INFICON BCG450 ATM to Ultra-High Vacuum Triple Gauge - Manual (Page 29)

tina40e1-b (2011-04)
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The emission control mode function defines the rules by which the emission of the
gauge is switched on and off.
The manual mode feature has a positive effect on gauge live time, mainly in pro-
cess situations where the process chamber has to be vented frequently.
Emission Control Mode Description
• Automatic (AUTO) By default, the automatic mode is active and the emis-
sion is switched on and off automatically by the gauge.
However, the emission will only be switched on if the
pressure falls below "Switching on pressure" (
→ 8).
If the pressure rises above the "Switching off pressure"
(
→ 8) the emission is switched off. However, the
user can switch off the emission any time via the in-
terfaces (
→ below).
If the emission is switched off manually while it is in the
on state, it is switched on again only after pressure has
exeeded "Switching off pressure" and subsequently
fallen below "Switching on pressure".
• Manual (MAN) In manual mode, the emission can be switched on and
off by the user. However, switching on the emission is
only possible if the pressure is below "Switching on
pressure" (
→ 8). If the pressure rises above the
"Switching off pressure" ( → 8) while the emission is
on, the emission will be switched off by the gauge.
The emission control mode parameter is only accessible via the serial
interfaces and described in the respective sections ( → 33, [1] and
[2]).
(Switching the emission on/off via RS232 → 37)
4.5 Emission Control Mode
General