Aiming at problem of influence of bubbles on output of conductivity sensor

experimental schemes under different gravity conditions is proposed. Through theoretical analysis

it is concluded that the existence of bubbles makes the sensor output smaller. Through the ground

overweight and weightlessness test data

it is concluded that the main factor affecting the sensor output is system flow. The experiment shows that when the flow rate is greater than 300 m L/min

bubbles are discharged and the output of the sensor is not affected. When the flow is less than 30 m L/min

the sensor is greatly affected by it. There are two states of bubble

discharge and being discharged. The real test data make a comprehensive and correct evaluation on sensor performance.