INFICON PEG100 Medium to Ultra-High Vacuum Gauge - Manual (Page 11)

2.2.1 Power Supply
Warning The PEG100 may only be connected to
supply units or measuring instruments
which meet the requirements of mains
isolated extra-low voltages (PELV) and
VDE 0100.
The PEG100 is capable of operating off supply voltages
ranging from 14.5 V to 36 V. A supply voltage of 24 V DC
is recommended.
The power supply must be connected to Pin 1 (+) and
Pin 2 (power supply ground).
2.2.2 Switching on the High Tension
The high voltage may be switched on either through Pin
7 using negative logic or Pin 8 using positive logic.
In each case Pin 2 must be used as the reference poten-
tial.
Pin 7 switches the high voltage on when
- contact is established with Pin 2 or
- a voltage of less than 2.5 V is present with reference to
Pin 2.
Pin 7 switches the high voltage off when
- there is no contact with Pin 2 (open input) or
- a voltage greater than 4 V is present with reference to
Pin 2.
Pin 8 switches the high voltage on when
- contact is established with Pin 1 (supply voltage) or
- a voltage greater than 12 V is present with reference to
Pin 2.
Pin 8 switches the high voltage off when
- there is no contact with Pin 1 (open input) or
- a voltage of less than 7 V is present with reference to
Pin 2.
Operation of the PEG100 in the pressure range above
10
-2 mbar will cause the accumulation of contaminations
and will thus reduce service life. For this reason, the high
tension should only be switched on or off when the pres-
sure has dropped to the 10
-2 to 10 -3 mbar range.
The high tension may also be switched on or off directly
by the output signal provided by a Pirani Standard
Gauge (PSG) with switching point. Thus the PEG100
can be switched on or off automatically at a pressure of
approximately 5·10
-3 mbar.
2.2.3 Measurement Signal Output
The PEG100 supplies a defined output signal ranging
from 0.66 V to 10 V at Pin 3 with reference to Pin 5 which
is signal ground. For this also refer to Table 1 in Annex
11
tina14e1 (0106) PEG100.ga
11
tina14e1 (0106) PEG100.ga
2.2.1 Power Supply
Warning The PEG100 may only be connected to
supply units or measuring instruments
which meet the requirements of mains
isolated extra-low voltages (PELV) and
VDE 0100.
The PEG100 is capable of operating off supply voltages
ranging from 14.5 V to 36 V. A supply voltage of 24 V DC
is recommended.
The power supply must be connected to Pin 1 (+) and
Pin 2 (power supply ground).
2.2.2 Switching on the High Tension
The high voltage may be switched on either through Pin
7 using negative logic or Pin 8 using positive logic.
In each case Pin 2 must be used as the reference poten-
tial.
Pin 7 switches the high voltage on when
- contact is established with Pin 2 or
- a voltage of less than 2.5 V is present with reference to
Pin 2.
Pin 7 switches the high voltage off when
- there is no contact with Pin 2 (open input) or
- a voltage greater than 4 V is present with reference to
Pin 2.
Pin 8 switches the high voltage on when
- contact is established with Pin 1 (supply voltage) or
- a voltage greater than 12 V is present with reference to
Pin 2.
Pin 8 switches the high voltage off when
- there is no contact with Pin 1 (open input) or
- a voltage of less than 7 V is present with reference to
Pin 2.
Operation of the PEG100 in the pressure range above
10
-2 mbar will cause the accumulation of contaminations
and will thus reduce service life. For this reason, the high
tension should only be switched on or off when the pres-
sure has dropped to the 10
-2 to 10 -3 mbar range.
The high tension may also be switched on or off directly
by the output signal provided by a Pirani Standard
Gauge (PSG) with switching point. Thus the PEG100
can be switched on or off automatically at a pressure of
approximately 5·10
-3 mbar.
2.2.3 Measurement Signal Output
The PEG100 supplies a defined output signal ranging
from 0.66 V to 10 V at Pin 3 with reference to Pin 5 which
is signal ground. For this also refer to Table 1 in Annex