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Load Cells Inc., established in 1979, designs and manufactures a complete line
of load cells, torque sensors, special purpose transducers and related instrumentation.
Load Cells Inc. load cells are uniquely designed for
weighing and force measurement in such diversified applications as process control,
factory automation plus hundreds of other services in every field of science and
industry. All transducer sensing elements incorporate bonded foil strain gages
wired in a full wheatstone bridge configuration.
TECHNOLOGY
Load cells
are electro-mechanical transducers that translate force or weight into voltage.
This change in voltage produces, in the read-out instrumentation, a repeatable
deflection or indication that can be calibrated directly in terms of the load
applied to the cell. CONSTRUCTION
Construction of the load
cell utilizes all the advantages of bonded foil strain gages . Sealed within the
load cell are sets of matched strain gages bonded to a high strength element,
machined to close tolerances. The strain gages are electrically connected to form
a balanced Wheatstone bridge and additional compensation resistors are added to
the circuit for maintaining the accuracy of the bridge over a wide temperature
range. OPERATION
The principle
of operation depends upon the deflection of the strain gage filament, creating
a change in its resistance, thereby unbalancing the bridge circuit. As a result,
for a given input voltage, the output voltage of the bridge varies proportionally
with the load and the change can be read on appropriate instrumentation. QUALITY
When completed,
each load cell is individually tested and calibrated. Each cell must meet or exceed
rigid electrical and mechanical performance tests before it is released for service.
Also, every cell is proof tested to its full rated capacity, and in most instances,
to over its rated capacity. ATTRIBUTES
An important
asset of our load cells is their extremely small deflection. The maximum deflection
of standard cells does not exceed .012" at full load. This plus the fact that
these load cells contain no moving parts, opens unlimited application fields.
The inherent compactness of the cells minimizes installation problems. The
frequency response characteristics of our load cells are exceptionally good. The
relatively low mass, and the small deflection under load, result in a high frequency
response which emphasizes use of the cells in many services where other transducers
cannot perform. Only
strain gages of the highest quality are installed and configured by technicians
who have undergone our extensive training program targeting craftsmanship and
attention to detail. To the end user, this means a quality product. All Load Cells
/ Force Sensors, and Torque Sensors are supplied with a Calibration Certificate
traceable to NIST. | 
