Vibrating wire osmometer is one of the main sensor of dam seepage monitoring or reservoir

river level monitoring. The accuracy of the measured values directly affect the assessment of the safety of the dam

so longterm stability and accuracy of osmometers measured value is essential. Large temperature effect coefficient has been considered the main factor which influence accuracy and stability of measured value of osmometers

and also the key technologies to enhance the quality of the osmometers. Comprehensively analyze on temperature influencing factors of vibrating wire osmometers

including material linear expansion coefficient

technique processing and sensitivity of sensitive components and corresponding solutions for the above influencing factors is proposed

the osmometers is improved. Experiments show that the improved vibrating wire osmometers has low temperature effects and high accuracy.