Ahlborn ALMEMO 2390-5 Instrukcja Obsługi Pobierz pdf (Strona 7)

Thermoanemometer

Thermoanemometer FV A605-TA

For measuring the air velocity the ALMEMO

range of sensors includes rotat-

ing vanes, Pitot tubes and laser-calibrated thermoanemometers with unidirec-

tional or omnidirectional measuring sensitivity. By storing the sensor data in the

ALMEMO

connector, the measured values are indicated in m/s and with the

correct scaling. It is also possible to measure the volume flow by entering a

factor or the cross sectional area.

Measuring Principle:

The sensor contains a NTC resistance, which, with respect to the ambient tem-

perature, is heated up to a constant overtemperature. The flow rate is determ-

ined by measuring the required heating power. As this measurement strongly

depends on the ambient temperature a further precision NTC resistance is

used to measure and automatically compensate the ambient temperature.

Thermoanemometers are particularly suitable for low air velocities, e.g. draught

measurements.

Types:

The thermoanemometer consists of a sensor tube that contains the NTC tem-

perature sensor, the heated miniature thermistor, and the sensor converter

module including the detector electronics for the transducer. The thermoanem-

ometer has been adjusted together with the sensor to be used with it. The con-

verter module and the sensor can, therefore, not be interchanged! The module

is marked with the same fabrication number as its sensor (see type plate).

ALMEMO

Manual 3-5-7

FVA605-TAx

FVA605-TAxO

1 2 3 4 5 6 7 8 9 10 11 12 ... 23 24

Brak uwag

Ahlborn ALMEMO 2390-5 Instrukcja Obsługi Strona 7