magnetic shielding)
Bakeout +150 °C
(without magnetic shielding and
electronics unit)
Pirani filament +120 °C
Storage –40 °C … +65 °C
Relative humidity
≤80% at temperatures up to +31 °C
decreasing to 50% at +40 °C
Use indoors only
altitude up to 2000 m
Protection category IP 40