Pfeiffer TPG 261 - Page 35

BG 5195 BEN / A (2011-05) TPG261.oi 35
Ö Press key <1 s:
The value is increased/
decreased by 1 increment.
Press key >1 s:
The value is increased/
decreased continuously.
We recommend setting the threshold ½ decade
above the lower or ½ below the upper threshold
limit.
Value
The lower switching threshold
(Setpoint low) defines the pres-
sure at which the switching func-
tion is activated when the pres-
sure is dropping.
e.g.:
Ö Gauge dependent (
→ table).
If another gauge type is con-
nected, the TPG 261 automati-
cally adjusts the switching
threshold if required.
lower threshold limit
upper
threshold limit
1×10
-2
1000
5×10
-4 *)
1×10
-9
1×10
-6
10005×10
-10
all values in mbar, CAL=1
1×10
-2
1×10
-11
10001×10
-9
1500
F.S. / 1000 F.S.
*)
5×10
-5
mbar, if PrE is activated (→  46)
Editing the threshold
value
Limits of the lower
switching thresholds