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Shear-beam load cell types should be distinguished by their support and loading arrangement, not simply by the word beam in a catalogue. A single-ended device and a differently supported beam need different mountings. Replacing one with the other can change the load path even when capacity and electrical sensitivity appear similar.
Read the support pattern before the model label
The METRAVON MV-LC0150 is a documented single-ended shear beam. Its two fixing holes belong at one end; the opposite connection introduces load. That layout is not a drawing for a centrally loaded, two-ended assembly or a single-point platform sensor.
| Drawing clue | What to establish | Fit risk |
|---|---|---|
| Fixing points | Which surfaces are constrained and how fasteners react force. | Clamping a part intended to deform or move. |
| Load point | Specified foot, link or other force introduction. | Applying weight at the wrong location or with an added moment. |
| Clearance | Space around the measuring body throughout loading. | Unintended contact bypassing or distorting the measurement. |
| Adjustment | Permitted height and alignment provisions. | Using improvised spacers to conceal a mismatched assembly. |
Shear-beam load cell types are not capacity-only substitutions
Even within MV-LC0150, capacity groups have different fixing-hole spacing, body length and loading threads. Select the rated version before machining a base. Keep the chosen drawing revision with the order so a later capacity change triggers a dimensional review.
Compare the indicator requirements separately. A mechanically compatible cell can still have an unsuitable excitation or bridge characteristic for the existing circuit. For a multiple-cell platform, review the complete set and summing arrangement rather than accepting a replacement from its individual label alone.
Use a drawing comparison to decide whether to retain the mount
Mark the old and proposed contact surfaces, fixing centres, load height and cable exit on one comparison. Identify every discrepancy explicitly. If a difference requires welding, drilling or changing a restraint, the work is an assembly modification, not a drop-in sensor replacement.
After an approved substitution, repeat position-dependent mounting checks as well as zero and span. A satisfactory central load does not demonstrate behaviour at the platform edges or after unloading.
Q1. Is every beam suitable for a single-cell platform?
No. A single-point application needs documented platform size and off-centre performance for the chosen model. The single-ended construction of MV-LC0150 does not by itself establish that qualification.
Q2. What is needed to review an unidentified old beam?
Provide its nameplate, dimensions, fixing and loading photographs, wiring functions and installed load range. Missing identity data should remain an open compatibility issue, not be replaced with an assumption based on shape.
Summary
Compare support patterns first, then capacity-specific dimensions and electrical data. Submit the marked drawing comparison for a shear-beam replacement quotation before reusing the mounting hardware.
