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Load cell types describe different ways of introducing force into a sensing structure. A beam, an S-type cell and a compression support are not alternative shapes of one interchangeable part. Start with the proposed connection, then compare the available models within that mechanical arrangement.
Load Cell Types: Match the Force Path to a Documented Model
| Structure | METRAVON example | Required fit check |
|---|---|---|
| Bellows beam | MV-LC0159; lower-capacity bending-beam construction. | Fixed-end support, loading hole and clearance around the bellows. |
| Cantilever | MV-LC0050; one end fixed and a defined loading region. | Base contact, load accessory and maximum individual support reaction. |
| S-type | MV-LC0099; axial tension and compression. | Opposing connections, alignment and calibration in each required direction. |
These examples illustrate distinct arrangements; they are not a complete substitution chart. A generic catalogue category can contain several constructions, so use the current drawing and product description to identify the actual model.
Exclude Structures That Cannot Fit the Machine
A hanging load needs a suitable tension connection. A platform needs a defined support layout. A pin sensor needs its bearing geometry to match the joint. If the machine cannot provide the intended connection without excessive side force or binding, reject that arrangement before comparing accuracy figures.
For MV-LC0099, bidirectional use also requires a stable compression fixture and appropriate tension fittings. A nominal capacity shared with a beam sensor does not establish either mechanical or electrical interchangeability.
Compare Specifications on the Same Basis
Distinguish error stated as a fraction of full scale from error at the actual working load. Keep nonlinearity, hysteresis, creep and repeatability separate unless the supplier defines a combined figure. Also distinguish safe overload from a usable calibrated range.
Check the input expected by the receiving electronics. Millivolts per volt describes bridge sensitivity; it is not a 0-10 V, 4-20 mA or digital output. Include excitation, resistance and the complete cable arrangement in the compatibility review.
Questions About Changing Sensor Type
Q1. Does one beam under a platform make it a single-point scale?
No. Single-point use needs an explicit permitted platform geometry and off-centre performance specification. The fact that a cantilever supports the platform does not establish that compensation.
Q2. Can a compression support be used for an occasional upward force?
Only if the selected sensor and assembly are designed for that load direction. Separate uplift restraint can protect the structure without making the sensor a bidirectional force instrument.
Q3. How should two technically suitable models be compared?
Compare the installed packages: attachments, instrument compatibility, usable measurement range, environmental construction and reference testing. A cheaper bare cell may require more mechanical redesign or different electronics.
Summary
Shortlist sensor types from the machine drawing and reject incompatible load paths first. Send the drawing and operating-force range for a METRAVON load cell selection review, with the existing indicator details when replacing equipment.
