®
Technical Specifications
Ex-DELTA
®
INSTRUMENTS, LLC.
Product Data Sheet
PDS-VX
2026-07-31
Ex-DELTA
Vortex Flowmeter
Description
Rugged, yet simple, the Ex-DELTA vortex
flowmeter is suitable for a variety of
applications in liquid, gas, air and steam flows.
Sparling/Oval vortex flowmeters are volumetric
flow measuring devices constructed with
stainless steel bodies which provide accurate
and reliable measurement for years in
industrial service.
The various body styles provide complete
flexibility of installation including wafer,
flanged and replaceable sensor style which
allows servicing of the snsor without shutting
down the process flow.
Principle of Operation
Sparling Vortex Meters measure flow rate
based on Karman's vortex shedding principle.
The stationary trapezoidal object (bluff body)
placed into the path of the flow stream sheds
vortices downstream at a frequency
proportional to the velocity of flowing media. A
piezoelectric sensor detects the vortices and
creates electrical impulse signals which is
proportional to the fluid flow rate.
Applications
The Ex-DELTA measures liquid gas, or steam
flows in one flowmeter throughout your plant.
Having a wide flow and temperature range, it
can be extensively used in numerous
applications.
Common Applications Include:
•
measurement of steam, saturated
steam in power plants, chemical
plants, refineries and steel plants
•
Gas flow (nitrogen, oxygen, argon, etc)
measurements and monitoring
•
demineralized and pure water in
biotech, semiconductor and
pharmaceutical
•
air flow measurement
•
oil and crude methanol up to 100cp
•
HVAC
•
food processing
®
INSTRUMENTS, LLC.
Features
•
Standard ±1% Accuracy
•
Sizes available from 0.5" - 6"
•
The unique casting design provides simple construction
without any moving parts, ease of use and service in the
field and long life. The net result is essential savings in
initial cost, running expense and total cost.
•
SST trapezoidal body and embedded piezoelectric
sensor avoids contact with process fluid.
•
Fixed and replaceable sensors. The replaceable sensor
design allows servicing of the sensor without
interrupting the flow and without taking the meter out
from the pipeline. This is suitable for long term
processes and avoids stocking of the replacement spool
pieces.
•
High temp sensors to 788°F (420°C) Standard
temperature range of -22°F - 572°F The wide range of
temperature and pressure allows flow measurement of
a variety of fluids.
•
NEMA 4X Enclosure
•
User selectable rate and total display - Integral mount
transmitter with instantaneous flow rate indicator and
totalizer
•
The EX DELTA is also available as battery powered
(without 4-20mA). This will eliminate the need of an
external power source and saves wiring and installation
costs. The meter will display low battery indication
when a new battery is required.
•
Explosion Proof (Optional)
•
Optional remote mount transmitter allows monitoring
of the flow from a remote or central location.
•
Battery powered unit is also available on a remote
mount transmitter.
•
EL2300 laptop interface allows the user to change flow
meter range from a remote location.
•
4-20mA or Scaled Pulse Outputs
Size (in)
L
I
Meter
I.D.
Meter
O.D.
H
Weight
(lbs)
0.500
2.60
1.30
0.600
1.60
10.9
7.00
1.00
2.60
1.30
1.00
2.60
10.9
8.00
1.50
3.10
1.60
1.50
3.20
10.3
10.0
2.00
3.10
1.60
1.90
3.60
10.5
10.0
3.00
3.90
1.60
2.90
5.00
11.1
16.0
4.00
4.99
1.60
3.70
6.10
11.9
24.0
6.00
6.50
1.90
5.50
8.50
3.10
46.0
®
INSTRUMENTS, LLC.
Size (in)
Flange
Rating
L
I
Meter
I.D.
H
Weight
(lbs)
2.00
ANSI 150
8.00
4.00
1.90
10.5
24.0
2.00
ANSI 300
8.50
4.30
1.90
10.5
28.0
3.00
ANSI 150
9.30
4.00
2.90
11.1
42.0
3.00
ANSI 300
10.0
4.60
2.90
11.1
52.0
4.00
ANSI 150
10.8
4.80
3.70
11.9
58.0
4.00
ANSI 300
11.6
5.20
3.70
11.9
79.0
6.00
ANSI 150
13.4
5.60
5.50
13.1
105
6.00
ANSI 300
14.1
5.99
5.50
13.1
148
8.00
*
13.8
*
7.90
13.7
88.0
10.0
*
17.7
*
9.80
14.5
154
12.0
*
19.7
*
11.7
15.4
198
Size (in)
Flange
Rating
L
I
Meter
I.D.
H
Weight
(lbs)
2.00
ANSI 150
8.00
4.00
1.90
13.7
23.0
2.00
ANSI 300
8.50
4.30
1.90
13.7
27.0
3.00
ANSI 150
9.30
4.00
2.90
14.3
41.0
3.00
ANSI 300
10.0
4.60
2.90
14.3
51.0
4.00
ANSI 150
10.8
4.80
3.70
15.0
60.0
4.00
ANSI 300
11.6
5.20
3.70
15.0
81.0
6.00
ANSI 150
13.4
5.60
5.50
16.3
104
6.00
ANSI 300
14.1
5.99
5.50
16.3
146
8.00
*
13.8
*
7.90
16.9
87.0
10.0
*
17.7
*
9.80
17.7
153
12.0
*
19.7
*
11.7
18.6
197
Liquid
Gas
Size (in)
Liquid (GPM)
Min. Flow
Max. Flow
0.5
3.52
26.42
1
7.05
88.1
1.5
10.6
211.3
2
13.21
347.8
3
20.25
757.3
4
48.43
1301.3
6
145.3
2840
8
211.3
4975
10
466.7
7705
12
664.8
11052
Size (in)
Gas (ACFM)
Min. Flow
Max. Flow
0.5
6.74
19.43
1
12.34
76.51
1.5
18.56
170.67
2
24.51
288.37
3
46.21
647.35
4
80.76
1088.73
6
174
2456
8
300.83
4120
10
650.16
6180
12
928.8
8878
Above table is based on typical liquid (water) measurement, sp. gravity 1 at 70°F
Above table is based on air measurement at 70°F & atmosphere pressure of 15 psi
Steam
*= Accuracy ±1% Full Scale
()= Accuracy ±1.5% Reading
Accuracy=±1% Full Scale Reading
Pressure (psi)
0.5"
1"
1.5"
2"
3"
4"
6"
8"
10"
12"
7
Min
12*
22
31
48*
64
88
176
308
660
1144
2508
3608
Max
64
246
550
924
2090
(2618)
3520
(4488)
7942
(9812)
13310
(17204)
19998
(26620)
28380
(38060)
14
Min
13*
22
44
55*
64
110
198
352
748
1298
2882
4114
Max
81
321
717
1210
2706
(3410)
4576
(5852)
10340
(12760)
17336
(22220)
25960
(34540)
36960
(49720)
28.4
Min
13*
22
46
72
132
264
462
968
1694
3762
5390
Max
81
466
1045
1760
3960
(4950)
6666
(8514)
15048
(18560)
25080
(32560)
37620
(50380)
53900
(72160)
57
Min
24
59
99
176
374
616
1342
2332
5148
7392
Max
191
752
1681
2838
6358
(7986)
10714
(13706)
24200
(29700)
40480
(52360)
60720
(80960)
86900
(116160)
71
Min
29
66
112
198
418
704
1496
2618
5786
8272
Max
227
893
1993
3366
7546
(9482)
12716
(16280)
28600
(35420)
47960
(62040)
72160
(96140)
103180
(137940)
100
Min
33
81
134
220
484
836
1782
3124
6908
9900
Max
297
1170
2596
4400
9900
(12430)
16676
(21340)
37620
(46420)
62920
(81400)
94600
(126060)
135080
(180840)
128
Min
37
92
154
264
550
550
946
3608
7964
11396
Max
367
1448
3212
5456
12254
(15356)
12254
(15356)
20592
(26180)
77880
(99000)
116820
(155980)
166980
(222200)
157
Min
42
103
172
286
616
1078
2310
4048
8954
12826
Max
438
1725
3828
6490
14586
(18260)
24420
(31240)
55440
(68420)
992840
(119900)
139260
(185680)
198880
(266200)
171
Min
44
110
180
308
660
1122
2442
4246
9416
13483
Max
473
1861
4136
6996
15730
(19756)
26400
(33880)
59840
(73700)
100100
(129360)
150260
(200420)
214720
(286000)
199
Min
49
119
198
330
726
1232
2662
4840
10120
14762
Max
541
2132
4752
8030
18040
(22440)
30140
(38720)
68420
(84480)
114620
(148060)
172260
(228800)
244200
(327800)
228
Min
53
130
216
352
770
1320
2882
5060
11176
15994
Max
612
2398
5368
9064
20372
(25520)
34100
(43780)
77220
(95480)
129580
(167200)
183260
(257400)
277200
(369600)
257
Min
57
139
231
396
836
1430
3102
5434
12012
17292
Max
68
2684
5984
10120
22660
(28380)
38060
(48840)
86240
(106480)
144540
(186560)
216700
(288200)
308000
(413600)
284
Min
59
150
246
418
902
1518
3300
5786
12804
19052
Max
752
2948
6600
11154
24860
(31240)
42020
(53900)
95040
(117260)
159280
(205700)
237600
(316800)
341000
(455400)
426.3
Min
77
191
319
528
1144
1980
4268
8470
16566
28160
Max
1104
4334
9702
16390
36740
(45980)
61820
(79200)
139700
(172480)
233200
(301400)
349800
(466400)
501600
(671000)
568
Min
95
233
385
638
1386
2376
5170
11242
21692
37400
Max
1467
5764
128992
21780
48840
(61160)
82060
(105160)
185680
(228800)
310200
(400400)
466400
(620400)
666600
(891000)
612
Min
99
244
405
660
1452
2486
5412
12100
23320
40040
Max
1577
6204
13860
23320
52580
(65780)
88440
(113080)
199760
(246400)
334400
(431200)
501600
(668800)
717200
(959200)
®
INSTRUMENTS, LLC.
How to order a Smart Ex-DELTA
Table 1: BaseModelNumber
VXW
-
Wafer type body style
VXF
-
Flange type body style
VXR
-
Flanged replaceable sensor
Table 2: Applications
1
-
Standard
Table 3: Size
015
-
0.5"
025
-
1"
040
-
1.5"
050
-
2"
080
-
3"
100
-
4"
150
-
6"
200
-
8"
250
-
10"
300
-
12"
Table 4: MeterBodyMaterial
N
-
Stainless Steel Casting (0.5-6")
C
-
316 stainless steel or equivalent (8-10")
Z
-
Other
Table 5: PressureRating
5
-
150 psi
6
-
300 psi
9
-
Other
Table 6: SensorConstruction
1
-
1.5-12"
2
-
0.5-1" (separate sensor type)
Table 7: Fluids
G
-
Gas (below 572°F)
L
-
Liquid (below 572°F)
S
-
Gas or Steam (to 788°F) - Replaceable sensor only
H
-
Liquid (to 788°F) - Replaceable sensor only
Table 8: PreampConstruction
1
-
Integral Mount
2
-
Remote Mount
Table 9: ExplosionProofConstruction
0
-
None
1
-
Explosion Proof
Table 10: Display
0
-
None
1
-
Totalizer or Digital Indicator
Table 11: Output
5
-
Pulse Output
6
-
4-20mA
0
-
Battery Powered
Table 12: Options
HART
Fieldbus
Model
Apps
Size
Material
Pressure
Sensor
Fluids
Preamp.
Exp. Proof
Display
Output
VXW
1
015
N
5
2
G
1
0
0
5
®
INSTRUMENTS, LLC.
Standard Specifications
Accuracy:
±1% Full Scale
Repeatability:
±2% of full scale
Outputs:
4-20mA
(0-100 Seconds) or scaled pulse, Unscaled Pulse-pulse levels: "0"-4mA, "1"-20mA
Display:
User selectable
Single Line, 8 digit totalizer
7 digit flow rate
Percent full scale
8 section bar graph
Power Requirements:
12-45VDC or Battery Powered
Enclosures:
NEMA 4X Explosion Proof (Optional)
End Connections:
Wafer or Flanged
Flow Ranges:
See Tables
Process Fluids:
Gas, Steam, Air, Super Heated Steam, Saturated Steam, Dirty Liquids (EX DELTA DIA)
Construction Material:
Meter Body: Series 300 SST or 316 SST
Bluff Body: 316 SST
Enclosure: NEMA 4X Aluminum alloy with baked melamine finish
Pressure Rating:
•
Wafer style design pressure is rated up to 725 psi.
•
Check the connecting flange rating for flange style meters (150 psi, 300 psi)
Operating Temp.:
-22°F to 572°F
High Temp. Construction:
788°F
Approvals:
Cenelec, CSA, FM
