What is Loadcell
A load cell is a sensor or a transducer that converts a load or force acting on it into an electronic signal. This electronic signal can be a voltage change, current change or frequency change depending on the type of load cell and circuitry used. There are many different kinds of load cells. We offer resistive load cells and capacitive load cells.
Resistive load cells work on the principle of piezo-resistivity. When a load/force/stress is applied to the sensor, it changes its resistance. This change in resistance leads to a change in output voltage when a input voltage is applied.
Capacitive load cells work on the principle of change of capacitance which is the ability of a system to hold a certain amount of charge when a voltage is applied to it. For common parallel plate capacitors, the capacitance is directly proportional to the amount of overlap of the plates and the dielectric between the plates and inversely proportional to the gap between the plates.
Calibrating a resistive load cell after amplification
Once the output signal is amplified to a known 0.5 to 4.5 VDC signal, then the user can feed it into a PLC or a Data Acquisition System (DAQ) and infer the applied loads. Once the output signal has been amplified, one can calibrate the load cell by applying known loads and calculating a linear equation that best fits the curve.
Load cell applied in wighing scales
1.Industries that manufacture and move bulk items utilize weighbridges to measure the flow of goods to and from locations. These weigh stations determine the mass of vehicles, whether empty or loaded, as they pass between state borders.
2.The information acquired is vital to those whose purpose it is to execute commerce values by weight (Trade Approved); or to those checking gross vehicle weights; or even at weigh stations monitored by the government across various roads and highways.
3.Weighbridges utilize multiple wheel shape Load Cells (LFC Family), capped with Flat Load Plates, for accurate measurement readings along the weighing platform.
4.Multiple load cell connected by a junction box, recombination signal display by a indicador and output a analog. RS232 or RS485 transmitter to PC for easy control and analyse.
Product-Miniature tension & compression Loadcell (Model T301)
Principle: force transducer can have one or more after the stress of elastic body, and can detect the shape of the variable resistance strain gauge of money circuit, and the resistance strain gauge fixed paste on the elastomer and can conduct should be variable, such as adhesive and sealant to protect electronic circuit of three most force transducer. After the stress function, resulting in the elastic problem of strain gages deformation resistance, resistance change overbalance the bridge of output with external force linearly proportional change electricity signal, so as to realize the transformation of non-electricity to power
1. Miniature load cell,low profile,small deflection
2.Made of stainless steel
3.Tension and compression application
4.Mainly used for pull and push dynamometer,hopper scale and industrial measuring system
Miniature Compression and Tension Load Cells with High Dynamic Frequency are mainly applied intension and pressure testing instruments and automatic equipments fields, such as insertion force test instruments, lifting hook scales, riveting machine, welding machine, hot&cold lamination mac
|Rated output||1.0±10%mV/V||Recommended excitation||5~10V|
|Zero balance||±10% F.S.||Maximum excitation||15V|
|Non-linearity||0.2%F.S.||Compensated temp range||-10~60ºC|
|Hysteresis||0.2%F.S.||Operation temp range||-20~80ºC|
|Temp.effect on output||0.05%F.S./10ºC||Cable size||φ2×1500mm|
|Temp.effect on zero||0.05%F.S./10ºC||Weight approx.||0.1kg|
|Input impedance||1000±100Ω||Material||Stainless Steel|
|Output impedance||1000±100Ω||IP Class||IP66|
Product-compression load cell (Model SNHB)
--Aluminum alloy construction
--Low profile design,easy to install
If you have any questions,please do not hesitate to contact me.