Load cell
A load cell is a sensor that converts load or force into an electrical signal. A metal strain body (flexure element that deforms slightly under load) carries strain gauges, and a Wheatstone bridge circuit extracts the deformation as a voltage change. Output is expressed in mV/V per volt of excitation, and an indicator or amplifier converts it to a load value. Forms include beam, single-point, column, S-type, button, and low-profile compression types, and load direction is classified as compression, tension, or both. Applications include weighing scales, hopper and tank scales, bottling machines, small measuring instruments, and force measurement in manufacturing processes such as mold internal pressure measurement.
-
Load cell
Compact Compression-Type Force Sensor LSMS Series / Mold Internal Pressure Measuring Instrument MPC-201-25
Model: MPC-201-25
A measurement system that measures and records mold internal pressure waveforms of injection molding machines. Supports real-time waveform display.
Minebea Mitsumi Inc.
-
Load cell
CB004W Load Cell
Model: CB004W
Single-point load cell with all-stainless steel hermetically sealed construction. For marine scales and bottling machines.
Minebea Mitsumi Inc.
-
Load cell
CM085 Compact Compression Load Cell
Low-profile, compact compression load cell. Screw mounting possible with stopper.
Minebea Mitsumi Inc.
-
Load cell
CC010 Series High-Precision Double Convex Compression Load Cell
Self-aligning compression load cell for hopper and tank scales. All-stainless-steel hermetically sealed construction, OIML C3 compliant.
Minebea Mitsumi Inc.
How to choose Load cell
-
1. Select a capacity with margin above maximum load
Rated capacity is the maximum load that can be measured; listed products range from 2 to 2000 N. Select based on the maximum value including tare weight and impact loads, with margin to spare. However, an oversized capacity reduces resolution, so confirm that the normal operating load falls within an appropriate proportion of the rated capacity.
-
2. Match load direction and form to the installation
The supported load direction (compression, tension, or both) determines the usable applications. Choose the form based on installation space and how the load is applied: single-point type for platform scales with off-center loads, self-aligning compression type for tanks, and low-profile or button types for confined spaces.
-
3. Compare measurement accuracy by nonlinearity
Nonlinearity is the deviation from a straight line relative to rated output; listed products range from 0.023 to 0.15% R.O. Also check hysteresis and repeatability. For trade-use scales, whether the product complies with an accuracy class such as OIML R60 C3 is also a useful criterion.
-
4. Confirm rated output matches the indicator
Rated output is the output per volt of excitation at rated load; listed products range from 1 to 2 mV/V. Verify that the input range, recommended excitation voltage, and input/output resistance of the connected indicator or amplifier are compatible. When using multiple units in parallel, also check that their outputs are matched.
-
5. Select a protection rating suited to the environment
For fisheries, food, and beverage lines exposed to water or cleaning fluids, products rated IP68 or hermetic sealing (airtight sealing by welding or similar methods) are suitable. In environments with only dust, IP64 may be sufficient. Also confirm the operating temperature range.
-
6. Judge corrosion resistance by strain body material
Strain body materials include aluminum alloy, alloy steel, and stainless steel. For corrosive environments or applications with frequent washdown, all-stainless-steel construction is preferable. Where impact is expected, also check the allowable overload value and whether overload stoppers are fitted.
This guide was written by AI based on the listed products' documents and specification items. Check each manufacturer's documents before adopting.