Micro Load Cells
A load cell is a sensor or transducer that transforms a load acting on it into an electrical signal. There are two main kinds of load cells: capacitive load cells and resistive load cells. The micro load cell falls under the category of the resistive load cells, which work with the principle of zero piezo-resistivity, meaning that when a load/force/stress is applied to the sensor, the resistance is changed. Because the resistance is changed, the output voltage is also changed (because the input voltage has been changed).
Quick links to Micro Load Cells Information
Applications of Micro Load Cells
Applications for load cells include:
- Weighing Scales
- Non-Invasive Medical Sensors
- Aerospace or Industrial Measurements
- Pharmaceutical Testing
These load cells are mainly used for compression force measurement and are suitable for cramped locations, which require high precision and high endurance. They are very accurate and have high responses and high output signal levels. They are mainly designed for use in small applications as the name implies and are based on piezo resistive metal foil or thin film strain gauges. Depending on the manufacturer, these micro load cells have weight capacities that range from 10 grams to 2000 pounds. The height of micro load cells is usually less than 10 mm with low studs, which go as low as 3.3 mm. Also, depending on the manufacturer, there are options for micro load cell designs that support subsea application needs.
Factors to Consider When Purchasing Micro Load Cells
One thing buyers should be aware of is that micro load cells and other load cells in general are only designed to measure force in one direction or are designed to measure for at a certain point, and they generally ignore all other forms of force or pressure being applied.
Benefits of Using Micro Load Cells
Micro load cells offer certain benefits like having a low profile, single point platform, cost-effectiveness, long term stability, and low hysteresis. Micro load cells are usually designed and manufactured using thin film strain gauge processes for greater stability and accuracy. Also, depending on the applications, most manufacturers are willing and able to make custom micro load cells for their customers.