INFICON PCG55x ATM to Medium Vacuum Gauge - Manual (Page 12)

12 tina56e1-d (2014-01)
Mechanical relays switching functions SP1,
SP2, ATM
Setting range (N
2
) 5.0×10
-5
… 1500 mbar
Hysteresis
1)
10% of threshold
Switching characteristics
1)
Low Trip Point
Type 1 floating contact (n.o.) per
switching function
Contact rating <30 V (ac) / (dc), ≤1 A
resistive
closed LED lit solid
open LED off
Switching time <30 ms
Diagnostic port Jack connector 2.5 mm,
3-pin
Supply
DANGER
The gauge may only be connected to power sup-
plies, instruments, or control devices that conform
to the requirements of a grounded protective extra-
low voltage (SELV) and limited power source
(LPS), Class 2. The connection to the gauge has to
be fused.
2)
Supply voltage
at the gauge
Class 2 / LPS
+15 … +30 V (dc)
Ripple ≤1 V
pp
Power consumption
without fieldbus
DeviceNet
Profibus
≤2.5 W
≤3 W
≤3 W
Fuse to be connected
2)
1 AT
2)
INFICON controllers fulfill this requirement.