Brooks Instrument 5851EM - Manual (Page 18)

2-4
Brooks ® Models 5965, 5851EM
Section 2 Installation Installation and Operation Manual
X-TMF-5965-5851EM-MFC-eng
Part Number: 541B122AAG
September, 2009
2-8 In-Line Filter
It is recommended that an in-line filter be installed upstream from the
controller to prevent the possibility of any foreign material entering the
flow sensor or control valve. The filtering element should be replaced
periodically or ultrasonically cleaned.
Maximum Flow Rate Recommended Filter
10 to 30 slpm 15 micron
Above 30 slpm 30 micron
2-9 Installation
Prior to installation, make certain all piping is clean and free of
obstructions, for tubing installations. Install the piping in such a manner
that permits easy access to the instrument if it needs to be removed for
cleaning or test bench troubleshooting. For surface mount (downported)
devices verify that the seal cavities are clean and free of lateral
scratches.
When installing the controller, care should be taken that no
foreign materials enter the inlet or outlet of the instrument. Do not
remove the protective end caps until time of installation.
CAUTION
Recommended installation procedures:
a. The Models 5965 and 5851EM should be located in a clean, dry
atmosphere relatively free from shock and vibration.
b. Leave sufficient room for access to the electrical components, span
and zero potentiometers.
c. Install in such a manner that permits easy removal if the instrument
requires servicing.
When used with a reactive (sometimes toxic gas) contamination
or corrosion may occur as a result of plumbing leaks or improper
purging. Plumbing should be checked carefully for leaks and the
instrument purged with clean, dry N
2
before use.
CAUTION
d. The Models 5965 and 5851EM Mass Flow Controller can be
installed in any position. However, mounting in orientations other
than the original factory calibration (see calibration data sheet) can
result in a 0.5% maximum full scale shift after re-zeroing.
Table 2-1 Recommended Filter Size