Brooks Instrument 1100 Series - Manual (Page 21)

3-1
Installation and Operation Manual
X-VA-1110-1140-eng
Part Number: 541B040AAG
September, 2012
Brooks ® 1110 and 1140 Series
Section 3 Operation
3-1 General
After the flowmeter has been properly installed in the process, it is ready
for operation. When initiating flow, slowly open the valve to avoid a flow
surge.Bypass is a help in bringing the flow on smoothly. Avoid starting a
pump to supply the flowmeter without the use of a valve upstream of the
flowmeter.
3-2 Operational Check
Prior to initial start-up and each time the flowmeter is reassembled, the
zero alignment should be checked. If the zero line on the tube is aligned
with the zero line on the scale, the flowmeter is ready for operation. If the
zero lines are not aligned, loosen the screws securing the scale and move
it until the marks are in alignment. Then tighten the screws.
3-3 Operating Instructions
GLASS TUBE
EXPLOSION
HAZARD
WARNING
Plastic protective sleeve must remain over glass
tube. (Meter sizes 7 -13 only)
Fasten meter windows securely.
Do not operate above pressure and temperature
limits.
Avoid pressure and flow surges.
Do not service or repair while pressurized.
Read and understand instruction manual.
Failure to comply could result in serious personal
injury or property damage.