Gohastings.com DAVC-4 Instrukcja Użytkownika Pobierz pdf (Strona 10)

174-082010_Digital AVC Page 10 of 17

This signal is equal to an amplified tube millivolt signal. This signal will NOT be linearly proportional to

the indicated pressure. 1 volt (1.2 for DAVC4-1.2V) will correspond to a system pressure that is at least 1

order of magnitude less than the minimum detectable pressure. Increasing pressure will be indicated by a

decreasing voltage. The minimum detectable pressure is 0.2 millitorr for DAVC-5, 1 millitorr for DAVC-6

and 20 millitorr for DAVC-4.

The voltage signal can be mapped to a pressure value by using the following equation.

Where:

V = Voltage

P = pressure in Torr for DV4 & DV5 versions and millitorr for DV6

Parameters DV6 DV4

DAVC-4-1.2V

DV5

a -1623.22 -5.10184 -3.8115614 -0.25948

b -58.0442 -6.91233 -2.5905928 -42.23869

c -11732.2 -4.4943 -26.238798 -2.92598

d -130.397 -6.30995 -22.881611 -256.99510

e 13338.17 9.563177 24.483441 3.18016

1 dVbV

eVcVa

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17

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