1. Ambient temperature.
The German HBM S9M force transducer compensates for the effect of temperature on zero signal and sensitivity.
In order to obtain the best measurement results, the nominal (rated) temperature range must be observed. A constant or slowly changing temperature is the best option. Temperature-dependent measurement errors are caused by side-side heating (e.g. radiant heat) or cooling. A radiation shield and total thermal insulation can produce significant improvements, but must not allow for the installation of forced shunts.
2. Moisture. German HBM S9M series force transducersIt is hermetically sealed and therefore very insensitive to the effects of humidity.
The sensor achieves IP68 protection according to DINN 60259 (test conditions: 100 hours under 1 meter of water). However, the force transducer must be protected against the effects of permanent moisture.
The sensor must be protected from chemical attack on the sensor body steel or cables. On stainless steel force transducers, it is important to note that acids and all materials that release ions can also corrode the stainless steel and its welds.
Any resulting corrosion can cause the force transducer to fail. In such cases, appropriate protective measures must be taken.
3. Accumulation.
Dust, dirt and other foreign objects must not accumulate enough to transfer part of the measured force and thus invalidate the measured value (force splitting). If dust or dirt is deposited inside the force sensor, this can lead to measurement errors. The arrows in the image below mark the areas of interest.