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標(biāo)準(zhǔn)鉑電阻溫度計(jì)一等標(biāo)準(zhǔn)和二等儀表的標(biāo)準(zhǔn)了解
日期：2025-11-07 17:29
瀏覽次數(shù)：3165
摘要：
標(biāo)準(zhǔn)鉑電阻溫度計(jì)一等標(biāo)準(zhǔn)應(yīng)滿(mǎn)足以下條件:
W (29.764 6℃)≥1.118 07 (5)
W (29.764 6℃)為溫度計(jì)在鎵熔點(diǎn)時(shí)的電阻值RGa與Rtp之比,W (29.764 6℃)=RGa/Rtp.
標(biāo)準(zhǔn)鉑電阻溫度計(jì)二等儀表可滿(mǎn)足下面兩個(gè)條件之一:
W (29.764 6℃)≥1.118 07
W (100℃)≥1.392 54 (6)
W (100℃)為溫度計(jì)在100℃時(shí)電阻值R(100℃)與Rtp之比,
W (100℃)=R (100℃)/Rtp.
W (29.764 6℃)≥1.118 07 (5)
W (29.764 6℃)為溫度計(jì)在鎵熔點(diǎn)時(shí)的電阻值RGa與Rtp之比,W (29.764 6℃)=RGa/Rtp.
標(biāo)準(zhǔn)鉑電阻溫度計(jì)二等儀表可滿(mǎn)足下面兩個(gè)條件之一:
W (29.764 6℃)≥1.118 07
W (100℃)≥1.392 54 (6)
W (100℃)為溫度計(jì)在100℃時(shí)電阻值R(100℃)與Rtp之比,
W (100℃)=R (100℃)/Rtp.
