Kev siv ppm hauv rangefinders
1mm+1ppm yog cov ntawv luv luv rau 1mm+1ppm x D (kilometers), uas qhia txog qhov nominal qhov tseeb ntawm tag nrho cov chaw nres tsheb lossis rangefinder. Qhov twg.
1mm, sawv cev ntawm qhov ntsuas qhov yuam kev, feem ntau tshwm sim los ntawm qhov ntsuas ntxiv rau qhov kev txiav txim siab tsis tu ncua, qhov yuam kev hauv nruab nrab, phasing yuam kev, qhov yuam kev ruaj khov tsis muaj kev sib raug zoo nrog qhov ntsuas qhov deb. Ntawd yog, txawm tias qhov ntsuas qhov deb npaum li cas, qhov chaw nres tsheb tag nrho yuav muaj qhov yuam kev ruaj khov tsis ntau dua li tus nqi.
1ppm × D kilometers sawv cev rau qhov kev ua yuam kev proportional, qhov twg 1 yog qhov sib npaug ntawm qhov yuam kev coefficient, uas feem ntau yog tshwm sim los ntawm qhov ntsuas zaus yuam kev, atmospheric refractive index yuam kev. ppm yog lub ntsiab lus ntawm qhov chaw ib lab (ob peb), D yog tag nrho cov chaw nres tsheb lossis rangefinder qhov tseeb ntsuas ntawm tus nqi nyob deb, chav tsev yog kilometers. Raws li qhov tseeb ntsuas qhov deb hloov, qhov proportional yuam kev ntawm qhov ntsuas no kuj hloov proportionally. Piv txwv li, thaum qhov kev ncua deb yog 1 km, qhov proportional yuam kev yog 1 hli.
Rau qhov ntau qhov tseeb ntawm 1mm + 1ppm tag nrho qhov chaw nres tsheb lossis rangefinder, thaum ntsuas qhov deb ntawm 1 km, qhov ntsuas qhov tseeb ntawm 1mm + 1ppm × 1 (kilometer)=2mm, uas yog hais tias, tag nrho cov chaw nres tsheb los ntsuas qhov kev ncua deb ntawm 1 km, qhov siab tshaj plaws ntau yam yuam kev tsis ntau tshaj 2 hli.
3 vib nas this yog lub sij hawm ntsuas qhov deb
Handheld laser rangefinder yuav siv li cas
1, raug loaded roj teeb, xyuam xim rau roj teeb polarity.
2, txoj kab ncaj nraim ntsuas: txoj kab ncaj nraim ntsuas, laser rangefinder feem ntau siv zog. Tom qab lub hwj chim ntawm lub ntsuas khawm ntsuas cov ntawv nyeem.
3, kev ua haujlwm ntawm kev sib txuas: kev siv lub hypotenuse (txoj hlua) thiab qhov ntev ntawm sab (strand) ntev kom pom qhov siab ntawm lwm sab (nqus). Txoj haujlwm no daws qhov teeb meem ntawm qhov siab ntsuas.
4, thaj tsam ntsuas kev ua haujlwm: ntsuas qhov kev ncua deb ntawm ob sab ntawm qhov ntev ntawm nws cheeb tsam.
5, ntim ntsuas muaj nuj nqi: ntsuas qhov ntev, qhov siab, dav thiab nws ntim.
