SSA_z-1型便携式潮位仪是以计算机控制晶体压力传感器作为水下探头的无井验潮仪,因为探头是放于水下,因此大气压力、水温、盐度、重力加速度、波浪、涌潮、海流等因素的变化都会给潮位测量带来误差,本文论述了上述诸因素给潮位测量带来的影响及提高 SSA_z-1潮位仪精度的措施. SSA_z-1 portable tide gauge is a computer-controlled crystal pressure sensor as a underwater probe without tide gauge, because the probe is placed under water, so atmospheric pressure, water temperature, salinity, gravity acceleration, wave, gushing, Current and other factors will bring errors to the tide level measurement. This article discusses the above-mentioned factors that affect the tide level measurement and measures to improve the accuracy of SSA_z-1 tide gauge.