BE649566A - - Google Patents

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Publication number
BE649566A
BE649566A BE649566DA BE649566A BE 649566 A BE649566 A BE 649566A BE 649566D A BE649566D A BE 649566DA BE 649566 A BE649566 A BE 649566A
Authority
BE
Belgium
Prior art keywords
coil
chamber
gas
air
compensation
Prior art date
Application number
Other languages
French (fr)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BE649566A publication Critical patent/BE649566A/fr

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/16Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Sampling And Sample Adjustment (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Appareil pour  1 la   mesure de le concentration des gaz et des vapeurs   combustibles   dans   l'air.   



     L'invention   concerne un appareil pour la   mesure   de        la     concentration   des   gaz   et vapeurs combustibles   dans   l'air. 



  La problème   consistait     à   éviter une indication équivoque pouvant se produire lors des mesures des   variations   de tem-   pérature     dans  les   échantillons     d'air   avec une   haute   teneur en   gaz*   Ce problème à été résolu en   plaçant, dans   une ou dans   les     deux  branches du pont de   mesure,

     un   ballast   supplé- mentaire de telle   manière   que la bobine de compensation   *saurs   la fonction de bobine détacirice   d'une   indication   d'un*     transmission   de chaleur   aux   dépens de la sensibilité de   l'indication   de la   variation   de la température.

   le bal- last peut   avantageusement     avoir   la forme   d'un*   bobina non balcyée par le mélange de gaz et d'aire à mesurer, en   parti.   culier pour la   compensation     des   variations de   pression     et/ou   

 <Desc/Clms Page number 2> 

      de   température   dues aux effets de   le transmission   de la choeur   ainsi   que pour la   compensation     d'outrée     influencée.   



  Il cet   nécessaire à   cet effet d'installer la bobine   dans   une chambre   emparée   de la bobine de   détection   et de la bo- 
 EMI2.1 
 bine de caapanst3on. La condition de la compensation dit la pression, de la température et d'eutrea influenc*4,est que la bobine supplémentaire MrvMH de ballast soit 1noumi- se, comme toutes les bobine* du   système,   aux aimas copdi- tions, et en particulier aux mêmes conditions de   pression   et de température.   Des   conditions de pression et de tem- 
 EMI2.2 
 pdrutures différente@ aux diverses bobinée pourre-ient de- ranfer sensiblement 1 équilibre du pont électrique oe6pla. 



   / car le zéro de manière incontrôlable   Suivent,   l'invention, pour éviter cet   inconvénient,     le   ballant   constitué   par la bobire   supplémentaire   est 
 EMI2.3 
 iamtalli dans une chambre formée 9 dt&ncho aux gais munit      
 EMI2.4 
 de dispositifs d'tdeptBtion à la pression régnant aux environs de   l'appareil*   Le   dispositif   servant à la compen- sation de la pression peut   avantageusement   avoir la   forma   d'une membranes   4$une   botte   barométrique   au   d'un     soufflât     raccordé   à la chambra de   manière   étanche aux   gaz 

     La cham-      
 EMI2.5 
 bre contentnt la bobine supplémentaire ont placée avec 1*4 chambres pour la bobine dètectries et la bobine ide   compensation   dans un   bloc     communs     métallique. de     préférence,   
 EMI2.6 
 en vue de conserver la tatmo température pour tot-tao les bobines;. 



  Le dessin 'bnnME< représenta achémstiqueaent un exemple d'exécution de l'invention, désigne la bobine déttetrica et IC la bobina de coapaattion d'un appareil indicateur des variations de t ap4rbtuy<. Les deuxlbobin4a se trouvant dgne une elitmbre cooneune 1 dans laquelle lié. 

 <Desc/Clms Page number 3> 

 
 EMI3.1 
 cantillon d'air contenant le gas cet amené dans le      sens de la flèche La bobina 9 constituant le ballest se ttouve   dais   une chambre 10,   séparée   de manière étanche 
 EMI3.2 
 de 1* che#bri 1 et placée avec celle-ci dana un blo: cota- aux.

   La chambre 10 est remis par une membrane élastique lit étanche gaz. du-d88sua de le membrane 12, et trouva un chapeau de protection   14   muni   d'un   perçage 13 de com- pansstion de   1 ' air   
 EMI3.3 
 R s v 3 x .CCATi0hi8.      



   <Desc / Clms Page number 1>
 



  Apparatus for 1 measuring the concentration of combustible gases and vapors in air.



     The invention relates to an apparatus for measuring the concentration of combustible gases and vapors in air.



  The problem was to avoid an equivocal indication that could occur when measuring temperature variations in air samples with a high gas content * This problem was solved by placing, in one or both branches of the bridge measurement,

     an additional ballast such that the compensation coil * acts as a detachable coil of an indication of heat transfer at the expense of the sensitivity of the indication of temperature change.

   the ballast may advantageously have the form of a coil not balanced by the mixture of gas and area to be measured, in part. for the compensation of pressure variations and / or

 <Desc / Clms Page number 2>

      of temperature due to the effects of the transmission of the chorus as well as for the compensation of influenced overrun.



  It is necessary for this purpose to install the coil in a chamber gripped by the detection coil and the bo-
 EMI2.1
 caapanst3on bine. The condition of the so-called pressure, temperature and influence compensation * 4, is that the additional ballast MrvMH coil is 1noumi-, like all the coils * in the system, at the copditions, and in particular at the same pressure and temperature conditions. Pressure and temperature conditions
 EMI2.2
 Different pdrutures @ to the various coils could appreciably change the balance of the electric bridge oe6pla.



   / because the zero in an uncontrollable manner Following, the invention, to avoid this drawback, the dangling formed by the additional bobire is
 EMI2.3
 iamtalli in a chamber formed 9 dt & ncho aux gays munit
 EMI2.4
 of devices for pressure control prevailing in the vicinity of the apparatus gas-tight

     The room
 EMI2.5
 The additional coil is placed with 1 * 4 chambers for the detection coil and the compensation coil in a common metal block. preferably,
 EMI2.6
 in order to keep the tatmo temperature for tot-tao the coils ;.



  The drawing 'bnnME <represented achémstiqueaent an example of execution of the invention, designates the dettetrica coil and IC the coapaattion coil of a device indicating the variations of t ap4rbtuy <. The two lbobin4a lying in a cooneune element 1 in which linked.

 <Desc / Clms Page number 3>

 
 EMI3.1
 air channel containing the gas this brought in the direction of the arrow The coil 9 constituting the ballest is ttouve a chamber 10, separated in a sealed manner
 EMI3.2
 of 1 * che # bri 1 and placed with it in a blo: cota- aux.

   The chamber 10 is provided by an elastic membrane gas tight bed. du-d88sua of the membrane 12, and found a protective cap 14 with an air compression hole 13.
 EMI3.3
 R s v 3 x .CCATi0hi8.

 

Claims (1)

1,4 appareil pour la mesure du la concentration de gaz et de vapeur combustibles dans l'air caractérisé en et que$ lorsque le ballast est constitué par une bobine supplémentaire non exposée au mélange gaz-air, suivant la revendication 2, cette bobine *et instillée dans une EMI3.4 chambre form 4*$ tunie de dispositif* pour l'adaptation à la preeeion régnant au voisinage de l'appareil. 1.4 apparatus for measuring the concentration of combustible gas and vapor in air, characterized in and that $ when the ballast consists of an additional coil not exposed to the gas-air mixture, according to claim 2, this coil * and instilled in a EMI3.4 chamber form 4 * $ device tunie * for adaptation to the preeeion prevailing in the vicinity of the device. 2. -Appariel suivant la revandication 1, caractérié en ce qu'en vue de la condensation de la pressions Uns membrane, une boîte barométrique ou un soufflet est EMI3.5 raccorde à la chambre dé4emttnière connu86tanche aux pa< 3.- appareil suivant les revendications 1 et 2, carte* térisé en ce que la chambre contenant la bobine auppi. EMI3.6 mentaire eat inatallée, avec les chambr*4 pour la bobine - détectrice et la bobine de compensation , dans un bloc rt commun, de préférence un bloc métallique* 2. -Apparel according to claim 1, characterized in that for the condensation of the pressures of a membrane, a barometric box or a bellows is EMI3.5 connected to the chamber previously known 86tight to pa <3.- apparatus according to claims 1 and 2, card * terized in that the chamber containing the coil auppi. EMI3.6 unit is not installed, with the chambers * 4 for the coil - detector and the compensation coil, in a common block, preferably a metal block *
BE649566D 1963-07-18 1964-06-22 BE649566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0043614 1963-07-18

Publications (1)

Publication Number Publication Date
BE649566A true BE649566A (en) 1964-10-16

Family

ID=6933747

Family Applications (1)

Application Number Title Priority Date Filing Date
BE649566D BE649566A (en) 1963-07-18 1964-06-22

Country Status (3)

Country Link
BE (1) BE649566A (en)
ES (1) ES302091A1 (en)
NL (1) NL6406705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280587B (en) * 1965-11-02 1968-10-17 Rau Swf Autozubehoer Exhaust gas testing device for motor vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280587B (en) * 1965-11-02 1968-10-17 Rau Swf Autozubehoer Exhaust gas testing device for motor vehicles

Also Published As

Publication number Publication date
ES302091A1 (en) 1965-01-01
NL6406705A (en) 1965-01-19

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