Mechanisms like 'ole o ka Lapaau Oxygen Sensors

1. Electrochemical oxygen sensor

Hoʻohana nui ʻia ka electrochemical oxygen sensing element e ana i ka ʻike o ka oxygen i ka ea ambient.Hoʻopiliʻia kēia mau meaʻike i ka mīkini RGM e ana i ka manaʻo o ka hāʻawi oxygen.Haʻalele lākou i nā hoʻololi kemika i ka mea ʻike, e hopena i ka hoʻopuka uila e like me ka pae oxygen.Hoʻololi nā mea ʻike electrochemical i ka ikehu kemika i ka ikehu uila ma o nā kaʻina hana hoʻoemi a me ka hoʻohaʻahaʻa.Hāʻawi ia i kahi puka uila i ka hāmeʻa e like me ka pakeneka o ka oxygen i ka cathode a me ka anode.Hana ʻia ka mea ʻike oxygen ma ke ʻano he kumu o kēia manawa, no laila e hana ʻia ke ana ʻana o ka volta ma o ka resistor ukana.ʻO ka hopena o kēia manawa o ka meaʻike oxygen e like me ka nui o ka hoʻohana oxygen e ka meaʻike oxygen.

Hoʻohana pinepine ʻia ke ʻano puka o kahi mea ʻike electrochemical i nā microamps (a).Hiki kēia i ka wā e hele ai nā electrons i ke kaʻina hana hoʻokahe ma ka anode a hoʻoheheʻe ʻia nā ion i loko o ka hopena electrolyte mai ke kaʻina hana hoʻemi oxygen ma ka cathode.

2. ʻO ka meaʻike oxygen fluorescent

Hoʻokumu ʻia nā mea ʻike oxygen Optical ma ke kumu o ka hoʻopau ʻana i ka fluorescence o ka oxygen.Ke hilinaʻi nei lākou i ka hoʻohana ʻana i nā kumu kukui, nā mea ʻike kukui a me nā mea luminescent e pane i ka mālamalama.Ke hoʻololi nei nā mea ʻike oxygen e pili ana i ka luminescence i nā mea ʻike oxygen electrochemical i nā kula he nui.

Ua ʻike lōʻihi ʻia ke kumu o ka molecular oxygen fluorescence quenching.ʻO kekahi mau molekala a i ʻole nā ​​pūhui e hoʻoheheʻe ʻia (ʻo ia hoʻi, hoʻopuka i ka ikehu māmā) ke ʻike ʻia i ka mālamalama.Eia nō naʻe, inā loaʻa nā molekole oxygen, ua hoʻololi ʻia ka ikehu māmā i nā molekele oxygen, e hopena i ka liʻiliʻi o ka fluorescence.Ma ka hoʻohana ʻana i kahi kumu kukui i ʻike ʻia, ʻike ʻia ka ikehu māmā i hoʻohālikelike ʻia i ka helu o nā molekala oxygen i loko o ka hāpana.No laila, ʻike ʻia ka liʻiliʻi o ka fluorescence, ʻoi aku ka nui o nā molekala oxygen i loko o ke kinoea hāpana.

I kekahi mau mea ʻike, ʻike ʻia ka fluorescence i ʻelua manawa i loko o kahi manawa i ʻike ʻia.Ma kahi o ke ana ʻana i ka fluorescence holoʻokoʻa, ua ana ʻia ka emi ʻana o ka fluorescence i ka manawa (ie, fluorescence quenching).Hāʻawi kēia ʻano hoʻolālā manawa palaho i nā hoʻolālā sensor maʻalahi.

ʻO ka pipeline fluorescent oxygen sensor LOX-02-F he mea ʻike ia e hoʻohana ana i ka fluorescence quenching o oxygen e ana i nā pae oxygen ambient.ʻOiai ua like kona ʻano kolamu a me ka nui o ka 4-series e like me nā mea ʻike electrochemical maʻamau, ʻaʻole ia e komo i ka oxygen a loaʻa iā ia ka pōmaikaʻi o ke ola lōʻihi (5 mau makahiki).He mea pono keia no na mea e like me ka lumi o ka oxygen depletion safety alarms e nana ana i ka haule koke ana o ka oxygen i loko o ke kinoea i hookomoia iloko o ka ea o loko.