| Probes / Insertion Sensors |
Vane wheel
flow sensor FA
 |
Vortex flow sensor VA
 |
Thermal flow sensor TA20
 |
Thermal flow sensor TA10
 |
| Gaseous mediums |
air/gases |
air/gases |
air/gases |
air/gases |
| Liquid mediums |
liquids with viscosity < 200 cSt |
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- |
- |
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| Principal areas of application |
measuring in clean gases and liquids, control measuring in gases and liquids |
measuring in particulate and condensate laden gases |
air mass flow measurement, measurement of compressed air |
air mass flow measurement, measurement of compressed air |
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| Measured variables |
flow velocity / flow rate |
flow velocity / flow rate |
mass flow / standard flow rate |
mass flow / standard flow rate |
| Measuring ranges (in stages) |
0.3...120 m/s |
0.5...80 m/s |
0.08...60 Nm/s |
0.2...200 Nm/s |
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| Working pressure (overpressure) |
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 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 |
No |
Yes |
| Ex-protection zone 1 / category 2 (gases) |
Yes |
Yes |
No |
Yes |
| Ex-protection zone 20 / category 1D (dust) |
Yes |
Yes |
No |
Yes |
| Ex-protection zone 21 / category 2D (dust) |
Yes |
Yes |
No |
Yes |
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| Materials in contact with mediums |
aluminium, stainless steel, titanium ... |
stainless steel, titanium, Hastelloy C4/C22/B2, tantalum ... |
stainless steel ... |
stainless steel 1.4571, 1.4305, 1.4404, epoxy, 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 |
