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 Posted: Sat 16:38, 11 Dec 2010 Post subject: ugg boots billig Swsy-A dual-Pressure Humidity Gen |
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Swsy-A dual-Pressure Humidity Generator
y-A dew point meter (M1500) deviation of P / p. T / ℃ TCTd / ℃ RH △ RH10.6020.942O. 9 - 10.0510.450.1514.9O2O. 982O. 9-6.3614.430.472O. OO21. O321. O a 2.6119.820.1829.9O21. O721.02.793O. OO a 0.104O. 1O21.1121.16.964O. OO0.105O. OO21.1521.110.1849.7O0.30% 59.7O% 21.1721.112.8959.300.4069.8O21.2221.215.3569.3O0.508O. 4O21.2421.217.5579.800.609O. 5O% 21.3O21.219.489.6O% 0.9094.8O21.3421.320.393.9O% 0.90 Table 2 Experimental records (Experiment No. 030301 (2)) Swsy-A dew point meter (M1500) deviation P / pT | cT / CTdfcRH △ RH94.8O21.3621.32O. 393.9O0.9089.9O% 21.3821.319.5789.9O0.0079.9O21.4021.317.779.8O0.1069.8O21.4321.415.6369.8O0.0059.9O21.4621.413. 336O. OO% a 0.1049.8O% 21.4821.410.5449.800.00% 4O. OO% 21.5321.57.324O. OO% 0.0029.9O21.5521.53.263O. 1O a 0.2O% 20.1O% 21.6O21.5-1.992O. 2O a 0.10% 15.1O21.6421.5-5.6214.77% 0.331O. 7O21.7221.6-9.5910.370.33 because of pressure sensor accuracy by 0.15, the accuracy of the pressure ratio is high, so the key is saturated slot generator saturation, although saturation is only one slot Level Bubble saturated, but because of air into the tank itself is saturated compressed air, high humidity, so the total saturation is high,[link widoczny dla zalogowanych], can reach 99 or more, so can guarantee the accuracy of the generator. The experimental data, from the total, Swsy-A type of humidity generator are 1RH accuracy range, but large deviations in high humidity conditions, in 1.5RH range. Analysis of the reasons is the slot for a Bubble saturated saturated tank,[link widoczny dla zalogowanych], the humidity, because saturation tank pressure is low, base saturation from the high pressure gas compressor by the precision pressure regulator vacuum, into unsaturated air (10RH ~ 20RH),[link widoczny dla zalogowanych], saturated by a Bubble is difficult to achieve high saturation,[link widoczny dla zalogowanych], so without amendment, the occurrence of moisture should be low and less when the pressure of saturated tank, pressure sensors measure the relative lower accuracy, so Swsy-A dual-pressure humidity generator 85RH ~ 95RH larger error and lower range is reasonable. By a large number of experiments show that when the environmental conditions to meet the laboratory temperature of 5 ~ 50. C,[link widoczny dla zalogowanych], humidity 10RH ~ 95RH range, and the gas source provides gas flow 3L/min, lobar pressure oil-free compressed air filters, place in the whole range of humidity within 10RH ~ 95RH, Swsy-A Humidity Generator The technical indicators are to meet the requirements of humidity standards of measurement, in which uncertainty: 1RH (10RH ~ 85RH), 1.5RH (10RH ~ 95RH); Response time: <1min; Stability: ± 0.1RH; repeat sex: who 0.2RH. 5 Conclusion In summary, Swsy-A dual-pressure humidity generator specifications to meet most of the humidity sensor calibration verification requirements, and can be used as humidity standards of measurement. The design is reasonable, easy to use as a calibration laboratory for calibration of the instruments should be widely applied. References [1] Li Ying dry, Fan Jinpeng. Humidity measurement EM3. Beijing: Meteorological Press, 1990. [2] Liao Li. Thermal measurement of EM3. Beijing: Atomic Energy Press, 2002. E33 Pan Xinmin, Wang Yanfang. Micro-computer control technology EM3. Beijing: Electronic Industry Press. 2003.
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