Dwyer Instruments SERIES MTF Catalog Page
Series
[H]
[A]
[W]
1/2
[12.70]
[O]
1
/8 FEMALE NPT
9/16-18
[14.29]
35/64
[13.97]
1-27/32
[46.99]
OPEN
1-1/8
[28.70]
M
Multitube Flow Systems
TF
Customize to Fit Application, 65 mm or 150 mm Variable
Area Flow Tubes
ustomize flow systems to meet application requirements. Systems can be
C
onfigured with up to six different flow tubes with various flow capacities and flow
c
atterns. The Series MTF Multitube Flow Systems are ideal for multichannel
p
metering, mixing, or monitoring applications.
FLOW
To customize your flow system:
1) Determine the flow pattern required for the application (see below).
2) Select a 65 mm or 150 mm frame (next page), along with the appropriate number
of tubes required, flow pattern, and wetted parts. Choose a 150 mm Gas
Proportioner Frame (Series MTP) to blend 2 or 3 gases at required concentrations.
Gas proportioner frames are typically used at 50 psi.
3) Choose the appropriate 65 mm or 150 mm correlated flow tubes (next page), for
air or water.
4) Select a valve cartridge if desired that matches the range of the flow tube (next
page).
Isolated parallel channels
Flowmeters, Variable Area
Dimensions
3 tubes
3-1/4
[82.55]
3-1/4
[82.55]
DIM “W”
4 tubes
4-1/4
[107.95]
4-1/4
[107.95]
5 tubes
5-1/4
[133.35]
5-1/4
[133.35]
6 tubes
6-1/4
[158.75]
6-1/4
[158.75]
DIM “A”
Scale
Length
65 mm
150 mm
SPECIFICATIONS
Scales: Universal 65 mm or 150 mm scales with correlation charts.
Accuracy: ±2% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute).
Repeatability: ±0.25% of scale reading.
Turn-down Ratio: 10:1, 20:1 with combinations of two floats installed in meter.
Maximum Operating Pressure: 200 psig (13.8 bar).
Maximum Operating Temperature: 250°F (121°C).
Mounting: Vertical.
Connection: 1/8˝ female NPT.
Flowtube: Borosilicate glass.
Float: 316 SS or black glass as indicated.
Float Stops: PTFE.
End Fittings: Anodized aluminum or 316 SS.
Front Shield: Polycarbonate.
Side Panels: Black, anodized aluminum.
O-rings: Buna-N on aluminum models and fluoroelastomer on stainless steel models.
DIM “H”
5-1/2
[139.70]
9-13/16
[249.25]
DIM “O”
4-1/2
[114.30]
8-13/16
[223.85]
1 tube
1-1/4
[31.75]
1-1/4
[31.75]
2 tubes
2-1/4
[57.15]
2-1/4
[57.15]
Common exhaust with
parallel inlets
Common inlet with
parallel exhausts
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
5 mm Frames
6
etted Parts
odel
M
TF-1621
M
TF-2621
M
MTF-1622
MTF-2622
MTF-1631
TF-2631
M
TF-1632
M
TF-2632
M
TF-1641
M
MTF-2641
MTF-1642
MTF-2642
TF-1651
M
TF-2651
M
TF-1652
M
MTF-2652
MTF-1661
MTF-2661
MTF-1662
TF-2662
M
attern
P
solated
I
solated
I
Common
Common
Isolated
solated
I
ommon
C
ommon
C
solated
I
Isolated
Common
Common
solated
I
solated
I
ommon
C
Common
Isolated
Isolated
Common
ommon
C
ube Capacity
T
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
6
6
6
6
W
luminum
A
16 SS
3
Aluminum
316 SS
Aluminum
16 SS
3
luminum
A
16 SS
3
luminum
A
316 SS
Aluminum
316 SS
luminum
A
16 SS
3
luminum
A
316 SS
Aluminum
316 SS
Aluminum
16 SS
3
*Flow rates are given for standard pressure and
emperature 70°F (21°C) @ 760 mm Hg.
t
5 mm Direct Reading Flow Tubes
6
ax. Flow Rate Air
M
odel
M
F
F
FT-746
FT-748
FT-750
F
F
F
T-741
T-743
T-752
T-753
T-754
60 SCFM
.
.2 SCFH
2
6.0 SCFH
10.0 SCFH
18.0 SCFH
5.0 SCFH
2
0.0 SCFH
5
0.0 SCFH
9
65 mm Correlated Flow Tubes
Max. Flow Rate (mL/min)*
Model
T-61
F
T-62
F
T-63
F
FT-64
FT-67
FT-68
FT-611
T-612
F
T-613
F
T-614
F
FT-617
FT-618
T-621
F
T-622
F
Air
6
7
1
9
4
145
202
522
1249
520
2
040
2
990
3
6318
12058
3169
2
2094
4
Water
.07
0
.28
0
.55
0
2.38
2.60
12.0
27
1
7
0
4
08
1
147
364
22
5
261
1
loat
F
arboloy
C
lass
G
Glass
316 SS
316 SS
16 SS
3
16 SS
3
16 SS
3
Float
G
3
G
316 SS
Glass
316 SS
Glass
3
G
3
Glass
316 SS
G
3
lass
16 SS
lass
16 SS
lass
16 SS
lass
16 SS
150 mm Frames
etted Parts
odel
M
MTF-1121
MTF-2121
MTF-1122
MTF-2122
MTF-1131
MTF-2131
MTF-1132
MTF-2132
MTF-1141
MTF-2141
MTF-1142
MTF-2142
MTF-1151
MTF-2151
MTF-1152
MTF-2152
MTF-1161
MTF-2161
MTF-1162
MTF-2162
attern
P
Isolated
Isolated
Common
Common
Isolated
Isolated
Common
Common
Isolated
Isolated
Common
Common
Isolated
Isolated
Common
Common
Isolated
Isolated
Common
Common
ube Capacity
T
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
6
6
6
6
W
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
Aluminum
316 SS
150 mm Gas Proportioner Frames
Model
MTP-112
MTP-212
MTP-113
MTP-213
Tube Capacity
2
2
3
3
Wetted Parts
Aluminum
316 SS
Aluminum
316 SS
Valve Cartridges
For metering or mixing applications, complete your multitube flow system by
selecting a valve cartridge suitable for the flow range. Choose a standard 6-turn
valve or high precision 16-turn valve.
SPECIFICATIONS
Wetted Parts 6-turn Valves: For Aluminum frames: Aluminum body, 316 SS
spindle, Acetal orifice, Buna-N O-rings; for 316 SS frames: 316 SS body, 316
SS spindle, PCTFE orifice, Fluoroelastomer O-rings.
Wetted Parts 16-turn Valves: For Aluminum frames: Brass body, 316 SS
spindle, PCTFE orifice, Buna-N O-rings; for 316 SS frames: 316 SS body, 316
SS spindle, PCTFE orifice, Fluoroelastomer O-rings.
150 mm Direct Reading Flow Tubes
loat
odel
M
FT-242
FT-244
FT-245
FT-247
FT-248
FT-249
FT-251
FT-253
FT-254
FT-255
ax. Flow Rate Air
M
1.50 SCFM
2.50 SCFH
5.00 SCFH
8.25 SCFH
10.0 SCFH
16.5 SCFH
23.0 SCFH
50.0 SCFH
90.0 SCFH
94.0 SCFH
F
316 SS
Carboloy
Glass
Glass
316 SS
316 SS
Carboloy
Glass
316 SS
316 SS
150 mm Correlated Flow Tubes
Max. Flow Rate (mL/min)*
Model
FT-123
FT-124
FT-125
FT-126
FT-127
FT-128
FT-129
FT-130
FT-133
FT-134
FT-137
FT-138
FT-139
Air
19
61
49
137
92
264
374
814
2313
4562
8678
16737
22536
Water
0.19
0.94
0.53
2.45
0.90
4.70
5.50
20.4
54
130
210
506
541
Float
Glass
316 SS
Glass
316 SS
Glass
316 SS
Glass
316 SS
Glass
316 SS
Glass
316 SS
Glass
Model Standard Valve 6-turn
Aluminum
FV-11
FV-12
FV-13
SS
FV-21
FV-22
FV-23
Flow Rate (Air)
mL/min
0 to 5000
5001 to 10000
10001 and above
Flow Rate (H
mL/min
0 to 125
126 to 325
326 and above
2O)
Model High Precision Valve 16-turn
Aluminum
FVH-11
FVH-12
FVH-13
FVH-14
FVH-15
FVH-16
SS
VA81
VA82
VA83
VA84
VA85
VA86
Flow Rate (Air)
mL/min
0 to 200
201 to 400
401 to 1000
1001 to 2500
2501 to 6200
6201 and above
Flow Rate (H
mL/min
0 to 6
7 to 12
13 to 26
27 to 80
81 to 200
201 and above
2O)
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
FLOW
Flowmeters, Variable Area
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