R76 - 1 Talobixinta Caalamiga ah ee No - Si otomaatig ah Qalabka miisaamaysa Waxay ka dhigtaa bartilmaameedka eber iyo eber dejinta arin aad u muhiim ah, oo aan kaliya qeexin shuruudaha cabbirka, laakiin sidoo kale shuruudaha farsamada, sababtoo ah xasilloonida eber ee qalab kasta oo miisaanka ah waa dammaanadda aasaasiga ah ee waxqabadka cabirka. Shuruudaha soo socdaa waxay si dhaw ula shaqeeyaan barta eber, waxaan sharaxnaa, falanqeeyaa.
(1) Khaladaadka Muujinta: Farqiga u dhexeeya qiimaha la tilmaamay ee baaxadda iyo qiimaha dhabta ah ee tirada u dhiganta (heshiiska).
(2) Khaladaadka ugu badan ee la ogolaan karo: Qiyaasta ku jirta booska tixraaca oo loo dejiyey eber oo aan lahayn culeys, farqiga ugu sarreeya ee ugu wanaagsan ama qiimaha u dhigma ee lagu go'aamiyo tirada tixraaca guud ama miisaanka caadiga ah ayaa lagula talinayaa in la oggolaado.
(3) Qalabka eber: aalad dejisa qiimaha la tilmaamay ee eber markii aysan jirin culeys xamuul. Miisaannada elektiroonigga ah, oo ay ku jiraan: semi - aaladda eber otomatiga ah, aaladda eber otomatiga ah, aaladda eber, aaladda eber, aaladda raadraaca eber, aaladda raadraaca eber.
(4) saxsanaanta eber: ka dib cabirka waa dhagxan, saamaynta qaladka eber ee natiijada miisaanka ah waa gudaha ± 0.25e.
(5) Khaladaadka Zero Position: Ka dib markii la dejiyo, barta eber ee cabirku wuxuu muujinayaa qaladka qiimaha, khaladaadka ugu badan ee la oggol yahay ee kala duwan ee ± 0.5e ee qalliinka ugu horreeya.
(6) Qalabka raadraaca eber: aalad si otomaatig ah u haysta qiimaha eber ee muujineysa qiimaha nooc gaar ah gudahood. Aaladda Raadinta Zero waa aalad otomaatig ah.
Qalabka Raadinta Zero wuxuu lahaan karaa afar gobol: Maya, ma ordo, oo socoto, kala duwanaanshaha hawlgalka.
Qalabka tegayga ee eber waxaa loo oggol yahay inuu shaqeeyo goorta:
- Qiimaha la tilmaamay waa eber, ama u dhiganta qiimaha miisaanka saafiga xun ee taban marka culeyska guud uu eber yahay;
- dheelitirkuna wuxuu ku jiraa xasilinta;
- Asluulku kama weyna 0.5 e / s.
1. Imtixaanka Aaladda Raadinta Eber
Sida ugu badan ee alaabada dheelitirka elektiroonigga ah ee Shiinaha waqtigan, waxaa jira aalad raadraaca eber, markaa baahida loo qabo in la tijaabiyo meesha eber ee qalad, waa inaad hubisaa in raadraaca eber uusan shaqeyn karin. Kadib, aaladda raadiyaha eber "ma maamusho" sida kaliya ee loo dhigo in miisaan culus oo culeys ah u dhow barta eber, si loo raaco eber ka baxsan xaddiga hawlgalka.
(1) Go'aaminta heerka sixitaanka ee aaladda raadraaca eber
Ujeeddada iyo habraacyada ku habboon ee nidaamka saxitaanka ee eber ee laguma go'aamiyo qaabkan, si taxaddar leh u kordhin tirooyinka sixitaanka, si ay u muujiso in tayada saadaasha ay si dhakhso leh u soo celiyaan. Sababtaas awgeed, qoraaga ayaa lagu soo koobay shaqada dhabta ah ee hab, si dhakhso ah ayaad duurka ugu qori kartaa si aad u hubiso heerka raadinta eber ee cabirka.
U leexo korantada, xasilinta ugu yaraan 30min, waxaad ku ridaysaa culeys 10e xamuul xamuul, si cabirku yahay "eber raadinta" waa mid ka baxsan tirada hawlgalka. Si tartiib ah usocota 0.3E rar xamuul ka mid ah 2-diimood oo fiirso qiimaha.
3 ka dib 3-xigta oo isku xigta 0.3e. Cabbirku wuxuu muujinayaa koror muhiim ah oo ah hal qaybood, taasoo muujineysa in aaladda uusan shaqeyn doonin ama uusan shaqeyn doonin.
Haddii cabirku u muuqdo mid aan muuqan qiimahoodu ka dib 3 xamuul oo ah 0.3e, unugga ayaa wali shaqeynaya oo raadraaca sixitaanka 0.5e / s.
Ka dib, si tartiib ah u saar 3 0.3e xamuul oo cabirku waa inuu muujiyaa hoos u dhac weyn oo ah hal qeyb.
Waa maxay sababta 3 0.3 loo istcimaalo?
Sanadkii 0.3e waxay ka yar tahay heerka sixitaanka ee 0.5E / s; Iyo 3-da 03e ee xamuulka ah waxay ka badan yihiin 0.5e / s iyo in ka yar heerka sixitaanka ee 1E / s (maxaa yeelay heerka sixitaanka loo baahan yahay ayaa lagu kordhiyaa 0.5E / s muddooyin kala duwan).
(2) si gaar ah u dhig inta culeys ah oo ka baxsan tirada eber-ka
R76, waqtiga imtixaanka ee su'aasha la isweydiinayo, ayaa loo baahan yahay culeys 10e ah in laga wareejiyo meel ka baxsan tirada raadraaca eber. Maxaad 5e culays u gaysaa, maxaa loogu talagalay 2-aad?
In kasta oo talooyinka caalamiga ah iyo qawaaniinta ay quseyso ay si cad u qeexeen in heerka sixitaanka aaladda eber ay tahay "0.5e / s", laakiin warshad badan oo miisaankiisuna ma dejinin heerka sixitaanka ee aaladda eber ee aaladda eber ee aaladda eber. Xitaa qaar ka mid ah qaar ka mid ah miisaaniyada qalabka wax lagu miisaamo, oo lagu dejiyey heerka ugu badan ee sixitaanka (hadda eeg heerka sixitaanka ugu badan ee 6e / s).
2. Hubinta saxda ah ee eber
If the weighing instrument does not have zero tracking function, or there is a special switch to close the zero tracking device, in the detection of “zero accuracy” and “zero error”, there is no need to put additional load (10e). The problem is that most of the weighing instruments in China are not equipped with a switch that can close the zero tracking device, and they all have the zero tracking function, so in order to get the zero error, we have to put an additional load (10e) to make it go beyond the zero tracking range when the scale is unloaded, so that we can get the accuracy of the zero setting “near zero” and the “zero error”. This results in a “near zero” zeroing accuracy. Sequentially place 0.1e additional weights until the value increases significantly by one division (I+e), and the total of the additional weights is ∆L, so that the zeroing error is: E0=10e+0.5e-∆L-10e=0.5e-∆L≤±0.25e. If the total of the additional weights is 0.4e, then: E0=0.5e-0.4e=0.1e<±0.25e. .
3. Meaning of determining zeroing accuracy
Ujeedada go'aaminta saxsanaanta dejinta eber waa in la hubiyo in xisaabinta "Khaladaadka sixitaanka ka hor sixitaanka ka hor intaan la sixi laheyn" oo lagu dhammeystirayo nidaamka dhajinta. Markaad hubinayso saxsanaanta cabir ahaan, ka hor - qalad sixitaan ah ayaa laga heli karaa qaaciddada: e = i + 0.e - z. Si si sax ah loo ogaado qalad ku saabsan meesha ugu macquulsan ee miisaanka qasaarada ah ee miisaanka, waxaa lagama maarmaan ah in lagu saxo qalad salafka eber, i. ec = e - ey≤mpe.
Ka dib markii la saxo qaladka miisaanka miisaanka ee qaladka, waxaa suurtagal ah in la saxo qiimaha waxyar ka badan khaladaadka ugu badan ee la oggol yahay, ama si loo saxo qiimaha u muuqda inuu u qalmo sida u qalma. Si kastaba ha noqotee, iyadoo aan loo eegin in sixitaanka uu yahay ama aan u qalmin, ujeeddada loo adeegsado qalad eber sicirka saxda ah ee la saxo xogta ayaa ah in natiijada baaritaanka ay u dhowdahay saxsanaanta dhabta ah ee cabirka.
4. Go'aaminta khaladaadka eber
Marka ugu horreysa, qalitaanka waa inuu go'aamiyaa qalad eber ah qiyaasta sidan: ka hor inta uusan ka saarin culeyska xamuulka xamuulka, ka dibna loo go'aamiyo khaladaadka xamuulka ah, ka dibna go'aamiso qalad salka ah ee 'Zero Point' ee loo yaqaan 'Zero Point' Bartilmaameedka, e = 10e + 0.5 e = 10e + 0.e - +l - 10e = 0.5 ΔLL≤ ± 0.5E. Haddii culeyska dheeriga ah uu uruursado 0.8e, markaa: e0 = 0.5E - 0.8E = - 0.3E<±0.5e.
Waqtiga Post: Agoosto - 14 - 2023