pg. 27
Analog output calibration = 2 (Edwards APG-100 emulation)
The APG-L emulation provides a log linear output of 1 VDC/mbar decade.
P
Torr
= 10
(Vout – 6.125)
V
out
= log
10
(P
Torr
)+6.125
P
mbar
= 10
(Vout – 6)
V
out
= log
10
(P
mbar
)+6
P
Pascal
= 10
(Vout – 4)
V
out
= log
10
(P
Pascal
)+4
Torr
mbar
Pascal
Vout
7.50E-5
1.00E-4
1.00E-2
2.00
7.50E-4
1.00E-3
1.00E-1
3.00
7.50E-3
1.00E-2
1.00
4.00
7.50E-2
1.00E-1
10.0
5.00
7.50E-1
1.00
100
6.00
7.50
10.0
1.000
7.00
75.0
100
10.000
8.00
750
1.000
100.000
9.00
Analog output calibration = 3 (Edwards WRG emulation)
The WRG emulation covers a wider measuring range than supported by the 910 range. The 910 provides
only values above 1.00E-5 Torr.
P
Torr
= 10
(1.5× Vout -12.125)
V
out
= (log
10
(P
Torr
)+12.125) / 1.5
P
mbar
= 10
(1.5× Vout -12)
V
out
= (log
10
(P
mbar
)+12) / 1.5
P
Pascal
= 10
(1.5× Vout -10)
V
out
= (log
10
(P
Pascal
)+10 ) / 1.5
Torr
mbar
Pascal
Vout
1.00E-8
1.33E-8
1.33E-6
2.75
2.37E-8
3.16E-8
3.16E-6
3.00
7.50E-7
1.00E-6
1.00E-4
4.00
2.37E-5
3.16E-5
3.16E-2
5.00
7.50E-4
1.00E-3
1.00E-1
6.00
2.37E-2
3.16E-2
3.16
7.00
7.50E-1
1.00
100
8.00
2.37
31.6
3.160
9.00
750.0
1.000
100.000
10.00
