Vici 500 Dynacalibrator Uživatelský manuál stáhnout pdf (Strana 7)

Introduction

Referring again to Figure 1, note that the dilution stream passes through

scrubber #3 and feeds into differential pressure regulator DPR3. The Model 500

contains a dilution ﬂo

w control valve and rotometer, plus a rotometer for SPAN 1

and SPAN 2 carrier ﬂows. When energized, solenoid control valve SV1 opens to

route carrier 1 ﬂow to the mixing tee. Differential pressure regulator DPR1 main-

tains a ﬁxed 3.2 psi pressure differential across the selected ﬂow control valve

and meter. The ﬂow rate through the selected ﬂowmeter is then a function of this

ﬁxed pressure differential and the carrier ﬂow control oriﬁce FR1. The desired

dilution ﬂow, set using FCV2, is mixed with any selected permeation chamber

output to provide a ﬁnal output concentration.

Figure 2: Model 500 output ﬂow conﬁgurations

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Vici 500 Dynacalibrator Uživatelský manuál Strana 7

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