Mastering Measurement: Yako Yekupedzisira Gwaro kune Mhedziso, Hukama, uye Yakazara Chikero (% FS) Kanganiso

Wakambotarisa here pepa rezviteuroapressuretransmitter,akuyereramita, kanaatembiricha sensoruyewakaona chinhu chemutsara se "Kururama: ± 0.5% FS"? Iyo yakajairwa kutsanangurwa, asi zvinorevei chaizvo kune iyo data yauri kuunganidza? Zvinoreva here kuti kuverenga kwese kuri mukati me 0.5% yeukoshi hwechokwadi? Sezvinoonekwa, mhinduro yacho yakati tsigiro, uye kunzwisisa kuomarara uku kwakakosha kune chero munhu ane chekuita neinjiniya, kugadzira, uye kuyerwa kwesainzi.

Kukanganisa chikamu chisingadzivisiki chenyika yenyama. Hapana chiridzwa chakakwana. Kiyi ndeyekunzwisisa mamiriro echikanganiso, kuverengera, uye kuve nechokwadi kuti chiri mukati memiganho inogamuchirwa kune yako chaiyo application. Gwaro iri rinozodzima pfungwa huruofkuyerwakukanganisa. Inotanga netsananguro dzehwaro uye yobva yawedzera kuita mienzaniso inoshanda uye yakakosha misoro ine hukama, ichikushandura iwe kubva kune munhu achangoverenga izvo kune mumwe munhu anonzwisisa chaizvo.

 

Chii chinonzi Measurement Error?

Mumoyo make,kuyerwa kukanganisa musiyano pakati pehuwandu hwakayerwa nehuwandu hwahwo hwechokwadi, hunokosha chaihwo. Funga nezvayo semukana uri pakati penyika semaonerwo azvinoitwa nemudziyo wako nenyika sezvazviri chaizvo.

Kukanganisa = Kuyerwa Kukosha - Kukosha Kwechokwadi.

Iko "Kukosha Kwechokwadi" ipfungwa yedzidziso. Mukuita, ukoshi hwechokwadi hwakakwana haungambofa hwakazivikanwa nehuchokwadi hwakakwana. Pane kudaro, kukosha kwechokwadi kwakajairika kunoshandiswa. Uhwu mutengo unopihwa nechiyero chekuyerwa kana chiridzwa chereferensi chine chokwadi zvakanyanya (kazhinji kakapetwa ka4 kusvika ka10) pane chiri kuedzwa. Semuyenzaniso, kana calibrating aakabata ruokopressuregauge, iyo "yakajairika kukosha kwechokwadi" yaizotorwa kubva kune yakakwirira-chaiyo,laboratori-giredhipressurecalibrator.

Kunzwisisa iri nyore equation ndiro danho rekutanga, asi haritauri nyaya yacho yese. Kukanganisa kwemamirimita 1 hakuna kukosha pakuyera kureba kwepombi yemamita zana, asi iko kutadza kukuru kana uchigadzira piston yeinjini. Kuti tiwane mufananidzo uzere, tinofanira kuratidza chikanganiso ichi nenzira dzine musoro. Apa ndipo panopinda mhedziso, hama, uye zvikanganiso zvereferensi.

Kuunganidzwa kweZvikanganiso Zvitatu Zvekuenzanisa

Ngatiburitsei nzira nhatu dzekutanga dzekuverenga nekutaurirana kukanganisa kuyerwa.

1. Mhedziso Kukanganisa: The Raw Kutsauka

Mhedziso kukanganisa ndiyo yakapfava uye yakananga nzira yekukanganisa. Sezvinotsanangurwa mugwaro rekwakabva, ndiwo mutsauko wakananga pakati pekuyera uye kukosha kwechokwadi, kunoratidzwa muzvikamu zveyero pachayo.

Formula:

Muenzaniso:

Uri kuyera kuyerera kwepombi nechokwadiflow rateof50 m³/h, uyewakokuyerera kwemamitaanoverenga50.5 m³/h, saka kukanganisa kwese kuri 50.5 – 50 = +0.5 m³/h.

Zvino, fungidzira kuti uri kuyera imwe nzira ine kuyerera kwechokwadi kwe500 m³/h, uye kuyerera kwako mita kunoverenga 500.5 m³/h. Mhedziso kukanganisa ichiri +0.5 m³/h.

Inobatsira riini? Mhedziso kukanganisa kwakakosha panguva yecalibration uye kuyedzwa. Chitupa che calibration chinowanzo nyora kutsauka kwakazara panzvimbo dzakasiyana dzebvunzo. Zvisinei, sezvinoratidzwa nomuenzaniso, haina mashoko akapoteredza. Mhedziso kukanganisa kwe +0.5 m³/h inonzwa yakanyanya kukosha pachiyero chidiki chekuyerera pane iyo hombe. Kuti tinzwisise kukosha uku, tinoda kukanganisa.

2. Chikanganiso Chikanganiso: Iko kukanganisa muChimiro

Chikanganiso chinopa mamiriro ezvinhu asina kukanganisa zvachose. Inoratidza kukanganisa sechidimbu kana muzana yeukoshi chaihwo huri kuyerwa. Izvi zvinokuudza kuti kukanganisa kwakakura sei maererano nehukuru hwechiyero.

Formula:

Muenzaniso:

Ngatitarisei muenzaniso wedu:

Pakuyerera kwe50 m³/h: Chikanganiso chehukama = (0.5 m³/h / 50 m³/h) × 100% = 1%

Kuyerera kwe500 m³/h: Chikanganiso chinokanganisa = (0.5 m³/h / 500 m³/h) × 100% = 0.1%

Kamwe kamwe, musiyano wacho unojeka zvikuru. Kunyangwe kukanganisa kwakakwana kwaive kwakafanana mune zvese zviri zviviri, chikanganiso chehukama chinoratidza kuti kuyerwa kwakapetwa kagumi kune kuderera kwekuyerera.

Nei izvi zvine basa? Chikanganiso chehukama chiratidzo chiri nani chekushanda kwechiridzwa pane imwe nzvimbo yekushandisa. Inobatsira kupindura mubvunzo wekuti "Chiyero ichi chakanaka sei izvozvi?" Nekudaro, vagadziri vezviridzwa havagone kunyora chikanganiso chehukama kune yega yega kukosha kwaungayera. Vanoda metric imwe chete, yakavimbika yekuvimbisa kuita kwechishandiso chavo mukati mese kugona kwayo kushanda. Ndiro basa rereferensi kukanganisa.

3. Reference Error (%FS): The Industry Standard

Uku ndiko kurongeka kwaunoona kazhinji pamadatabase: kunyatsoita senge muzanaofFullChikero (%FS), inozivikanwawo sereferensi kukanganisa kana kukanganisa kwepakati. Panzvimbo yekuenzanisa kukanganisa kwakakwana kune ikozvino yakayerwa kukosha, inoienzanisa nehupamhi hwepakati (kana huwandu) hwechiridzwa.

Formula:

Iyo Measurement Range (kana Span) ndiwo mutsauko uripo pakati pehupamhi uye hudiki kukosha iyo chiridzwa chakagadzirirwa kuyera.

Muenzaniso Wakakosha: Kunzwisisa %FS

Ngatimbofungidzira iwe unotengaapressure transmitterpamwezvirevo zvinotevera:

• Range: 0 kusvika 200 bar

• Kunyatsoita: ± 0.5% FS

Danho 1: Verenga iyo Yakakura Inotenderwa Mhedziso Kanganiso.

Kutanga, tinowana kukanganisa kwakakwana kuti chikamu ichi chinoenderana ne: max absolute kukanganisa = 0.5% × (200 bar - 0 bar) = 0.005 × 200 bar = ± 1 bar.

Uku ndiko kuverenga kwakakosha, kunotiudza kuti zvisinei nekumanikidza kwatiri kuyera, kuverenga kubva kuchiridzwa ichi kunovimbiswa kuve mukati me ± 1 bar yekukosha kwechokwadi.

Danho 2: Ona Kuti Izvi Zvinobata Sei Kururama Kwehukama.

Zvino, ngationei kuti iyi ± 1 bar kukanganisa zvinorevei pamapoinzi akasiyana muhuwandu:

• Kuyera kumanikidzwa kwe100 bar (50% yehuwandu): Kuverenga kunogona kuve chero kubva pa99 kusvika ku101 bar. Iko kukanganisa kwehukama panguva ino ndeye (1 bar / 100 bar) × 100% = ± 1%.

• Kuyera kudzvanywa kwe20 bar (10% yehuwandu): Kuverenga kunogona kuve chero kubva pa19 kusvika ku21 bar. Iko kukanganisa kwehukama panguva ino ndeye (1 bar / 20 bar) × 100% = ± 5%.

• Kuyera kudzvanywa kwe200 bar (100% yehuwandu): Kuverenga kunogona kuve chero kubva 199 kusvika 201 bar. Iko kukanganisa kwehukama panguva ino ndeye (1 bar / 200 bar) × 100% = ± 0.5%.

Izvi zvinoburitsa musimboti wakakoshera wechiridzwa chekuti chiridzwa chakanyanya kunaka chiri pamusoro pechikamu chayo uye chakaipisisa pazasi.

Inoshanda Takeaway: Ungasarudza Sei Chimbo Chakakodzera?

Hukama huri pakati pe %FS uye kukanganisa kwakadzama kune simba guru pakusarudza chiridzwa.Iyo idiki yekukanganisa kwereferenzi, inokwirisa kurongeka kwese kwechiridzwa. Nekudaro, iwe unogona zvakare kuvandudza kuyerwa kwechiyero nekungosarudza iyo chaiyo renji yechishandiso chako.

Mutemo wegoridhe wekuyera saizi ndeyekusarudza chiridzwa uko yako yakajairika mashandiro maitiro inowira muhafu yepamusoro (chaizvo, epamusoro maviri-matatu) eiyo yakazara-chiyero chiyero. Ngatitorei muenzaniso:

Fungidzira maitiro ako anowanzo shanda nekumanikidzwa kwe70 bar, asi anogona kuve nepamusoro kusvika ku90 bar. Uri kufungapiritransmitters, zvese zvine ± 0.5% FS kunyatsoita:

• Transmitter A: Range 0-500 bar

• Transmitter B: Range 0-100 bar

Ngativerengei kukanganisa kunogona kuitika kune yako yakajairika yekushanda nzvimbo ye70 bar:

Transmitter A (0-500 bar):

• Max absolute kukanganisa = 0.5% × 500 bar = ± 2.5 bar.

• Pa70 bar, kuverenga kwako kunogona kudzimwa ne2.5 bar. Mhosho yako yechokwadi ndeye (2.5 / 70) × 100% ≈ ± 3.57%. Uku kukanganisa kukuru!

Transmitter B (0-100 bar):

• Max absolute kukanganisa = 0.5% × 100 bar = ± 0.5 bar.

• Pa70 bar, kuverenga kwako kunogona kudzimwa ne0.5 bar chete. Mhosho yako yechokwadi ndeye (0.5 / 70) × 100% ≈ ± 0.71%.

Nekusarudza chiridzwa chine chiyero chakakodzera "chakadzvanywa" chekushandisa kwako, wakavandudza huyero hwako hwepasirese nezvikamu zvishanu, kunyangwe zviridzwa zvese zvaive nechiyero chakafanana che "%FS" pamapepa avo.

Kururama kunopesana. Precision: Musiyano Wakakosha

Kuti unyatsogona kuyerwa, imwezve pfungwa yakakosha: mutsauko uripo pakati pekururama uye nemazvo. Vanhu vanowanzo shandisa mazwi aya vachichinjana, asi musainzi neinjiniya, vanoreva zvinhu zvakasiyana kwazvo.

Kururamaisseikuvhara kuyerwa ndiko kukosha kwechokwadi. Inechekuita nekukanganisa kwakakwana uye kwakasiyana. Chimbo chakarurama, paavhareji, chinopa kuverenga kwakarurama.

Precisionisseikuvhara zviyero zvakawanda zvechinhu chimwe kune mumwe nemumwe. Rinoreva kudzokororwa kana kuenderana kwechiyero. Chimbo chaicho chinokupa kuverenga kwakafanana nguva imwe neimwe, asi kuverenga ikoko handiko chaiko.

Heino fananidzo yechinangwa:

• Kwakajeka uye Kwakajeka: Yese mapfuti akanyatsobatanidzwa pakati pebullseye. Izvi ndizvo zvakanakira.

• Zvakajeka asi Zvisina Kurongeka: Mapfuti ako ese akanyatsobatanidzwa pamwe chete, asi ari kumusoro-kuruboshwe kona yechinangwa, kure nebullseye. Izvi zvinoratidza kukanganisa kwakarongeka, sekunge chiyero chisina kurongeka papfuti kana sensor isina kurongeka. Chiridzwa chinodzokororwa asi chinoramba chisina kunaka.

• Zvakaringana asi Zvisina Kujeka: Mapfuti ako akapararira pese pachinangwa, asi nzvimbo yavo yepakati ndiyo yepakati pebullseye. Izvi zvinoratidza kukanganisa kwakangoerekana kwaitika, uko kuyerwa kwega kwega kunochinja zvisingatarisike.

• Hazvina Kurongeka kana Kunyatsojeka: Mapfuti anopararira zvisina tsarukano pese pachinangwa, pasina kuwirirana.

Chiridzwa chine 0.5% FS kutsanangurwa chirikuda kurongeka kwayo, nepo iko kurongeka (kana kudzokororwa) kuchiwanzo kurongwa sechinhu chakasiyana chemutsara padhetedhete uye kazhinji idiki (iri nani) nhamba pane huchokwadi hwayo.

Mhedziso

Kunzwisisa nuances yekukanganisa ndiko kunoparadzanisa injinjiniya yakanaka kubva kune yakakura.

Muchidimbu, kugona kuyerwa kukanganisa kunoda kusimuka kubva kune zvakakosha pfungwa kuenda kune inoshanda application. Mhedziso kukanganisa kunopa kutsauka kwakashata, chikanganiso chehukama chinochiisa mukati meyero yazvino, uye chikanganiso chereferensi (% FS) inopa vimbiso yakamisikidzwa yekukanganisa kukuru kwechiridzwa mukati mehuwandu hwayo hwose. Chinhu chakakosha chekutora ndechekuti chiridzwa chakanyatsotsanangurwa uye kuita kwayo kwepasirese hakuna kufanana.

Nekunzwisisa kuti yakagadziriswa %FS kukanganisa kunokanganisa sei kurongeka pachiyero, mainjiniya uye matekiniki vanogona kuita sarudzo dzine ruzivo. Kusarudza chiridzwa chine chiyero chakakodzera chekushandisa kwakakosha sechiyero chekururama kwayo, kuve nechokwadi chekuti data rakaunganidzwa chiratidzo chakavimbika chechokwadi.

Nguva inotevera paunoongorora dheti uye woona chiyero chechokwadi, iwe unonyatsoziva zvazvinoreva. Iwe unogona kuverenga iyo yakanyanya kukanganisa kukanganisa, kunzwisisa kuti iko kukanganisa kuchakanganisa sei maitiro ako munzvimbo dzakasiyana dzekushanda, uye kuita sarudzo ine ruzivo iyo inova nechokwadi chekuti data raunounganidza haisi nhamba chete pachiratidziro, asi chiratidzo chechokwadi chechokwadi.

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