9月2日,中國企業(yè)聯(lián)合會、中國企業(yè)家協(xié)會連續(xù)第十七年發(fā)布“中國企業(yè)500強”榜單及報告,國家電網(wǎng)、中國石化、中國石油繼續(xù)分列前三?!?018中國企業(yè)500強”入圍門檻首次突破300億元大關(guān),實現(xiàn)了16連升;企業(yè)營業(yè)收入總額首次突破70萬億元大關(guān),達(dá)到71.17萬億元,邁上新的臺階,營收較上年增長了11.20%,增速加快3.56個百分點,重回兩位數(shù)增速區(qū)間
測量參數(shù)         測量范圍                測量精度
pH            0-4pH                 ±0.01pH
ORP           -1500-+1500mV             ±1mV
接觸電導(dǎo)率        0.01μS/cm–600mS/cm           ±0.6%
環(huán)形電導(dǎo)率        1μS/cm–2000mS/cm            ±1%
余氯           0-20ppm                 ±1%
總氯           0-20ppm                ±1%
一氯胺          0-20ppm                 ±1%
溶解氧          0-20ppm                 ±1%
溶解臭氧         0-10ppm                 ±1%
濁度           0-20NTU                 ±2%
流量           0-99999GPM               ±1%,±0.5%
4-20mA輸入       0-20mA                 ±0.03mA
接觸電導(dǎo)率:1056-01-20-30-AN,1056-01-20-38-AN
      1056-02-20-30-AN,1056-02-20-38-AN
1056-03-20-30-AN,1056-03-20-38-AN
環(huán)形電導(dǎo)率:1056-01-21-31-AN,1056-01-21-38-AN
      1056-02-21-31-AN,1056-02-21-38-AN
1056-03-21-31-AN,1056-03-21-38-AN
pH變送器:1056-01-22-32-AN,1056-01-22-38-AN
      1056-02-22-32-AN,1056-02-22-38-AN
1056-03-22-32-AN,1056-03-22-38-AN
溶解氧變送器:1056-01-25-35-AN,1056-01-25-38-AN
       1056-02-25-35-AN,1056-02-25-38-AN
1056-03-25-35-AN,1056-03-25-38-AN
接觸電導(dǎo)率/環(huán)形電導(dǎo)率雙通道:1056-01-20-31-AN,1056-02-20-31-AN,1056-03-20-31-AN
接觸電導(dǎo)率/pH雙通道:1056-01-20-32-AN,1056-02-20-32-AN,1056-03-20-32-AN
接觸電導(dǎo)率/溶解氧雙通道:1056-01-20-35-AN,1056-02-20-35-AN,1056-03-20-35-AN
環(huán)形電導(dǎo)率/pH雙通道:1056-01-21-32-AN,1056-02-21-32-AN,1056-03-21-32-AN
環(huán)形電導(dǎo)率/溶解氧雙通道:1056-01-21-35-AN,1056-02-21-35-AN,1056-03-21-35-AN
pH/溶解氧雙通道:1056-01-22-35-AN,1056-02-22-35-AN,1056-03-22-35-AN