Brooks Instrument GT1000 - Manual (Page 24)

3-2
Section 3 Operation
Model GT1000 Series
Installation and Operation Manual
X-VA-GT1000-eng
Part Number: 541B078AAG
March, 2014
Figure 3-1 Typical Flowmeter Piping Configuration
A - Inlet Valve B - Outlet Valve C - Bypass Valve
D - Control Valve E - Drain Valve
HORIZONTAL
LINE
D A
E
C
VERTICAL
LINE
B
B
A
E
FLOWMETER
C
D
FLOWMETER
To initiate flow through a flowmeter using bypass piping, refer to Figure 3-1.
1. Close flowmeter inlet valve (A) and outlet valve(B).
2. Fully open bypass valve (C) and slightly open control valve (D).
3. Initiate process flow. When flow has stabilized, fully open outlet valve (B),
then slowly open inlet valve (A) .
4. Close bypass valve (C).
5. Regulate process flow using control valve (D).
6. If meter is left in bypass configuration, open drain valve (E) to prevent tube
damage caused by thermal expansion of the process liquid.