Dwyer TVF - Manual (Page 2)

MAXIMUM FLOWS (WITHOUT EFFECTING ACCURACY)
FOR UNDERSIZED PIPES CONNECTED DIRECTLY TO MEM FLOWMETER INLETS
PIPE NPS
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
4
6
DATA
(ID)
2
0.132
0.243
0.387
0.679
1.100
1.904
2.592
4.272
6.096
9.413
16.209
36.784
MAX. *
GPM LIQ.
1.72
2.98
4.74
8.31
13.47
23.32
31.74
52.29
74.56
115.2
198.4
450.0
ATMOS
0.864
1.59
2.53
4.44
7.20
12.5
17.0
28.0
39.9
61.6
106
241 50 PSIG
3.80
7.00
11.1
19.5
31.7
58.8
74.6
123
176
271
467
1059 100 PSIG
6.74
12.4
19.8
34.7
56.1
97.2
132
218
311
480
827
1878
MAX. SCFM AIR @ †
200 PSIG
12.6
23.2
37.2
64.9
105
182
248
408
582
804
1549
3514
* Data per Cameron Hydraulic Data. Based on 5 FPS max. liquid velocity having no effect
on Series TVF Flowmeter accuracy if the inlet pipe is smaller than the meter connections.
† SCFM = 0.445 x (psig + 14.7) x (ID)2. Based on 20 FPS max. air velocity having no effect
on Series TVF Flowmeter accuracy if the inlet pipe is smaller than the meter connections.
TVF FLOWMETER
MAIN
PROCESS
LINE
BY-PASS
VALVE
FLOW
FIGURE 2: TYPICAL INSTALLATION-
VERTICAL LINE FOR LIQUID, GAS, OR VAPOR
F
SHUT-OFF
VALVES (2)
FIGURE 3: TYPICAL INSTALLATION-
HORIZONTAL LINE FOR LIQUID, GAS, OR VAPOR
SHUT-OFF
VALVES (2)
TVF FLOWMETER
BY-PASS VALVE
FLOW
MAIN PROCESS LINE
OPERATING LIMITS FOR SERIES TVF FLOWMETERS
Maximum Non-Shock Working Pressure, PSIG @ °F (bar @ °C)
BODY SIZE AND
DESCRIPTION
3/4˝ Stainless and
Polysulfone
1-1/2˝ Stainless and
Polysulfone 70ºF
(21ºC)
300
(20.6)
180
(12.4) 80ºF
(26ºC)
300
(20.6)
180
(12.4) 100ºF
(37ºC)
300
(20.6)
180
(12.4) 120ºF
(48ºC)
300
(20.6)
180
(12.4) 140ºF
(60ºC)
300
(20.6)
180
(12.4) 200ºF
(93ºC)
300
(20.6)
180
(12.4) 250ºF
(121ºC)
250
(17.2)
145
(10.0) 300ºF
(148ºC)
115
(7.9)
70
(4.8)
* Operating limits given are based on water or air. For more severe service, corrosives, 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 application conditions cannot be foreseen. Thus, data is offered only as a guide. It
in no way constitutes a specific recommendation or warranty expressed or implied. The
operating limits should not be exceeded under any circumstances. If there is any doubt
regarding the safe operating limit for a specific application, please consult the factory prior
to installation and pressurization of the flow device.