Functional principle
• measurement of flow according
to heat transfer method
• temperature dependence of
measurement compensated by
complete temperature operating
range
Gases
• pure gases, gas mixtures:
air, nitrogen, methane, natural
gas, argon, carbon dioxide,
helium, sulphur hexafluoride,
landfill gas ...
• a calibration with a multitude of
gases or gas mixtures can be
carried out to achieve the
slightest measuring uncertainty
Advantages
• high measuring dynamics Nv
(up to 1 : 1000)
• measuring range from 0.2 m/s
• low measuring uncertainty, even
at lowest flow velocities
• direct air/gas mass flowproportional
measuring.
Additional measuring of
pressure and temperature not
necessary
•
sensor has no moving parts
• stainless steel
sensor housing
• greater working temperature
and pressure ranges
• low installation costs
• low pressure drop due to small
dimensions
• long life
• sterilisable (
sensor materialresistance
allowing)
• optional, double-spaced LCD:
volume flow / counter
• parameterization and optimal
integration with PC software
Particles, condensation,
humidity in the gas
• charges in the gas caused by
particles such as dust and fibres
do not affect the measurement,
as long as abrasion and agglomeration
do not occur on the
sensor
• deviations in values as a result
of variable air humidity in normal
atmospheric conditions are
covered by the measuring
uncertainty specifications
Range and examples of
application
• measuring
- air velocity
- compressed air and gas
consumption, leakage
- laminar flows in clean rooms
or machines
- in outgoing air, burner supply
air and draughts
- in climatic applications
- in air in rough vacuum range
with pressures greater than
200 hPa abs.
Measurable variable
• standard velocity Nv, standard
volume flow NV/t,
mass flow proportional
• norm:
temperature tn = +21 °C,
pressure pn = 1014 hPa
U314_TA10ZG2b_DoP_e_090730 http://www.hoentzsch.com 1/6
Thermal Flow Sensor TA10 ... ZG2b
Sensor TA10 ... ZG2b with integrated transducer U10a TA10 ... ZG2b (Meas. A Page 2)
Design
Probe with integrated transducer
Drawing 2b
