ʻO ka mea ʻike kinoea ʻawaʻawa, ʻike ʻole ʻia kēia huaʻōlelo ʻoihana, a ʻaʻole hiki ke loaʻa i ke ola maʻamau, no laila ʻike liʻiliʻi mākou e pili ana i kēia ʻike, akā ma kekahi mau ʻoihana kikoʻī, pono kēia ʻano mea hana e hana ai i kāna hana.Hāʻawi ʻia i ka hana, e hele kāua i loko o kēia honua ʻē aʻe o nā inoa inoa a aʻo i kekahi ʻike palekana.
ʻO ka mea ʻike kino kinoea - Hoʻohana ʻia e ʻike i nā kinoea ʻona (ppm) i ka lewa a puni.Hiki ke ʻike ʻia nā kinoea e like me carbon monoxide, hydrogen sulfide a me hydrogen.Hoʻokaʻawale ʻia nā mea ʻike kinoea i loko o nā mea ʻike kinoea ʻona a me nā mea ʻike kinoea.ʻO nā huahana palekana intrinsically nā huahana palekana i hiki ke hoʻohana ʻia i nā kūlana weliweli loa.
Nā hiʻohiʻona: 0, 2, 4 ~ 20, 22mA i kēia manawa puka / Modbus bus hōʻailona;hana pale ʻakomi e kūʻē i ka haʻalulu kinoea kiʻekiʻe;kiʻekiʻe-pololei, anti-poisoning sensor lawe ʻia mai;ʻelua puka komo, kūpono no ka hoʻokomo ʻana ma ka pūnaewele;keʻena kinoea kūʻokoʻa He maʻalahi ke hoʻololi ʻana i ka hale a me ka sensor;he hoʻonohonoho o nā mea hoʻopuka hoʻopili hoʻopono polokalamu;ka hoʻopaʻa ʻana i ka zero a me ka uku wela;ʻO ExdⅡCT6 ka papa hōʻike pahū.
Manaʻo hana: Hoʻohālikelike ka mea ʻike kinoea puhi ahi/ʻawaʻawa i ka hōʻailona uila ma ka mea ʻike, a ma hope o ka hoʻoili ʻana i ka ʻikepili kūloko, hoʻopuka i kahi hōʻailona o kēia manawa 4-20mA a i ʻole Modbus bus hōʻailona e pili ana i ka ʻike kinoea a puni.
Hoʻokomo pinepine ʻia nā mea ʻike kinoea ʻawaʻawa i nā lako ahi i nā ʻoihana petrochemical.He aha ka kikoʻī hoʻonohonoho no nā mea ʻike kinoea ʻona i ka "Code for Design of Flammable Gas and Toxic Gas Detection and Alarm in Petrochemical Enterprises" i ʻōlelo ʻia e nā keʻena mokuʻāina?Aia ma lalo iho nā kikoʻī hoʻonohonoho no nā mea ʻike kinoea ʻona e hāʻawi i alakaʻi no nā mea a pau e hoʻokomo i nā mea ʻike kinoea ʻona.
Hōʻike ʻo SH3063-1999 "Nā ʻoihana Petrochemical Combustible Gas a me Toxic Gas Detection Alarm Design Specification":
1) Pono e hoʻokomo ʻia nā mea ʻike kinoea ʻona ma nā wahi me ka hopena ʻole, ka haʻalulu, a me ka hoʻopili ʻana i ke kahua electromagnetic ikaika, a e waiho ʻia kahi ʻae ʻole ma lalo o 0.3m.
2) I ka ʻike ʻana i nā kinoea ʻawaʻawa a ʻino, pono e hoʻokomo ʻia ka mea ʻike i loko o 1m mai ke kumu hoʻokuʻu.
a.I ka ʻike ʻana i nā kinoea ʻona a ʻino ʻoi aku ka māmā ma mua o ka ea e like me H2 a me NH3, pono e hoʻokomo ʻia ka mea ʻike kinoea ʻona ma luna o ke kumu hoʻokuʻu.
b.I ka ʻike ʻana i nā kinoea ʻawaʻawa a me nā kinoea ʻino i ʻoi aku ke kaumaha ma mua o ka ea e like me H2S, CL2, SO2, etc., pono e hoʻokomo ʻia ka mea ʻike kinoea ʻona ma lalo o ke kumu hoʻokuʻu.
c.I ka ʻike ʻana i nā kinoea ʻawaʻawa a ʻino e like me CO a me O2 nona ka ʻumekaumaha kikoʻī kokoke i ko ka ea a hui maʻalahi me ka ea, pono e hoʻokomo ʻia ma kahi ākea maʻalahi e hanu.
3) ʻO ka hoʻokomo ʻana a me ka uwea ʻana o nā mea ʻike kino kino e hoʻokō me nā ʻōlelo kūpono o GB50058-92 "Code for Design of Electric Power for Explosion and Fire Hazardous Environments" me ka hoʻohui ʻana i nā koi i kuhikuhi ʻia e ka mea hana.
I ka pōkole: ʻo ka hoʻokomo ʻana i nā mea ʻike kinoea ʻona e pono i loko o kahi radius o 1 mika kokoke i nā wahi leak-prone e like me nā kiwi, nā paipu paipu, a me nā puka puka makani, e like me ka hiki, akā ʻaʻole e pili i ka hana o nā mea hana ʻē aʻe, a e ho'āʻo e pale i ka wela kiʻekiʻe, ka haʻahaʻa haʻahaʻa kiʻekiʻe a me nā hopena o waho (e like me ka splashing wai, ka aila a me ka hiki ke hoʻopōʻino mechanical.) I ka manawa like, pono e noʻonoʻo ʻia no ka mālama maʻalahi a me ka calibration.
Ma waho aʻe o ka nānā ʻana i ka hoʻonohonoho pono ʻana a me ka hoʻohana ʻana i nā mea ʻike kinoea ʻona, ʻo ka mālama ʻana i ka mīkini palekana kekahi ʻano ʻaʻole hiki ke mālama ʻia.Loaʻa i nā lako hana ahi ke ola, a ma hope o kekahi manawa o ka hoʻohana ʻana, e loaʻa ana nā pilikia o kekahi ʻano a i ʻole kekahi, a pēlā pū me nā mea ʻike kinoea.Ma hope o ka hoʻokomo ʻana i kahi mea ʻike kinoea ʻona, hiki mai kekahi mau hewa maʻamau ma hope o ka holo ʻana no kekahi manawa.I ka wā e loaʻa ai kahi hewa, hiki iā ʻoe ke kuhikuhi i kēia mau ala.
1. Ke haʻalele nui ka heluhelu mai ka mea maoli, ʻo ke kumu o ka hāʻule ʻana paha ʻo ia ka hoʻololi ʻana o ka naʻau a i ʻole ka hemahema o ka mea ʻike, a hiki ke hoʻololi hou ʻia ka ʻike.
2. Ke hāʻule ka mea hana, ʻo ka uwea wehe a pōkole paha;ua pōʻino ka mea ʻike, wehe, pōkole pōkole a i ʻole ka manaʻo kiʻekiʻe, hiki iā ʻoe ke nānā i ka uwea, hoʻololi i ka sensor a i ʻole recalibrate.
3. Ke paʻa ʻole ka heluhelu ʻana, ma muli paha o ke kahe ʻana o ka ea i ka wā o ka calibration, ka hāʻule ʻana o ka sensor, a i ʻole ke kaapuni kaʻa.Hiki iā ʻoe ke hoʻoponopono hou, hoʻololi i ka sensor, a hoʻouna paha i ka hui no ka hoʻoponopono ʻana.
4. Keʻoi aku ka nui o ka hoʻopuka o kēia manawa ma mua o 25mA, ua hewa ke kaʻapuni puka i kēia manawa, pono e hoʻouna hou i ka hui no ka mālamaʻana, a hiki ke hoʻihoʻiʻia nā hewa'ē aʻe i ka hui no ka mālamaʻana.
Ka manawa hoʻouna: Jun-06-2022