Kev faib cov qhab nia tseeb rau Petroleum Measuring Cans
Kev faib cov qhab nia tseeb rau Petroleum Measuring Cans (Standard Metal Measures)
Cov qhab-nees raug ntawm cov roj av ntsuas cov kaus poom tau muab faib ua feem raws li lub teb chaws kev ntsuas ntsuas cov cai. Hauv paus, lawv muab faib ua ob theem: Thawj-Class Standard Metal Measures thiab Second-Class Standard Metal Measures.
1. Thawj-Class Standard Metal Measures
Qhov siab tshaj qhov yuam kev: ± 0.01% rau ± 0.05% (feem ntau ± 0.025%)
Daim Ntawv Thov: Ua haujlwm raws li cov qauv ntsuas ntsuas thawj zaug; siv los ntawm cov koom haum metrology thiab cov koom haum pov thawj.
Muaj nuj nqi: Siv los txheeb xyuas Thib Ob-Class ntsuas cov kaus poom, flowmeters, roj dispensers, thiab lwm yam, thiab rau kev tshaj tawm cov nqi ntsuas.
2. Thib ob-Class Standard Metal Measures
Qhov siab tshaj qhov yuam kev: ± 0.1% txog ± 0.2%
Daim ntawv thov: Siv nyob rau hauv qhov chaw chaw ntawm cov roj depots, chaw nres tsheb roj, thiab cov roj tankers.
Muaj nuj nqi: Siv ncaj qha los xyuas cov roj dispensers thiab flowmeters; siv rau kev sib pauv kev lag luam thiab ntawm -site calibration.
Yooj yim piav qhia:
Thawj-Class=Laboratory Standard; siv los ntsuas lwm lub khob ntsuas.
Thib ob-Class=Teb-Txoj Cai Ua Haujlwm; siv ncaj qha los xyuas cov khoom siv roj.
