Dwyer SSM - Manual (Page 6)

RepLaceMent paRtS
Under proper care, there should be no need to stock replacement parts.
If the service or environment is quite harsh, or frequent meter
disassembly dictated, a spare O-ring may be desirable.
Otherwise, parts only need to be replaced if damaged. Any visible
damage to the entire surface of the O-ring or sight tube (particularly from
the bottom edge) indicates need for replacement. To insure accuracy, the
inside surface of the meter core tube, slot edges, and OD of the float
piston should be free of nicks, chips, with no visible erosion of any
surfaces. If abrasive particles are suspended in the meter fluid, it may be
desirable to keep replacement core tube/float assemblies on hand
(Dwyer Instruments, Inc. may also be able to recommend a more
abrasive-resistant construction).
To order parts, include the model and serial number of the units involved,
and description of the part ordered. If converting the meter to a new
application, in addition to the model and serial numbers, SEND DWYER
INSTRUMENTS, INC. COMPLETE APPLICATION DATA INCLUDING
FLUID, MAXIMUM FLOW RATE, MAXIMUM AND OPERATING
PRESSURES
AND TEMPERATURES, AND APPLICATION
PARTICULARS OR FLUID CHARACTERISTICS. This information is
essential for Dwyer Instruments, Inc. to provide proper items, and verify
that the new application is within the operating limits of the flowmeter.
teMpeRatURe VS. pReSSURe, opeRatinG LiMitS, “SeRieS SSM” aLL MetaL fLoWMeteRS*
MeteR SiZe
& MateRiaL
6 (3/4” NPT)-Stainless
12 (1-1/2” NPT)-Stainless MaXiMUM non-SHocK WoRKinG pReSSURe, pSiG @ ˚f
0˚f
1000
800 350˚f †
990
790 400˚f †
970
780 450˚f †
950
770 500˚f †
930
760 600˚f †
900
750 300˚f †
1000
800 70˚f
1000
800
*
†
OPERATING LIMITS GIVEN ARE BASED ON WATER OR AIR. FOR MORE SEVERE
SERVICE, CORROSIVE, AND OTHER MEDIA AND/OR ENVIRONMENTAL FACTORS, AN
ADDITIONAL CORRECTION FACTOR DOWN-RATING THESE LIMITS MAY BE REQUIRED.
LIMITS ARE BASED ON TESTING AND PRACTICAL EXPERIENCE. POSSIBLE EXTREME
APPLICATIONS CONDITIONS CANNOT BE FORESEEN. THUS, DATA OFFERED ONLY AS
A GUIDE. IT IN NO WAY CONSTITUTES A SPECIFIC RECOMMENDATION OR WARRANTY
EXPRESSED OR IMPLIED.
OPERATING TEMPERATURES ABOVE 300˚F REQUIRE SPECIAL HIGH TEMPERATURE
MODIFICATIONS.