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VA 570

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VA 570 Inline Thermal Mass Flow Meter

For heavy duty industrial application

The VA 570 is designed for heavy duty industrial application specifically for harsh environments. The flow sensor is based on the thermal mass flow principle, it measures flow, consumption, medium temperature and velocity. Therefore the temperature and pressure compensation is not necessary.

VA 570 is supplied with an integrated measuring section. The measuring section are available in flanged version or with R resp. NPT thread. The aluminium die-cast housing with IP67 code allows all weather applications. All parts which come into contact with the measurement medium are made of stainless steel 316L. This allows applications in medical, pharmaceutical and food industry, but also the measurement of corrosive and contaminated gas. Installations in explosive environments can be done through the optional ATEX approval. Various gases can be measured such as air, oxygen, argon, carbon dioxide, natural gas, hydrogen, methane and etc… Basically, any gas mixture can be measured as long the mixing ratio and its components are known and constant.

Special Features

  • IP67 Robust impact proof aluminium die cast housing for the outdoor area
  • Display showing flow rates, consumption, medium temperature and diagnostic results
  • On request ATEX approval ATEX II 2G Ex d IIC T4
  • Pressure Range up to 50 bar, special version up to 100 bar
  • Temperature range up to 180 °C, optionally up to 350°C
  • No moving parts, no wear out
  • Sensor tip very robust, easy to clean
  • Easy mounting and dismounting under pressure via 1/2" ball valve
  • Flow measurement in both directions via flow direction switch
  • Integrated Ethernet Interface (Modbus/TCP) now available
  • Direct measurement of mass flow and standard flow without the need of pressure compensation
  • All parts which come into contact with the measurement medium are made of stainless steel 316L

Application

  • Ideal also for the outdoor area
  • Compressed air measurement and distribution
  • Leakage measurement of compressed air and gases
  • Flow measurement of gases like nitrogen, argon, carbon dioxide, oxygen and so on
  • Flow measurement in vacuum systems
  • Flow measurement of explosive gases like natural gas, methane, propane, hydrogen with ATEX approval
  • Flow measurement of corrosive, acid gases like biogas with different gas mixtures
  • Measurement of oxygen and natural gas at gas burners
  • Flow measurement of gas mixtures like forming gas

Technical Data

Measuring range50 Nm/s, low-speed version
92.7 Nm/s, standard version
185 Nm/s, max. version
224 Nm/s, high-speed version
Measuring principleThermal mass flow sensor
Measuring parametersFlow, consumption, flow speed and temperature
Accuracy class
(m.v. = of measured value) (f.s. = of full scale) 		± 1.5 % of m.v. ± 0.3 % of f.s.
± 1.0 % of m.v. ± 0.3 % of f.s. (On request)
Measuring mediumAir, nitrogen, argon, helium, CO2, oxygen, natural gas (NG), propane, bio gas, etc…
Measuring unitsm3/h, m3/min, l/min, Nm3/h, Nm3/min, Nl/min, cfm, kg/h, kg/min, etc…
Display2” TFT colour display (320 x 240)
Response timet 90 < 3 s
Operating pressure16 bar / High pressure version 40 bar (PN40)
Operating temperature-40...180 °C (Sensor probe)
-20...70 °C (Display unit)
-20...120 °C (for ATEX version)
OutputsStandard : 1 x 4...20 mA analogue output, pulse output, RS 485 (Modbus-RTU)
Optional : 2 x 4...20 mA active, Modbus TCP, HART, Profibus DP, Profinet, M-Bus
Power supply18...36 VDC, 5 W
Burden< 500 ohm
MaterialsHousing - Die-cast aluminium / Sensor probe - Stainless steel 316Ti (1.4571)
Protection classIP 67
ConnectionThread : R ½” – 2”, NPT ½” – 2”
Flange : ANSI DIN 1092-1, ANSI 15.5 Class 150 lbs, ANSI 16.5 Class 300 lbs
ApprovalATEX II 2G Ex db IIC T4 Gb / ATEX II 2D Ex tb IIC T90 °C, Db. / DVGW

Flow Range

Pipe Size

Thread Connection

DN15

DN20

DN25

DN32

DN40

DN50

DN65

DN80

Flange Connection

½”

¾”

1”

1 ¼”

1 ½”

2”

N/A

N/A

Flow Measurement Units

m3/h (cfm)

m3/h (cfm)

m3/h (cfm)

m3/h (cfm)

m3/h (cfm)

m3/h (cfm)

m3/h (cfm)

m3/h (cfm)

Reference conditions DIN 1945 / ISO 1217: 20 °C, 1000 mbar

Air

Low-Speed (50 m/s)

20 (14)

45 (25)

75 (45)

140 (80)

195 (115)

320 (190)

550 (325)

765 (450)

Standard (92.7 m/s)

45 (25)

85 (50)

145 (85)

265 (155)

365 (215)

600 (350)

1025 (600)

1420 (835)

Max (185 m/s)

90 (50)

175 (100)

290 (170)

530 (310)

730 (430)

1195 (700)

2050 (1205)

2840 (1670)

High-Speed (224 m/s)

110 (60)

215 (125)

255 (210)

640 (375)

885 (520)

1450 (850)

2480 (1460

3440 (2025)

Reference conditions DIN 1945 / ISO 1217: 20 °C, 1000 mbar

Argon

(Ar)

Low-Speed (50 m/s)

35 (20)

75 (40)

120 (70)

220 (130)

305 (180)

505 (295)

865 (510)

1200 (705)

Standard (92.7 m/s)

70 (40)

135 (80)

230 (135)

415 (245)

570 (335)

935 (550)

1605 (945)

2225 (1310)

Max (185 m/s)

140 (80)

275 (160)

460 (270)

830 (485)

1140 (670)

1870 (110)

3205 (1885)

4440 (2615)

High-Speed (224 m/s)

170 (100)

335 (195)

555 (325)

1005 (590)

1385 (815)

2265 (1330)

3880 (2285)

5380 (3165)

Nitrogen

(N2)

Low-Speed (50 m/s)

20 (13)

40 (25)

70 (40)

130 (75)

180 (105)

295 (175)

505 (300)

705 (415)

Standard (92.7 m/s)

40 (20)

80 (45)

135 (75)

240 (140)

335 (195)

550 (320)

945 (555)

1305 (770)

Max (185 m/s)

80 (45)

160 (95)

270 (155)

485 (285)

670 (395)

1100 (645)

1885 (1110)

2610 (1535)

High-Speed (224 m/s)

100 (55)

195 (115)

325 (190)

590 (345)

815 (475)

1330 (780)

2280 (1340)

3165 (1860)

Oxygen

(O2)

Low-Speed (50 m/s)

20 (13)

45 (25)

75 (40)

135 (80)

185 (110)

305 (180)

525 (310)

730 (430)

Standard (92.7 m/s)

40 (25)

80 (45)

140 (80)

250 (145)

345 (205)

570 (335)

980 (575)

1355 (795)

Max (185 m/s)

85 (50)

165 (95)

280 (165)

505 (295)

695 (410)

1140 (670)

1955 (1150)

2710 (1590)

High-Speed (224 m/s)

105 (55)

205 (120)

340 (200)

610 (360)

845 (495)

1380 (810)

2365 (1390)

3280 (1930)

Natural Gas

(NG)

Low-Speed (50 m/s)

14.4 (8)

25 (15)

45 (25)

85 (50)

115 (65)

190 (110)

325 (190)

450 (265)

Standard (92.7 m/s)

25 (15)

50 (30)

85 (50)

155 (90)

215 (125)

355 (205)

605 (355)

840 (495)

Max (185 m/s)

50 (30)

105 (60)

170 (100)

310 (185)

430 (250)

705 (415)

1210 (710)

1680 (985)

High-Speed (224 m/s)

65 (35)

125 (70)

210 (120)

380 (220)

520 (305)

855 (500)

1465 (865)

2035 (1195)

VA570 Dimension – Thread Version

Thread Size

Pipe OD

(mm)

Pipe ID

(mm)

L

(mm)

L1

(mm)

H

(mm)

H1

(mm)

A

(mm)

½”

21.3

16.1

300

210

176

165.7

20

¾”

26.9

21.7

475

275

179

165.7

20

1”

33.7

27.3

475

275

182

165.7

25

1 ¼”

42.4

36

475

275

186

165.7

25

1 ½”

48.3

41.9

475

275

189

165.7

25

2”

60.3

53.1

475

275

195

165.7

30

VA570 Dimension – Flange Version

Flange Size

Pipe OD

(mm)

Pipe ID

(mm)

L

(mm)

L1

(mm)

H

(mm)

H1

(mm)

ØD

(mm)

ØK

(mm)

N x ØL (mm)

DN15

21.3

16.1

300

210

213.2

165.7

95

65

4 x 14

DN20

26.9

21.7

475

275

218.2

165.7

105

75

4 x 14

DN25

33.7

27.3

475

275

223.2

165.7

115

85

4 x 14

DN32

42.4

36

475

275

235.7

165.7

140

100

4 x 18

DN40

48.3

41.9

475

275

240.7

165.7

150

110

4 x 18

DN50

60.3

53.1

475

275

248.2

165.7

165

125

4 x 18

DN65

76.1

68.9

475

275

268.2

175.7

185

145

8 x 18

DN80

88.9

80.9

475

275

275.7

175.7

200

160

8 x 18

Product Information

VA570 Flow Meter Data Sheet