The experimental testing of the reduced scale model turbine is an important phase to obtain the performance characteristics of the prototype because the characteristics are difficult to obtain from theoretical calculations. A specially designed hydraulic test facility following the guidelines of international standards is generally used to obtain the performance characteristics of model turbine. These characteristics are transposable to the prototype turbines. The model turbine test facility is also used for the research and development work by the designers and scientists. The accuracy of the results obtained is entirely dependent on the instrumentation, calibration and uncertainty estimation. In the present study, the instrumentation and calibration procedure of a model Francis turbine test facility is presented by following the guidelines of international electrotechnical commission. The instruments such as flow meter, inlet and differential pressure transducers, torque sensors, angular position sensors and temperature sensors are calibrated using primary and secondary methods. The calibration curves and uncertainties involved in different instruments are obtained and presented. Both systematic and random uncertainties involved in hydraulic efficiency measurements are also presented. The maximum total uncertainty is ±0.15% in the hydraulic efficiency of model Francis turbine at best efficiency point.

缩小比例模型涡轮机的实验测试是获得原型性能特征的重要阶段，因为很难从理论计算中获得这些特征。通常使用遵循国际标准准则的专门设计的液压测试设备来获得模型涡轮机的性能特征。这些特性可转换为原型涡轮机。模型涡轮机测试设施也被设计师和科学家用于研发工作。获得的结果的准确性完全取决于仪器，校准和不确定性估计。在目前的研究中，按照国际电工委员会的指南，介绍了弗朗西斯模型涡轮机测试设备的仪器仪表和校准程序。诸如流量计，入口和压差传感器，扭矩传感器，角位置传感器和温度传感器之类的仪器使用一级和二级方法进行校准。获得并给出了不同仪器所涉及的校准曲线和不确定度。还介绍了水力效率测量中涉及的系统性和随机性不确定性。在最佳效率点，混流式水轮机的水力效率的最大总不确定度为±0.15％。角位置传感器和温度传感器使用主要和次要方法进行校准。获得并给出了不同仪器所涉及的校准曲线和不确定度。还介绍了水力效率测量中涉及的系统性和随机性不确定性。在最佳效率点，混流式水轮机的水力效率的最大总不确定度为±0.15％。角位置传感器和温度传感器使用主要和次要方法进行校准。获得并给出了不同仪器所涉及的校准曲线和不确定度。还介绍了水力效率测量中涉及的系统性和随机性不确定性。在最佳效率点，混流式水轮机的水力效率的最大总不确定度为±0.15％。