The sensor body is usually made of aluminum or stainless steel, which gives the sensor two important characteristics: (1) provides the sturdiness to withstand high loads and (2) has the elasticity to minimally deform and return to its original shape when the force is removed. Structurally, a force sensor is made of a metal body (also called flexure) to which foil strain gauges are bonded. This same concept is also utilized in weight sensors. The strain applied in the load cell can be determined based on this principle, as strain gauge resistance increases with applied strain and diminishes with contraction. This change in shape causes the resistance in the electrical conductors to also change.
When it is pushed, it is contracted and gets shorter. When this film is pulled, it – and the conductors – stretches and elongates. Strain gauges are electrical conductors tightly attached to a film in a zigzag shape. pressure sensor), tension, compression, torque, weight, etc… into a change in electrical resistance, which can then be measured. In other words, it converts (or transduces) force, pressure (i.e. Metal foil strain gage is a sensor whose electrical resistance varies with applied force. How does a Load Cell Signal Conditioner work?įirstly, we need to understand the underlying physics and material science behind the load cell, which is the strain gauge (sometimes referred to as Strain gage). Thus, strain gauge load cell signal amplifier functions include excitation voltage, noise filtering or attenuation, signal amplification, and output signal conversion.Ĭheck out our Load Cell Signal Conditioner Store. The signal generated by the strain gage bridge is low strength signal and may not work with other components of the system, such as PLC, data acquisition modules (DAQ), computers, or microprocessors. Load cell Signal Conditioners provide regulated excitation voltage to the strain gage circuit and convert the mv/V output signal into another form of signal that is more useful to the user. What is a Load Cell Signal Conditioner and how do they work?
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