因为有总浮时是负数。
粥煮沸时，请把浮沫撇去。
其他低油位情况发生，比如慢漏油时，浮控开关也会有动作。
This same switch will also operate on low oil level, such as a slow oil leak.
浮充电压值在不同的温度时应进行修正。
Float charging pressure values in different temperature should be revised.
当液位处于高位或低位时，浮球开关动作，发出报警信号。
When the level is high or low the float switch Works and alarms.
当液位处于高位或低位时，浮球开关动作，发出报警信号。
When the level is high or low the float switch Works and alarms.
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