Explanation of Environmental Impact on German HBM S9M Force Sensors

1. Environmental temperature

German HBMS9M force sensorCompensated for the influence of temperature on zero signal and sensitivity.

In order to obtain the best measurement results, it is necessary to adhere to the nominal (rated) temperature range. A constant or slowly changing temperature is the best choice. Measurement errors related to temperature are caused by heating (such as radiant heat) or cooling on one side. A radiation shielding and comprehensive insulation will result in significant improvements, but forced diverters must not be allowed.
　

2. Moisture

　　German HBMThe S9M series force sensor is sealed, so it is very insensitive to the impact of humidity.

The sensor meets the IP68 protection level specified in DIN EN 60259 (test condition: 100 hours under 1 meter of water column). However, the force sensor must be protected from permanent moisture effects.

The sensor must be protected to prevent chemicals from corroding the sensor body steel or cables. On stainless steel force sensors, it is important to note that acids and all materials that release ions can also corrode stainless steel and its welds.

Any corrosion caused by this can lead to the failure of the force sensor. In this case, appropriate protective measures must be taken.

3. Accumulation

Dust, dirt, and other foreign objects must not accumulate to the extent that they are sufficient to transfer some of the measurement force, thereby rendering the measurement invalid (force diversion). If dust or dirt deposits inside the force sensor, it may cause measurement errors. The arrows in the following figure mark the relevant areas.