Thermoanemometer                                  Fa645t2a.JPG (4259 bytes)Fa645t2b.JPG (3674 bytes)

Thermistors and hot wire sensors have very sensitive measuring elements. The measuring element is continously heated. The temperature of the element which is cooled by the ambient temperature is hold to be constant by regulating circuit power via the instrument. The regulating power is proportional to the air velocity.

Specifications for FV-A645-THx
Measuring range FV-A645-TH2: 0 to 2 m/s
FV-A645-TH3: 0.10 to 20.00 m/s
Max resolution FV-A645-TH2: 0.001 m/s
FV-A645-TH3: 0.01 m/s
Accuracy Velocity measurement:
10 - 36°C: < ± 3% of final value;
0 - 10°C: < ± 5% of final value
Temperature measurement
0.5% over the complete measuring range
Response time T90 m/s: 0.5 s, T90 T: 2 s
Nominal temp. 22°C ± 2 K
Temperature measuring range -20°C to 80°C
Operating range 0 to 40°C
Dimensions length 300 mm, dia. 9 mm, opening 10 mm
Cable length 1.5 m with ALMEMO® measuring module

 

Order No. Description
FV A645 TH Thermo-anemometer
FV A645 TH2 Thermo-anemometer for 0 to 2 m/s
FV A645 TH3 Thermo-anemometer for 0.1 to 20 m/s

 

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