辐射测量仪在玻璃工业中的应用

本介绍了在玻璃工业中采用辐射测温仪进行非接触测温，控温时，为获得准确可靠的测量值，应如何正确安装，使用及维护辐射测温仪的经验。     

镜架光学参数测量仪校准方法研究

目前国内尚无镜架光学参数测量仪的校准规范,也没有相关计量标准和溯源方法保证光学参数测量仪量值的准确可靠。为了确保镜架光学参数测量仪的量值准确可靠,根据其工作原理和计量特性,使用光学标准镜片,通过试验与研究,提出了镜架光学参数测量仪的5项计量特性,并分析了其校准方法,为镜架光学参数测量仪的校准提供了技术依据。     

水体剖面温度测量仪的研制

研制了一种测量水体表面和水体剖面温度的仪器,详细阐述了该仪器的设计原理、具体结构、测试过程及最终的实验结果。水体剖面温度测量仪集辐射测温与接触测温于一体,可实现水体表面及以下1200mm不同位置水体剖面的温度测量;测量范围在0～40℃,辐射测量不确定度为0.24K,接触测量不确定度为0.12K;该仪器具有自动存储数据的功能,可漂浮在水面上连续自动测量2星期。     

油水两相单井测量仪的研制与应用

针对中高含水期的油井计量难题,研制试验了一种技术先进、稳定性好的新型油井在线连续计量装置,较好地解决了油井存在伴生气时的液量计量问题,提高了油井计量精度。     

全封闭压缩机转速测量仪的研制

本文介绍通过检测机器的振动周期来间接测定封闭式压缩机转速的方法。深入研究了各种可能引起测量误差的原因,并提出了解决办法。实验证明,所研制的以微处理器为基础的转速测试仪能排除各种干扰,工作稳定,读数准确可靠。     

智能型镀锡量测量仪的研制

依据库仑原理研制了智能型镀锡量测量仪,采用计算机记录阳极溶解曲线,可同时测量试样双面或单面的镀锡量,实现了以自动和人工方式判断溶解终点。仪器测试结果的重现性优于±0.1g/m~2,RSD<1％。     

The Crystal-Video Radiometer

A theoretical analysis is made of a microwave radiometer which utilizes no predetection amplification. The minimum detectable temperature, defined as the temperature which results in an output signal-to-noise ratio of unity, is shown to be (?/BM) (T0/2K?0)1/2 where B is the predetection bandwidth, M is the crystal figure of merit, T0 is the ambient temperature, K is Boltzmann's constant, and ?0 is the postdetection time constant. The predicted minimum detectable temperature for the millimeter wavelength region is about 50°K for a one-second postdetection time constant. Some experimental measurements are presented which show good agreement with the theoretical results. Because of the absence of predetection amplification, the sensitivity of the crystal-video radiometer is relatively poor; however, it is quite adequate for those applications where large temperatures are expected, such as gaseous discharge research. The simplicity of the crystal-video radiometer and its adaptability to complete solid-state instrumentation make it quite attractive for radiometric measurements from space probes and satellites.     

全天候气象专用B波段紫外辐照计的研制

研制了一种可全天候应用的B波段紫外辐照度及紫外指数测试系统，着重介绍其主要技术环节及性能，与国内现用的同类仪器进行了性能比对，分析了仪器试观测的结果。证明该仪器在带外杂光、余弦响应、温度控制等方面具有优良的性能，软件功能齐全，操作方便。     

一种新型电校准光辐射探测器特性的研究

对一种新型电校准辐射计的面响应不均匀性、线性和绝对响应度等特性进行了研究。在０．７～７５０μＷ范围内测得其线性度优于０．５％。面响应不均匀性的测量是利用小的激光光斑在探测器的灵敏面进行二维扫描。在探测器的主要灵敏面内,相对响应度与到探测器中心的距离表现为二次曲面关系。本对不同光斑大小、光束横截面上不同功率分布以及光斑入射到探测器表面的不同位置引起的测量误差进行了分析和研究。给出了是否需要修正的判据和需要修正时所应采用的修正方法,这种方法也适用于其它类型的电校准辐射计,利用该修正方法可以显降低测量不确定度。实验考查了面响应不均匀性的影响,实验结果证明了修正方法的正确性。     

Opto-Mechanical and Electronic Design of a Tunnel-Trap Si Radiometer

A transmission-type light-trap silicon radiometer has been developed to hold the NIST spectral power and irradiance responsivity scales between 406 nm and 920 nm. The device is built from replaceable input apertures and tightly packed different-size silicon photodiodes. The photodiodes are positioned in a triangular shape tunnel such that beam clipping is entirely eliminated within an 8 field-of-view (FOV). A light trap is attached to the output of the radiometer to collect the transmitted radiation and to minimize the effect of ambient light. The photodiodes, selected for equal shunt resistance, are connected in parallel. The capacitance and the resultant shunt resistance of the device were measured and frequency compensations were applied in the feedback network of the photocurrent-to-voltage converter to optimize signal-, voltage-, and loop-gain characteristics. The trap radiometer can measure either dc or ac optical radiation with high sensitivity. The noise-equivalent-power of the optimized device is 47 fW in dc mode and 5.2 fW at 10 Hz chopping. The relative deviation from the cosine responsivity in irradiance mode was measured to be equal to or less than 0.02 % within 5° FOV and 0.05 % at 8° FOV. The trap-radiometer can transfer irradiance responsivities with uncertainties comparable to those of primary standard radiometers. Illuminance and irradiance meters, holding the SI units (candela, color- and radiance-temperature), will be calibrated directly against the transfer standard trap-radiometer to obtain improved accuracy in the base-units.