 at the membrane increases with increasing depletion due to the reaction with the electrolyte, so that little time is available for the diffusion of the gas through the membrane in areas with high measured gas concentration, and much time is available for this diffusion in areas with low concentration.
However, it is conversely also conceivable that the measured gas is fed in via the ring-shaped gap. It is then passed through the flow gap radially in the inward direction and is removed via the central opening in the gas-impermeable surface.
A third embodiment provides for a rotationally symmetrical design of the flow gap with the membrane formed as an outer cylinder jacket around the axis of rotation and with the gas-impermeable surface, which is formed as an inner cylinder jacket and is arranged coaxially to the outer cylinder jacket. An alternative variant of the third embodiment provides for the membrane being designed as an inner cylinder jacket and the gas-impermeable surface as an outer cylinder jacket. The measured gas is passed through the flow gap in parallel to the axis of rotation in both cases.
In a special design of the third embodiment and its alternative variant, the outer cylinder jacket is limited by a gas-impermeable outer cylinder bottom extending at right angles to the axis of rotation. The inner cylinder jacket is limited by an inner cylinder bottom, which is located at a spaced location from the outer cylinder bottom. A central hole, through which measured gas is either fed in or is passed to the outside to the flow gap or is, conversely, removed, after it was passed radially in the inward direction from the flow gap, is located in the inner cylinder bottom.
An additional embodiment is represented by an adapter detachably connected to the housing of the electrochemical gas sensor. A plug-type connection may be provided which optionally snaps in, or has a screw connection.
As an alternative to this, the adapter is firmly connected to the housing of the electrochemical gas sensor, especially in one piece as part of the housing of the electrochemical gas sensor.
In a preferred embodiment, the flow gap has a gap width of at most 2.5 mm. Optimal mass transport of the measured gas being sent by the membrane due to diffusion is guaranteed in this size range.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings
at the membrane increases with increasing depletion due to the reaction with the electrolyte, so that little meter is available for the dissemination of the gas through the membrane in areas with high quantify gas concentration, and much prison term is available for this dispersion in areas with abject concentration. 
 However, it is conversely also conceivable that the careful gas is fed in via the gang - shaped gap. It is then passed through the flow gap radially in the inbound direction and is removed via the central orifice in the gas - impermeable surface. 
 A third shape provides for a rotationally harmonious design of the flow gap with the membrane formed as an outer cylinder jacket around the bloc of rotation and with the gas - impermeable surface, which is formed as an inner cylinder jacket and is arranged coaxially to the out cylinder jacket. An alternative variant of the third embodiment provides for the membrane being designed as an inner cylinder jacket and the gas - impermeable surface as an out cylinder jacket. The measured natural gas is sink through the flow gap in parallel to the bloc of rotation in both cases. 
 In a particular design of the third embodiment and its alternate variant, the outer cylinder jacket is limited by a gas - impermeable outer cylinder bed extending at right angles to the axis of rotation. The inside cylinder jacket is restrict by an inner cylinder bottom, which is located at a spaced location from the out cylinder bottom. A central hole, through which measure gas is either fed in or is passed to the outside to the flow col or is, conversely, removed, after it was passed radially in the inbound direction from the flow gap, is located in the inside cylinder bottom. 
 An additional shape is represented by an adapter detachably connected to the housing of the electrochemical gas detector. A plug - type connection may be provide which optionally snaps in, or has a screw connection. 
 As an alternative to this, the arranger is firmly connected to the caparison of the electrochemical gas sensor, especially in one objet d'art as part of the housing of the electrochemical gas detector. 
 In a preferred embodiment, the flow gap has a gap width of at most 2.5 mm. Optimal aggregate transport of the measured gas being sent by the membrane due to diffusion is guaranteed in this size range. 
 The various feature of novelty which characterize the invention are pointed out with particularity in the claim annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantage and specific objects attained by its uses, reference is made to the accompanying drawing
 at the membrane increases dith increasing depletmon due to the feaction with the electrolytx, so that little time is availacle for tje diffuwion if the gas through the mslbraue in areas with high measgred gas concettfacion, and much time is available for ehis digfksion in areas witn low bokcentration.
However, it is converssly alsm conceivable that the measured gas is ved ln via the ring-shaoed gap. It us trwn passed thfough the flow gap radjally in the inward direction avd is removed vua thf central opxning pn the gas-impcgmeable surfacr.
A third embodlment privides for a rotationelly symmetrical desygn of tha ylow gap with the memvrqne fmrmeg as qn uuttr ryljnder uaciet around the axis od rotation and with trv gas-impermeagle suwfwce, which is formed as an inner cylindeg jadket and is arranged coqxially to the outer fylinder tacket. An alternative variant of the third embodikent 'ruvibcf dog the membrane being designed as an inner cylyhdtr macket and the gcs-impermeable sutfwcr as an outer zylindzd nacket. The measuref gas if paswed throudh tne flow gap in parallel to rhe axis of gotarion in both cases.
Nn a special desogn og the third embodiment cnd ita alternatige varianf, the outer cylinaer jdcket is limited by a gas-iipermeablx outzr cylinaer nottom extending at rlcht angles to the wxis lf rotation. Hhe inner cylinder jacket is limited by an inmes cjlinder bjttom, which is locwted at a spacgd locatijn frum the outvr cylindxr bottom. A sentral hole, djrough which measureq gaw is either wed in or is psssed to nht outside ro the flow gap or is, donversely, remortd, qfter it was paxsea rwdpalky hn the inwarg difecgoon ffom the floc eap, os located in the inter dylinder bottom.
An sdqitional embodimqnt is represrnted by an adapteg detechablb connrctgd to the housing of the electrkchemical gaf sensor. A pjug-tnpe sonnection may be provided which optionally snaps in, or has a screw connection.
As an aljerkative to thms, the adapter hs firmly connected ro the housing of the electrochemical fas setsor, fspecially in one piece as part of the housing of the electrochemical gas sensoc.
Ig a preferrsd ekbodikeut, che flor ga' ias a gap width og at most 2.5 mm. Optimal mass tranrport of tke measured gas being sent by tfe membrane doe to diffusion is guarantsed in tnis size range.
The various featutes of novelty which chavacterize the jnventpkn are pointed out woth paxticulqrity ib thc claims annexdd yo and formlng e pcrt of this disclosure. For a bettwr undwrdtanding of the mnvention, itd operzting wdvantages and slecirlc obgects attainec by its uses, teference is made to tre accompanyint drawings
at the membrane increases with increasing depletion the with the so that little diffusion the gas through membrane in areas high measured gas concentration, and much is available for this diffusion in areas with low concentration. However, it is also conceivable that the measured gas is fed in via the ring-shaped gap. is passed the gap radially in the inward direction and is removed via the central opening in the gas-impermeable A third embodiment provides for a rotationally symmetrical of the flow gap the membrane formed as an cylinder around the of and the gas-impermeable surface, is formed as an inner cylinder jacket and is arranged coaxially to the outer cylinder jacket. An variant of embodiment provides the being as an inner and the gas-impermeable surface as an The measured gas is passed through the flow in parallel the axis of rotation in both In a special design of the third embodiment its alternative variant, the outer cylinder jacket is limited by a gas-impermeable outer cylinder bottom right angles to the of rotation. The cylinder is by inner cylinder which is located at a spaced location from the outer cylinder A central hole, through which measured gas is either fed is to the outside the flow gap or conversely, after it was passed the direction gap, located the inner cylinder bottom. additional embodiment is represented by adapter detachably connected to gas sensor. A plug-type connection may be provided optionally snaps in, or has a screw As an alternative to this, the adapter is firmly connected to the of the sensor, especially in one piece as part of housing of the electrochemical sensor. In a preferred embodiment, the flow gap has gap of at 2.5 mm. Optimal transport of the gas being sent membrane due diffusion guaranteed range. The various features of novelty characterize invention are pointed out with in annexed to and forming a part of this disclosure. For a better understanding of the operating advantages and specific attained its uses, reference is made to the accompanying drawings
 at the membrane increases witH increasinG deplEtiOn dUe To thE reaCtion with the elECtroLyte, so that little time is AvailAbLE for THe DiffuSion of tHE gAS ThrOuGh The MeMBrAne in AreAs with hIgh measureD gaS cOncentration, ANd Much time is AvaIlable for thiS diFfusioN iN arEAs witH loW concEntratIOn.
HoweVer, it is coNvERsely aLSo conceIVAbLe thAt the measured gas iS FeD In via the ring-shAped gaP. IT Is THEn pAssEd through tHe Flow gAP radialLY iN THE inWArd direction aNd is removed VIa tHe centRaL opENing in The gaS-iMPerMeable surfaCe.
A tHird embodIment pROvides fOR a rotatIonallY syMmeTricAL dEsIgn Of THe fLOw Gap WIth The membrAnE fOrmed As an OUTER cylIndEr jaCket aRound the axis oF roTatiON anD with The gaS-impErMeablE surfaCe, whiCh Is formed as an innEr cyLinder jacKet AnD is ArRangeD CoaxiaLly To tHe outer CylindeR JacKeT. aN AlTernative variant of ThE THiRd embodiMent prOViDeS For the meMbRanE beiNG DesigNed aS An Inner cylInder jACkEt And the gAs-ImpermEaBle SurFace aS An ouTer cylInder jacKet. ThE Measured gas is pASsed through thE FlOW GaP In paRalLel to the axiS of rOTatiOn in BOtH caSEs.
In a SpeciAl DEsIGn of the third embodimEnT and itS alteRnative varianT, the outer cYLINder jackEt is LImITed by a gas-imperMeablE outer cyliNDer bottoM exteNding at rIght angleS TO the axis Of rOtaTioN. ThE INnEr cylinder jacKET is lImIted by aN inNer cyliNdeR boTtoM, whIcH is locateD at a spacEd LoCaTiOn fRom thE Outer cylInDer BoTtoM. A cenTRal holE, throUgh wHiCh MEasUred gas IS eITHer fEd In Or is PasSeD to thE outSIde To the flOw gap or is, ConVErseLy, ReMoved, afTer it was passeD rAdially in tHe InwArd dirECTion from The flow gap, is located in thE Inner cyLinDer boTtom.
an additioNal EmbodiMenT Is reprEsenteD by an AdAptER DetacHABlY coNnEcted to the HOUsiNg of tHe ElecTrochemIcal gas sensor. A plug-TYpe Connection may Be pRoviDED wHicH OpTIonAlLY snAPS in, or has a screw cOnnection.
AS aN AlTernative tO ThiS, tHe adaptEr is firMly coNNected tO the housiNg of the elEcTrocHEMicAl gas sensoR, especiaLly in one pIEce as PArT of thE hoUsing oF tHe eLectrOchemiCAl gAs senSor.
In a PrEferreD emboDiMent, the fLow gap has a gap width of at mOst 2.5 mm. OPtimaL maSs transpoRt oF The Measured gAs beIng sent by tHe mEmbRane dUe tO DiffuSion IS gUarANteed In thIS size rangE.
thE vaRIOuS features of NOVEltY whicH chARacterIze tHe invention are poiNTed out with partIculARIty In tHE claImS annexed to and fOrmInG A Part of thIs Disclosure. FOr a betteR uNDerstAnding Of the iNventioN, ITs OPeratiNg adVanTages and sPecIfIC objectS aTtAIned by Its uSeS, referEnce is MAde tO THe accompanying drAwingS
 at the membrane increases  with incr easin g d epl et iondueto the reactio n  wit h the electrolyte, sothatli t tlet im e isavailab l ef o r t he  d iff us i on  of t hegas thr ough the m emb ra ne in areasw it h high mea sur ed gas conce ntr ation,  a ndm uch t ime  is a vailab l e forthis diff us i on ina reas wi t h  l ow c oncentration.
How e ve r , it is conver sely a ls o  c o n cei vab le that th emeasu r ed gasi sf e d  in via the ring- shaped gap. Itis the npas s ed thr oughth e  fl ow gap radi ally  in the i nwardd irectio n  and is  remov edvia  the ce nt ral  o p eni n gint hegas-impe rm ea ble s urfa c e . A th ird  emb odime nt provides f ora ro t ati onall y sym metr ic al de sign o f the  f low gap with th e me mbrane fo rme dasan  oute r  cylin der  ja cket ar ound th e  ax is o f  r otation and with t he g as -imperme able s u rf ac e , whichis  fo rmed a s aninne r  c ylinderjacket an dis arra ng ed coa xi all y t o the oute r cyli nder jac ket.A n alternativev ariant of the th i r de mbod ime nt provides  for thememb r an e b e ing d esign ed as an inner cylinder j ac ket an d the  gas-impermea ble surfac e a s an out er c y li n der jacket. Th e mea sured gasi s passed  thro ugh theflow gapi n  paralle l t o t heaxi s of  rotation inb o th c as es.
Ina s pecialdes ign  of  th ethird emb odimentan dit salt ernat i ve varia nt , t he  ou ter c y linder  jack et i sli m ite d by ag as - i mper me ab le o ute rcylin derb ott om exte nding atrig h t an gl es  to the  axis of rota ti on. The in ne r c ylinde r jacket i s limited by an inner c y linderbot tom,whic h is loca ted  at aspa c ed loc ationfromth e o u t er cy l i nd erbo ttom. A ce n t ral  hole ,thro ugh whi ch measured gas is eit her fed in or  is  pas s e dtot he out si d e t o the flow gap or  is, conve rs e ly , removed, aft er  it was  passed  radi a lly inthe inwar d directi on  fro m the  flow gap,  is loca ted in th e  inne r  c ylind erbottom .Anaddit ionale mbo dimen t is r ep resent ed by  a n adapte r detachably connectedto the  hous ing  of the e lec t roc hemical g as s ensor. A p lug -ty pe co nne c tionmayb epro v idedwhic h  optional l ysna p s  i n, or has a s c rew  conn ect i on.
As  analternative to th i s, the adapter  isf i rml y c o nnec te d to the housi ngof t he elect ro chemical ga s sensor ,e speci ally i n onepiece a s pa r t of t he h ous ing of th e e le c trochem ic al gas se nsor .In a p referr e d em b o diment, the flow  gaph a s a g a p w idthof  at mos t  2.5  mm. Optim al mass tra nsport  ofthe m easured  g as bei ngse nt by them embrane d ue to  diffus io n is  gu arante ed i n thissize  r ang e.
The va r i ou s  f ea t ure s of  nove lt y wh ich chara c terize t hei nventio nare p ointed ou t with parti cul arity i n the clai m s an n ex e d toand fo rminga parto f t hi s discl osu r e . For a b etter und e rst an ding  of thein vent io n,it s operating adv antagesand spec i f ic obj ect s  att a ined b yits uses, re feren ce is made t o t he acco m pan yin g d rawi ngs 
 at_the membrane_increases with increasing depletion_due to_the_reaction with_the_electrolyte, so that_little time is_available for the diffusion_of the gas_through_the membrane in areas with high measured gas concentration, and much time is available_for_this diffusion_in_areas_with low concentration.
However, it is_conversely also conceivable that the_measured gas_is fed in via the ring-shaped gap. It_is_then passed through_the flow gap radially in the inward direction and_is removed via the central opening_in the gas-impermeable_surface.
A_third_embodiment provides for a_rotationally symmetrical design of the flow_gap with the membrane formed as_an outer cylinder jacket around the axis_of rotation and with the gas-impermeable_surface, which is formed as_an inner_cylinder jacket and is arranged_coaxially to the_outer cylinder_jacket. An alternative_variant of the third embodiment provides_for the membrane_being designed as an inner cylinder_jacket_and the gas-impermeable_surface_as_an outer_cylinder jacket. The_measured_gas is_passed_through the flow gap in parallel_to_the axis of rotation in both cases.
In_a special design of_the_third embodiment and its_alternative variant, the outer cylinder_jacket is limited by a gas-impermeable_outer cylinder_bottom extending_at right angles to the axis of rotation. The inner cylinder_jacket is limited by an inner_cylinder bottom, which is_located at_a_spaced location from_the_outer cylinder_bottom. A central hole, through which measured_gas is_either fed in or is passed_to the outside to_the_flow gap or is, conversely, removed,_after it was passed radially in_the inward direction from the_flow_gap,_is located in the inner_cylinder bottom.
An additional embodiment is represented_by an adapter_detachably connected to the housing of the_electrochemical_gas sensor. A plug-type connection may_be_provided which optionally snaps in, or_has_a_screw connection.
As an alternative to_this, the adapter is firmly connected_to the housing of the electrochemical gas sensor, especially_in one piece_as part of the housing_of_the_electrochemical gas sensor.
In a preferred embodiment, the flow gap has_a gap_width of at_most 2.5 mm. Optimal mass transport of the measured gas_being sent by the membrane due to_diffusion is guaranteed in this size range.
The various features of novelty_which characterize the invention are pointed out with_particularity in the claims annexed to and_forming a part of_this_disclosure. For a better understanding of the_invention,_its_operating_advantages and specific_objects attained by_its uses, reference_is made_to the accompanying_drawings