INFICON VGC403 Three-Channel Measurement and Control Unit - Manual (Page 22)

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tinb07e1-e 2011-07 Vacuum Gauge Controller
5.1.2 Configuring switching functions
Prerequisite: The parameter group SP-P is selected
1 Press the PARA button to select the required
parameter
• The name and the value of the parameter are
displayed
2 Use the CH button to assign the switching function
to a channel
• The switching functions can be assigned to the
channels any way
• The two threshold values of the switching func-
tion are always assigned to the same channel
3 Use the arrow buttons to modify the threshold
value
• The value of the parameter is changed
4 Repeat the steps 1 to 3 to change further parame-
ters of the same parameter group
5.1.3 Adjustment range
Adjustment range of the lower threshold value
The lower threshold value of a switching function can be
set in the following pressure range:
Tab. 5-1 Adjustment range of the lower threshold values
*) 2 × 10 -4 mbar if PrE is activated (see Chapter 5.2.12,  26)
Adjustment range of the upper threshold value
The upper threshold value of a switching function can be
set in the following pressure ranges:
Tab. 5-2 Adjustment range of the upper threshold values
This means that the hysteresis amounts to 10 % of the
lower threshold value (logarithmic sensors) or to 1 % of
the full-scale range (linear sensors) at least. If another
sensor type is connected to a channel, the respective
threshold values will be adjusted automatically if neces-
sary.
Sensor
SP-L min.
[mbar]
SP-L max.
[mbar]
PSG 2 Ч 10 -3
*) 5 Ч 10 2
PCG 2 Ч 10 -3
*) 1.5 Ч 10 3
PEG 1 Ч 10 -9
1 Ч 10 -2
MPG 5 Ч 10 -9
5 Ч 10 2
CDG/CDG d FS/1000 FS
bPG/bPG2 1 Ч 10 -8
5 Ч 10 2
HPG 1 Ч 10 -6 1 Ч 10 3
bCG 1 Ч 10 -8 1.5 Ч 10 3
Sensor
SP-H min.
[mbar]
SP-H max.
[mbar]
PSG 1.1 SP-L 5 × 10 2
PCG 1.1 SP-L 1.5 × 10 3
PEG 1.1 SP-L 1 × 10 -2
MPG 1.1 SP-L 5 × 10 2
CDG/CDG d SP-L + 0.01 FS FS
bPG/bPG2 1.1 SP-L 5 × 10 2
HPG 1.1 SP-L 1 × 10 3
bCG 1.1 SP-L 1.5 Ч 10 3