单位换算对照表.doc

1、单位换算对照表单位换算1、长度单位1 in = 25.4 mm1 ft = 0.3048 m1 mile = 1609.3 m1 micron =10-6 m2、质量单位1 lb = 453.61 cwt = 50.8 Kg1 ton(imp) = 1016 Kg1 top(up) = 907.2 Kg1 tonne = 1000 Kg3、力矩单位1 inlb = 0.113 Nm1 ftlb = 1.356 Nm1 kgm = 9.807 Nm1 ft poundal = 0.0421 Nm4、温度单位( F- 32) x 5/9 = C K-273.15 = C5、功及能量单位1 lbft

2、 = 1.356 J1 Nm = 1 J1 kgm = 9.807 J1 kW/hr = 3.6 MJ6、面积单位1 in2 = 6.45 cm21 ft2 = 0.093 m27、压力单位1 psi = 6.89 kPa1 kgf/cm2 = 98.07 kPa1 bar = 100 kPa1 bar = 14.5 psi1 atmosphere = 98.1 kPa1(STANDARD) = 101.33 kPa1 cm water = 97.89Pa1 in water = 248.64 Pa1 mm mercury = 133.3 Pa1 in mercury = 3.39 kPa1

3、Torr = 133.3 Pa1 ft water = 0.0298 bar1 bar = 33.33 ft water8、体积单位1litre = 0.001 m31 cu.ft. = 0.0283 m31 cu.in.= 16.39 cm31 gal(imp) = 4.546 L1 gal(us) = 3.79 L1 fluid oz.(imp) = 28.41 mL1 fluid oz.(us) = 29.57 mL9、力单位1 lbf = 4.45 N1kgf = 9.81 N1 kp(kilopond) = 9.81 N1 poundal = 138.3 mN1 ton force

4、= 9.964 kM10、功率单位（功/时间）1 lbft/sec = 1.356 W1 kgm/sec = 9.807 W1Nm/sec = 1 W1 Nm/sec = 1 W1 Joule/sec = 1 W1 H.P.(imp) = 745.7 W11、流量单位Cv值：水流量(US gal/min)于60 F下，流经差压为1psi之阀门而所得出之流量定值。（ Cv X 1000=l/min )kv值：水流量 (L/ min)于20 F下，流经差压为1kgf/cm2之阀门而所得出之流量定值。KV值: 水流量 (m3/ min)于20 F下，流经差压为1kgf/cm2之阀门而所得出之流量定值

5、。S值：气动元件有效截面积（mm2)流量系数之间的转换：CV = 1.17 KV S = 18.45 CVS.T.P = 标准温度及压力 （0 C 及101.3 kPa绝对压力）N.T.P = 正常温度及压力 （20 C 及101.3 kPa绝对压力）M.S.C = 公制标准情况 （15 C 及101.3 kPa绝对压力）ANR = 温度：20 C及相对湿度：65%12、等值换算1 psi = 6.895 kPa =0.07 kg/cm2 = 0.06895 bar = 0.0703 atm1 standard atmosphere = 14.7 psi = 101.3 kPa = 1.013

6、25 bar1 kg/cm2 = 98.07 kPa = 14.22 psi = 28.96 ins mercury 1 ft lb = 0.13826 kgm = 1.356 Nm1 L = 1000 cm3 = 1.7598 pint = 106 mm31 tonne = 1000 kg = 0.984 ton = 2205 lb1 m3 = 106 cm31 cu ft/min = 0.0283 m3/min = 28.3 l/min1 Pa = 1 N/m213、单位缩写单位缩 写单位缩 写PascalPaNewtonNmetremlitreLWattWNewton metreNmJo

7、uleJMegajouleMJ KelvinK1MPa1*106pa=106N/m2=1012N/mm2 1MPa1*106pa=106N/m2=1.02*105KGF/mm21 bar=105 Pa1MPa=10kg/cm2 # P$ Z: q) d: h- H+ o化学,考研,资料,试题,笔记,课件,复试6 E- y0 H5 B. 8 O3 B( ?工程上人们常说的多少公斤压力指kg/cm2,而压力表上常标的是MPa. , G8 e/ c; ; # h化学学习考研复试调剂，提供免费真题笔记课件教材等，为化学工作者提供学习和科研、工作等的网络交流平台小蚂蚁化学社区6 j6 A o! S1 $ F9 M/ B1N/m2=1Pa 1kg=9.8N 1m2=10000cm2 ( |- 5 / rs 所以 1kg/cm2=98KPa=0.098MPa & p5 t4 J* % 7 U w+ w7 n- s化学学习考研复试调剂