Most of the sensors are made of stainless steel but there is a problem when a wet sample comes into contact with stainless steel influencing the reliability of the value obtained.

• 原因是，多数的测量传感器都是用不锈钢做成的，当潮湿的样品与不锈钢接触时就会产生一些变化，从而会影响到数值的可靠性及稳定性。