INFICON VSC150A absolute switch, passiv - Manual (Page 6)

1.2.2 SV Switching Amplifier
Mains supply 110 to 130 VAC
220 to 240 VAC
Mains frequency 50 / 60 Hz
Power consumption 3 VA
Output relay
Switching voltage, max. 250 V
Switching current, max. 5 A
Switching capacity, max. 500 VA
Response time 30 ms
Release time 7 ms
Control circuit 24 V / 10 mA
Ambient temperature, max. 50
°
C
Weight 0.36 kg
SV Switching amplifier Part Number 399-008
1.3 Technical Description
1.3.1 Design
The VSC150 is a diaphragm absolute pressure switch.
He can also be used as a differential pressure switch.
Within both pressure switches there is a sensing cham-
ber (1/2) and a reference chamber (1/5) separated by a
highly sensitive sealed diaphragm made of stainless
steel (1/3). A pin (1/6) in the reference chamber (1/5) is
led to the outside and insulated (1/7). The ground
connected diaphragm acts as the opposite contact.
This contact configuration is so designed that the dia-
phragm contacts the pin when it is unstressed, i. e. with
equal pressure in sensing and reference chamber.
1.3.2 Vacuum Switch Mode of Operation
For switch-point setting, the adjusting valve (1/4) bet-
ween sensing chamber (1/2) and reference chamber
(1/5) is opened and closed again when the desired swit-
ching pressure is attained. If the pressure in the sensing
chamber drops below the set reference pressure by
more than 0.1 mbar, the contact opens and energizes a
heavy-duty relay in the connected SV switching ampli-
fier.
6
6
tina42e1 (2005-03) VSC150.ga
tina42e1 (2005-03) VSC150.ga
1.2.2 SV Switching Amplifier
Mains supply 110 to 130 VAC
220 to 240 VAC
Mains frequency 50 / 60 Hz
Power consumption 3 VA
Output relay
Switching voltage, max. 250 V
Switching current, max. 5 A
Switching capacity, max. 500 VA
Response time 30 ms
Release time 7 ms
Control circuit 24 V / 10 mA
Ambient temperature, max. 50
°
C
Weight 0.36 kg
SV Switching amplifier Part Number 399-008
1.3 Technical Description
1.3.1 Design
The VSC150 is a diaphragm absolute pressure switch.
He can also be used as a differential pressure switch.
Within both pressure switches there is a sensing cham-
ber (1/2) and a reference chamber (1/5) separated by a
highly sensitive sealed diaphragm made of stainless
steel (1/3). A pin (1/6) in the reference chamber (1/5) is
led to the outside and insulated (1/7). The ground
connected diaphragm acts as the opposite contact.
This contact configuration is so designed that the dia-
phragm contacts the pin when it is unstressed, i. e. with
equal pressure in sensing and reference chamber.
1.3.2 Vacuum Switch Mode of Operation
For switch-point setting, the adjusting valve (1/4) bet-
ween sensing chamber (1/2) and reference chamber
(1/5) is opened and closed again when the desired swit-
ching pressure is attained. If the pressure in the sensing
chamber drops below the set reference pressure by
more than 0.1 mbar, the contact opens and energizes a
heavy-duty relay in the connected SV switching ampli-
fier.