Five Common Causes of Load Cell Errors
1. Feature error. It is caused by the device itself, including DC drift values, incorrect slope or non-linear shape of the slope. After all, there will be a gap between the ideal transfer function characteristics of a device and the actual characteristics.
2. The application error of the load cell. That is, errors caused by operation, including incorrect placement of the probe, incorrect insulation between the probe and the measurement location, errors in the air or other gas purge process, incorrect placement of the transmitter, and other operational errors. mistake.
3. Dynamic errors. A sensor suitable for static conditions will be heavily damped and therefore slow to respond to changes in input parameters, and may even take several seconds to respond to a step change in temperature. Some load cells with delay characteristics can produce dynamic errors when responding to rapid changes. Response time, magnitude distortion, and phase distortion all contribute to dynamic errors.
4. Insertion errors. It is the error caused by changing the measurement parameters when inserting the sensor into the system. Using a transmitter that is too large for the system, the dynamic characteristics of the system being too slow, too many self-heating loads in the system, etc. can all lead to insertion errors.
5. Environment error. The use of load cells is also affected by the environment such as temperature, swing, vibration, height, and chemical substance volatilization. These factors can easily cause environmental errors.
