Thermal Flow Sensor TA10/15 Ex-d - U3520 pages

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Thermal Flow Sensor

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TAlO/15 ... ZG1 Ex-d

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hontzsch

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flow measuring technology

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Thermal flow sensor TA10/15 ... ZG1 Ex-d with integrated,

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configurable transducer UTA in pressure-proof Ex-d enclosure

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for application in potentially explosive atmospheres

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Sensor TA10/15 ... ZG1 Ex-d

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	ca.205
fM CO

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SFB ZG5

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Muffe

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Drawing 1: Connection on sleeve

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(Muffe) with inside thread provided

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on site

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Measurable variables

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standard velocity Nv, standard

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flow rate NV/t, mass flow

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proportional

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norm:

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temperature tn = +21 °C,

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pressure pn = 1014 hPa

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Functional principle

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flow measurement according to 1

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the heat transfer method

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temperature-compensated

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measuring

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Design / Sensor

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probe with integrated

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transducer in the Ex-d

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connection enclosure

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thin film sensor element

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Gases

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pure gases, gas mixtures:

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air, nitrogen, methane, natural

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gas, hydrogen, argon, carbon

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dioxide, helium, sulphure

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hexafluoride, landfill gas ...

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calibration can be carried out

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with a multitude of gases or gas

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mixtures to achieve the lowest

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measuring uncertainty

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Advantages

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application in potentially

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explosive atmospheres:

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Category 1/2 G (Zone 0/1) and

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Category 1/2 D (Zone 20/21)

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high measuring dynamics Nv

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(up to 1 : 1000)

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low measurement uncertainty,

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even at lowest flow velocities

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direct air/gas mass flow

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proportional measuring;

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additional measurement of

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pressure and temperature is not

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necessary

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sensor has no moving parts

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stainless steel sensor housing

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greater temperature and

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pressure resistance ranges

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low installation costs

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minor pressure drop thanks to

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small dimensions

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durable

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sterilisable (material-

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resistance of sensor allowing)

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easy configuration via HART®

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interface

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Examples of application

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measuring

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- in Ex applications

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- of air velocity

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- of compressed air and gas

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consumption as well as

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leakage flows

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- of laminar flow in safety

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cabinets or machines

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- in exhaust air and burner

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supply air

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- in air-conditioning applications

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- in air in low vacuum range

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with pressures greater than

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200 hPa abs.

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Particles, humidity in the gas

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charges in the gas caused by

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particles such as dust and fibres

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do not affect the measurement,

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as long as there is no abrasion or

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deposits on the sensor

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deviations in values as a result of

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variable air humidity in normal

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atmospheric conditions are

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covered by the measuring

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uncertainty specifications

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U352_TA1015 Exd_DoP_e_120417 http://www.hoentzsch.com 1/6

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