Environmental factors affecting the performance of weighing sensors

The performance of each weighing sensor varies depending on the environment. Before installing the measurement system, planners should conduct a comprehensive analysis of the environmental factors that affect the load cell, maintain the load cell application in a controlled environment, and use equipment indoors as much as possible to reduce the environmental impact. When the weighing sensor must be applied outdoors, the design of the measurement system (including calibration) will need to mitigate the impact of additional environmental factors to obtain accurate readings. These environmental factors include temperature, wind, precipitation, ice, sunlight, humidity, other electrical systems, and ground conditions.

　　temperature

If the ambient temperature fluctuates, please use a temperature compensated load cell. This information appears in the load cell data sheet. Uncompensated equipment performs poorly at extreme temperatures, therefore it is important to protect them from the effects of radiation heat and cooling systems. Installing protective covers or insulation around equipment can provide protection against extreme temperatures.

　　Moisture

If there is moisture in the operating environment or is affected by precipitation, when selecting a load cell model, it is necessary to consider its performance in a humid environment, and the protection level can be checked as a parameter indicator. Moisture can cause a short circuit in the current, leading to measurement errors and often damaging the load cell.

Take preventive measures to avoid corrosion of the weighing sensor device and bracket, and regularly inspect both. When the equipment may be exposed to damp environments, please use non corrosive metals such as stainless steel. In addition, keep the load cell and surrounding surfaces dry. Check for cracks and pitting caused by corrosion that may cause damage to the weighing sensor and equipment malfunction.

　　electromagnetic interference

Stray current may interfere with the reading of the weighing sensor and is another possible source of equipment damage. Properly cover and secure all wiring and lighting. Ground the mounting bracket of the load cell to the specifications outlined by the manufacturer to avoid welding near the load cell, as the stray current generated by welding can seriously damage the components.

Magnetic and electric fields can interfere with the weighing system signal. To avoid this situation, please place the load cell, connecting cables, and electronic equipment in a shielded enclosure.

　　Flammable and explosive environment

Load cells that meet the corresponding explosion-proof level must be selected for use in this environment.

Flammability and explosiveness not only cause complete damage to sensors, but also pose a significant threat to other equipment and personal safety. Therefore, sensors operating in flammable and explosive environments have higher requirements for explosion-proof performance: explosion-proof sensors must be selected in flammable and explosive environments. The sealing cover of such sensors not only needs to consider their airtightness, but also the explosion-proof strength, as well as the waterproof, moisture-proof, and explosion-proof properties of cable leads.