Brooks Instrument GT 1305, Инструкция по установке и эксплуатации

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Installation and Operation Manual
X-VA-1305-1306-eng-eu
PN 541-C-029-AAG
April, 2008
Models GT 1305 & 1306
7
1-4 Optional Equipment
Screwed-in needle valves
Needle Valves in brass and 316 SS can be mounted to the instrument in inlet
or outlet fitting.
We strongly advise not to use solenoid-valves as these can cause pressure
shocks and damage to glass tubes.
Screwed-in flow controllers
Brooks self-contained flow controllers are constant differential regulators
with built-in flow control needle valve. The internal diaphragm-actuated
control valve is positioned by the incoming fluid pressure on one side of the
diaphragm, and outlet pr spring action on the other side. Variations
in the supply and/or discharge pressure disturb the balance of forces on the
diaphragm, causing the control valve to close or to open, thus maintaining
a fixed differential across the manual flow regulating valve. The series 8800
controllers are designed for all liquid and gas flows with constant downstream
pressure. Series 8900 controllers are designed for all liquids and gas flows
with constant upstream pressure.
Section 1 Introduction