Taking 1# boiler of Qiaotou aluminum electrolysis company power branch for example, the paper introduces the work principle,installation and adjustment of material level monitoring technology of ball mill and TCS-200 monitoring device,including the effect of using the technology.

The technique through sinter temperature monitoring to modulating power frequency of cooler fan motor was presented in this paper.

Using the displacement monitoring information,the soil body principle of balance,the support design principle of wall-protection pile instructs the difficult problem of the support and protections of deep hole excavated for building foundation is adapted to the enlargement of foundation depth.

In view of the work of under ground-cut tunnel beneath railway bridge the underpinning construction method of its pile foundations under dynamic loads is introduced as well as lifting transition technique and displacement monitoring method, which provide good references for pile foundation underpinning and bearing capacity transition under complex geological condition.

Development of ultrasonic liquid-level monitoring instrument based on MSP430 microcontroller;