방폭형 삽입식 질량방식 가스유량계(type:TA10/15....Exd)
제  조 사 : Hontzsch GmbH / Germany
사용범위 : size:40~1000mm(ID) / 220~475000 m3/hr
용      도 : 공기,순수가스, 기체의 유량/유속 측정
 

Insertion type Thermal gas flow Transmitter  (Type : TA10/15 ... ZG1 Ex-d) 

 

< Description >

▶ Measurable variables
· standard velocity Nv, standard flow rate NV/t, mass flow proportional
· norm  :  temperature tn = +21 °C,  pressure pn = 1014 hPa

 

▶ Functional principle
· flow measurement according to the the heat transfer method
· temperature-compensated measuring

 

▶ Design / Sensor
· probe with integrated transducer in the Ex-d connection enclosure
· thin film sensor element

 

▶ Gases
· pure gases, gas mixtures  :  air, nitrogen, methane, natural gas, hydrogen, argon, carbon dioxide, helium,

                                            sulphure hexafluoride, landfill gas ...
· calibration can be carried out with a multitude of gases or gas mixtures to achieve the lowest measuring

  uncertainty

 

▶ Advantages
· application in potentially explosive atmospheres  :  Category 1/2 G (Zone 0/1) and

                                                                           Category 1/2 D (Zone 20/21)
· high measuring dynamics Nv (up to 1 : 1000)
· low measurement uncertainty, even at lowest flow velocities
· direct air/gas mass flow proportional measuring  ;  additional measurement of pressure and temperature is

  not necessary
· sensor has no moving parts
· stainless steel sensor housing
· greater temperature and pressure resistance ranges
· low installation costs
· minor pressure drop thanks to small dimensions
· durable
· sterilisable (materialresistance of sensor allowing)
· easy configuration via HARTinterface

 

▶ Examples of application
· measuring
      - in Ex applications
      - of air velocity
      - of compressed air and gas consumption as well as leakage flows
      - of laminar flow in safety cabinets or machines
      - in exhaust air and burner supply air
      - in air-conditioning applications
      - in air in low vacuum range with pressures greater than 200 hPa abs.

 

▶ Particles, humidity in the gas
· charges in the gas caused by particles such as dust and fibres do not affect the measurement, as long as

   there is no abrasion or deposits on the sensor
· deviations in values as a result of variable air humidity in normal atmospheric conditions are covered by the

  measuring uncertainty specifications.

 



  

 

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