Dwyer TVF - Manual

Series TVF Total View Industrial Flowmeters
Specifications - Installation and Operating Instructions
Bulletin F-22
The Series TVF Total View Industrial Flowmeters are
economically priced, tough, simple and accurate meters for
water, oils, coolants, compressed gases and other industrial
applications. The flowmeters have a full-scale accuracy of ±2%
and can be disassembled quickly without the meter being
removed from the pipeline for easy cleaning. The TVFS is
constructed of T-316 stainless steel and features polysulphone
sight tubes. The Series Total View Industrial Flowmeters are
available with standard 3/4˝ and 1-1/2˝ female NPT connections.
The easy to read flowmeters provide 360° rotation of scale on
plastic sight tube models.
SAFETY PRECAUTIONS
Personnel safety should be considered before pressurizing and
operating the system. There are numerous possibilities for error
in system operation and maintenance as well as component
installation. Because human eyes must necessarily come into
close proximity with the flowmeter to read it, it is recommended
that safety shielding be used with the meter along with safety
glasses. The panel mount kit (available for most standard
models) also provides shielding. Another protective measure is
to use a sheet of transparent, high-impact material in a broad
area in front of the meter. If hazardous, toxic, or flammable fluids
are being metered, recommended safeguards should include
methods to protect personnel from splash or rebound. A method
of quick, safe removal of dangerous fluids should also be
included.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Service: Compatible gases or liquids.
Wetted Materials: Body: T-316 SS; O-rings: Buna-N; Sight
Tube: Polysulfone.
Temperature Limits: See “Operating Limits” Table.
Pressure Limits: See “Operating Limits” Table.
Accuracy: ±2% FS.
Repeatability: ±1/4% of indicated flow rate.
Process Connections: 3/4˝ and 1-1/2˝ female NPT.
Scale Length: 3.2˝ (8 cm) for 3/4˝ NPT connection, 5.2˝ (13 cm)
for 1-1/2˝ NPT connection.
Weight: 4 lbs (1.8 kg) for 3/4˝, and 12 lbs (5.5 kg) for 1-1/2˝.
RECOMMENDED PIPING: Series TVF Flowmeters generally
have no special straight run or other piping requirements. Inlet
piping should be the same size as the meter connection. Some
effect on meter accuracy may occur at high flow velocities if inlet
piping guidelines are violated. Please refer to the table on the
next page. When installing on different size pipe, use standard
pipe adapters and come into the meter inlet with a nipple 8
diameters long of the same size for greatest accuracy. Control
valves should be mounted on the outlet side of the meter. The
use of a three valve manifold around the meter is suggested (per
Figures 2 & 3) as it allows uninterrupted process flow while the
meter is being cleaned.
TVFS
REMOVAL
CLEARANCE
G
IN
OUT
A
B
D
C
CONNECTIONS
E
F
A
9.36
15.22 B
2.81
4.53 C
2.68
3.71 D
4.00
5.70 E
1.35
2.48 F
2.72
3.95 G
3.00
5.00 Female NPT
3/4˝
1-1/2˝ Material
ST. STL.
ST. STL.