Comparison table probes/insertion probe |
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Vortex
flow sensorVA |
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Thermal
flow sensor
TA 20 |
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Thermal
flow sensor
TA 10 |
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Gaseous mediums |
air/gases |
air/gases |
air/gases |
air/gases |
Liquid mediums |
liquids
resembling
water |
- |
- |
- |
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Main areas of application |
stationary measuring in clean gases and liquids, control measuring in gases and liquids |
stationary measurement also in particle and condensation laden pressurized air gases |
air mass flow measurement, measurement of compressed air |
air mass flow measurement, measurement of compressed air |
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Measurable variable |
Actual flow |
Actual flow |
Standard flow |
Standard flow |
Measuring ranges in stages |
0.2...120 m/s |
0.5...80 m/s |
0.08...60 Nm/s |
0.2...200 Nm/s |
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Maximum working pressure above atmospheric |
1 MPa /10 bar |
300 kPa / 3 bar |
1 MPa /10 bar |
2,5 MPa /25 bar |
Working temperature range |
-40 °C...+550 °C |
-25 °C...+240 °C |
-10 °C...+240 °C |
-10 °C...+140 °C |
Temperature measuring range
(with integrated sensor Pt100) |
-40 °C...+300 °C |
-10 °C...+250 °C |
-10 °C...+240 °C |
-10 °C...+140 °C |
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Ex-protection zone 0 / category 1 (gases) |
yes |
yes |
yes |
yes |
Ex-protection zone 0 / category 1 (gases) |
yes |
yes |
yes |
yes |
Ex-protection zone 20 / category 1D (dust) |
yes |
yes |
yes |
yes |
Ex-protection zone 21 / category 2D (dust) |
yes |
yes |
yes |
yes |
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Materials which come into contact with mediums |
aluminium, stainless steel, titanium, ... |
stainless steel, titanium, Hastelloy C4/C22/B2, tantalum, ... |
stainless steel, ... |
stainless steel, 1.4571, 1.4305, epoxy resin, polyimide, glass |
Smallest necessary insertion opening |
15 mm |
40 mm |
20 mm |
10 mm |
Smallest measuring tube inside diameter |
40 mm |
80 mm |
80 mm |
25 mm |
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Sensor with directional sensing |
FAR |
VAR |
- |
- |
Sensor with integrated temperature sensor |
FT |
VAT |
Standard |
Standard |
