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A compression load cell can fit mechanically yet remain unsuitable for an existing weighing input. Rated sensitivity determines signal size, bridge resistance affects excitation demand, and the installed load uses part of the available measuring range. Review all three before retaining the old instrument or combining sensors in one circuit.
Use the MV-LC0163 electrical data explicitly
The METRAVON MV-LC0163 is a central compression sensor. Its nominal sensitivity is 2.85 mV/V and nominal input resistance is 1450 ohm. These values differ from many other bridge sensors; the word compression does not define an electrical standard.
| Parameter | Nominal value | Input check |
|---|---|---|
| Sensitivity | 2.85 mV/V | Signal span at the proposed excitation and operating load. |
| Input bridge | 1450 ohm | Excitation current for the connected sensor network. |
| Excitation | 4-12 V DC | The selected supply must also meet the instrument's operating requirements. |
Calculate signal span and excitation demand separately
At 10 V excitation, nominal full-scale output is 2.85 mV/V multiplied by 10 V, or 28.5 mV. Check whether the receiving bridge input can accommodate this span together with the applicable zero offset and operating load. A nominal calculation helps select an input; it does not replace calibration of the individual sensor.
For four identical 1450 ohm input bridges connected in parallel, the nominal excitation load is 362.5 ohm. At 10 V, the total bridge current is approximately 27.6 mA. These calculated values exclude cable effects and other circuitry. Confirm that the indicator supports the complete network and that voltage at the cells remains within the required conditions.
Compression load cell replacement in a summed circuit
Do not mix cells solely because they have the same capacity. Differences in sensitivity, output resistance and mechanical load share can affect their contributions to a summed result. Obtain approval for the actual combination and junction-box arrangement; a single span adjustment cannot be assumed to correct every unequal channel response.
Keep sensor serial numbers, ratings, actual calibration values and terminal functions in the wiring record. Where a sensor is replaced, retain the old record and repeat the required installed checks. For contact and restraint issues, use the separate compression mounting guide.
Q1. Can a 2 mV/V indicator setting be kept for this sensor?
Not as an accepted calibration. First establish the input's usable range, then configure and calibrate against the new sensor and assembly. A displayed weight that looks plausible is not evidence that the sensitivity mismatch has been resolved.
Q2. Does electrical zeroing create more mechanical capacity?
No. The vessel or fixture preload remains on the sensor. Evaluate gross force independently from the input's zero-adjustment capability, and keep tare treatment consistent between the indicator and controller.
Summary
Submit the sensor count, ratings, cable arrangement and instrument input specification for an MV-LC0163 electrical compatibility review. Check excitation demand and signal range as separate requirements before approving a replacement.
