Galaxy Surfactants Interview Questions and Answers

Sensitivity of a load cell refers to the smallest change in weight that can be accurately detected by the load cell.

• Sensitivity is typically measured in mV/V or % of full scale output per unit of weight change.

• Higher sensitivity means the load cell can detect smaller weight changes.

• Factors affecting sensitivity include material properties, design, and calibration.

• Example: A load cell with a sensitivity of 2 mV/V can accurately detect a weight change of 2 grams for every 1 kg ...read more

2mV/V or 3mV/V refers to the sensitivity of a strain gauge sensor.

• mV/V stands for millivolts per volt, indicating the output voltage change per unit change in input

• 2mV/V means the sensor output voltage changes by 2 millivolts for every volt of excitation voltage

• 3mV/V means the sensor output voltage changes by 3 millivolts for every volt of excitation voltage

To check earthing on power supply, use a multimeter to measure the resistance between the earth terminal and a known earth point.

• Use a multimeter set to resistance mode

• Connect one probe to the earth terminal of the power supply

• Connect the other probe to a known earth point (e.g. a metal water pipe)

• A low resistance reading indicates good earthing

• A high resistance reading indicates poor earthing

Components of an electronic weighing scale include load cells, display unit, microcontroller, and power supply.

• Load cells: convert the force of the weight into an electrical signal

• Display unit: shows the weight measurement to the user

• Microcontroller: processes the signal from the load cells and controls the display

• Power supply: provides the necessary power for the scale to function

A load cell is a transducer that converts force into an electrical signal.

• Load cells are commonly used in industrial applications to measure weight or force.

• They are often found in scales, industrial equipment, and testing machines.

• Load cells can be made from various materials such as steel, aluminum, or even piezoelectric crystals.