超低霜点湿度发生器研制

doi:10.3969/j.issn.1000-1158.2024.02.03

Abstract
Figure/Table
References (19)
Related Citation (15)

Download: PDF (670 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract A novel ultra-low frost point generator (CIMM-TH) has been developed by using the two-temperature and two-pressure method in the frost point temperature range from -110℃ to -20℃. The core components of the saturator and thermostat were optimized, and the saturation efficiency of the saturator was verified by using two modes of “evaporation” and “condensation”. Under different saturation temperature and pressure conditions, a cold mirror precision dew-point meter and a micro-moisture meter were used to compare with the generator. The test results show that when the frost point temperature is -90℃, the deviation between the dew-point meter and the generator is 0.02℃. When the saturation pressure is 1MPa and the saturation temperature is -99.60℃, the deviation of frost point temperature between the micro moisture meter and the generator is 0.04℃. The uncertainty factors affecting the measurement results of the generator are analyzed systematically. The expanded uncertainty of the generator is 0.38℃, 0.20℃ and 0.19℃ at the frost point of -110℃, -90℃ and -20℃, respectively, k=2.

Key words： thermal metrology;ultra-low frost point temperature humidity generator saturation uncertainty evaluation

Received: 06 April 2023 Published: 21 February 2024

PACS:

TB943

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HU Yanqing
	Meng Su
	CHAI Yuan
	CHEN Jiexin
	Lü Guoyi
	NIE Jing

Cite this article:

HU Yanqing,Meng Su,CHAI Yuan, et al. Development of Ultra-low Frost Point Generator[J]. Acta Metrologica Sinica, 2024, 45(2): 157-163.

URL:

http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.02.03 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I2/157

［3］	MOHA MMADI K, SHAMSHIRBAND S, MOTAMEDI S, et al. Extreme learning machine based prediction of daily dew point temperature ［J］. Computers & Electronics in Agriculture, 2015, 117(20): 214-225.
［15］	巩娟, 吕国义, 何萌. 负温环境下相对湿度参数校准装置研制及试验测试［J］. 计量学报, 2015, 36(z1): 55-69.
［19］	邹伟. 冷却镜面凝析湿度计法检测天然气水露点的不确定度评定［J］. 计量学报, 2019, 40(z1): 150-153.
	XIA Y G, PENG Y Z, LIU Z H, et al. Measurement uncertainty of linear regression fitting ［J］. Acta Metrologica Sinica, 2023, 44(4): 664-670.
［2］	BAGHBAN A, BAHADORI M, ROZYN J, et al. Estimation of air dew point temperature using computational intelligence schemes ［J］. Applied Thermal Engineering, 2016, 93(10): 1043-1052.
［13］	张文东, 张勇. 宽温压力可变标准湿度发生器的研制［J］. 计量学报, 2012, 33(4): 326-330.
［8］	CHOI B I, NHAM H S, WOO S B, et al. The New KRISS low frost-point humidity generator ［J］. Int J. Thermophys, 2008, 29(2): 1578-1588.
	ZOU W. Uncertainty evaluation of detecting dew point of natural gas water by cooling mirror condensation hygrometer ［J］. Acta Metrologica Sinica, 2019,40 (z1): 150-153.
［12］	SAIRANEN H, HEINONEN M, HGSTRM R, et al. Low-pressure and low-temperature dew/frost-point generator ［J］. International Journal of Thermophysics, 2018, 39(18): 104.
［6］	NIE J, MENG X F, LI N. Quartz crystal sensor using direct digital synthesis for dew point measurement ［J］. Measurement, 2018, 117(8): 73-79.
［5］	BLANK T A, EKSPERIANDOVA L P, BELIKOV K N. Recent trends of ceramic humidity sensors development ［J］. Sensors & Actuators B: Chemical, 2016, 228(4): 416-442.
	ZHANG W D, ZHANG Y. Development of variable standard humidity generator with wide temperature and pressure ［J］. Acta Metrologica Sinica, 2012, 33 (4): 326-330.
［1］	WILKES A, WILLIAMS D, HARDY B,et al. Measurement of Humidity ［J］. Anaesthesia & Intensive Care Medicine, 2015, 16(2): 128-131.
［4］	NIE J, MENG X F, LIN L. High-accuracy quartz crystal resonance DP instrument ［J］. IEEE Transactions on Industrial Electronics, 2020, 67(2): 8026-8033.
［16］	裴全斌, 闫文灿, 沈超, 等. 基于可调谐半导体激光吸收光谱法测定天然气水露点技术研究［J］. 计量学报, 2021, 42(1): 117-122.
［17］	余云飞, 孟晓风, 张卫军. 双温双压法湿度测量不确定度的综合评定［J］. 宇航计测技术, 2009, 29(4): 16-21.
［18］	夏玉国, 彭友志, 刘正华, 等. 线性回归拟合的测量不确定度［J］. 计量学报, 2023, 44(4): 664-670.
［7］	TIAN J, MENG X F, NIE J, et al. High accuracy frequency extraction based on sigma-delta ADC applied in resonant dew point sensor ［J］. Measurement, 2018, 199(20): 77-84.
［9］	CHOI B I, LEE S W, WOO S B, et al. Extension of humidity standards to -105 ℃ frost point ［J］. Int J. Thermophys, 2015, 36(6): 2231-2241.
［10］	LEE S W, CHOI B I, WOO S B, et al. Development of a low-temperature low pressure humidity chamber for calibration of radiosonde humidity sensors ［J］. Metrologia, 2019, 56(2): 025009.
［11］	CUCCARO R, ROSSO L, SMORGON D, et al. Development of a low frost-point generator operating at sub-atmospheric pressure ［J］. Meas. Sci. Technol, 2018, 29(2): 054002.
［14］	SCACE D C, HOVDE J T. The calculation of the enhancement factor in the humidity［C］//In Proceedings of 3rd International Symposium on Humidity and Moisture. Teddington,London, 1998.
	GONG J, L G Y, HE M. Development and test of relative humidity parameter calibration device in negative temperature environment ［J］. Acta Metrologica Sinica, 2015, 36 (z1): 55-69.
	PEI Q B, YAN W C, SHEN C H, et al. Study on dew-point measurement of natural gas water based on tunable semiconductor laser absorption spectrometry ［J］. Acta Metrologica Sinica, 2021, 42(1): 117-122.
	YU Y F, MENG X F, ZHANG W J. Comprehensive evaluation of uncertainty of Humidity Measurement with double temperature and double pressure method ［J］. Aerospace Metrology and Measurement Technology, 2009, 29(4): 16-21.