Dwyer MM - Manual

Inlet Piping Run
It is good practice to approach the flowmeter inlet with as few elbows
and restrictions as possible. In every case the inlet piping should be at
least as large as the connection to the flowmeter. Length of inlet pip-
ing makes little difference for normal pressure fed flowmeters.
For flowmeters on vacuum air service the inlet piping should be as
short and open as possible. This will allow operation near atmospher-
ic pressure and thereby insure the accuracy of the device. (Note that
for vacuum air service the flow control valve if any, should be on the
discharge side of the flowmeter. Either the TMV unit or a separate in
line valve may be applied.)
Discharge Piping
As on the inlet, discharge piping should be at least as large as the
flowmeter connection. In addition, for pressure fed flowmeters on air
or gas service the discharge piping should be as short and open as
possible. This will allow operation of the flow tube at near atmospher-
ic pressure and insure the accuracy of the device.
Cleaning
The flow tube and flowmeter body can best be cleaned with a little
pure soap and water. Avoid liquid soaps which may have chlorinated
solvents in them and avoid prolonged immersion. Flush thoroughly
with clear water to remove all soap. When the instrument can no
longer be cleaned by this method it should be replaced.
Mini-Master ® Flowmeter
Instructions
Bulletin F-46
Mini-Master ® flowmeter mounts
easily from front of panel. Drill two 9 ⁄
32
"
or 5 ⁄
16
" dia. holes in panel on 2 1 ⁄
16
"
centers. Insert mounting connector
spuds. From rear, slide on the two
spring retainers (furnished) and push
on rubber or plastic tubing.
Connector at top, installed in panel,
has retainer and flexible tubing in place.
Connector at bottom shows alternative
connection with metal or rigid plastic
tubing, using a double compression
nylon tube union (as Dwyer Instru-
ments, Inc. Part No. A-328).
DWYER INSTRUMENTS INC.
P.O. Box 373 • Michigan City, IN 46361 U.S.A.
Phone: 219/879-8000 • Fax: 219/872-9057
e-mail: [email protected] • www.dwyer-inst.com
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