Can strain gauges work around the clock for 2-3 years?

Question

Electronics

In outdoor conditions, it is necessary to constantly collect "one box" telemetry. The most important indicator is constantly changing weight. Weight range from 50 to 150 kg. A change in 50g is already a whole event. Can strain gauges with constant use show degradation that will affect the accuracy of the readings? And what is this degradation indicator actually called, so that when choosing a model I would be guided by it?

Answer 1

Concrete production load cells are made of stainless steel and fully sealed (IP68), which ensures their long-term operation in almost any environment, including high temperature, direct water, snow, fog, high humidity and direct sunlight. The operating temperature range is from -40° to 80°C, with minimal temperature changes in characteristics. proof . In general, if the limits of change for the sensor are acceptable, you need to rely on its warranty period, which any device has (not too much Chinese).

Answer 2

According to the experience of working at the flour mill:
A standard bag of flour is 50 kg. The permissible error in dosing is 100 g. The correctness of dosing is checked on the scales at the beginning of the shift and after lunch - they throw the bag on the scales and look at the result. According to the result, an adjustment is driven into the dispenser (the crap is such on the microcontroller that pours flour into a container suspended on a load cell. As soon as a dose of 50 kg has been accumulated, the flour is poured into a bag).
It's not clear from the question what it is. A load has been hanging on the sensor for 2 years and you need to track the change in its weight over time? Or is it stupidly weighing people?

Answer 3

Intuition did not deceive, I found an indicator called Creep - the percentage change in readings per unit of time. For example, in 30 minutes of constant load, the readings can change by 0.03%, these are the same 50g. Thanks to Serozha , they made me think that I was approaching the problem incorrectly, I need to think from the side of the product's economy, suddenly it will allow me even 200g of error :)