Chinese
Spanish
Russian
Portuguese
French
German
Indonesian
Thai
Vietnamese
Arabic
Italian
Turkish
Polish
Japanese
METRAVON MV-LC0191 is an S-type load cell with UNF threaded connections for hanging-scale and tensile-force applications. Its capacity list uses lb and klb, with klb denoting one thousand pounds. The mounting thread changes between capacity groups, including groups with the same body envelope. An enquiry should identify the exact rating, thread and output version rather than request an unspecified S-type replacement.
Match the UNF thread before reusing a rod end
The 25-200 lb drawing uses 1/4-28 UNF, whereas 250-300 lb uses 3/8-24 UNF. Both groups have A/B/C dimensions of 50.8/63.5/12.7 mm. Equal outside dimensions therefore do not establish a matching connection. The 2-3 klb group uses 1/2-20 UNF, 5-10 klb uses 3/4-16 UNF, and 20 klb uses 1 1/4-12 UNF. Check the selected drawing, thread engagement and attachment strength before retaining any existing fittings.
Specify which S-type load cell output the reader will receive
The electrical entries include 2.0 +/-0.002 mV/V and 3.0 +/-0.003 mV/V. They are alternative sensitivity specifications, not a selectable industrial voltage range. At the same excitation, the nominal rated signals differ by a factor of 1.5. Identify the offered version and verify the indicator input before ordering; the old span calibration cannot be assumed correct for the other sensitivity.
| Item | Value | Selection notes |
|---|---|---|
| lb rating choices | 25, 50, 100, 200, 250, 300, 500, 750 lb | Retain the original units on drawings and purchase documents. |
| klb rating choices | 1, 2, 2.5, 3, 5, 10, 20 klb | A drawing group is not a list of every available rating. |
| Bridge resistances | 385 +/-10 / 351 +/-2 ohms | Input / output; compare with the installed reader. |
| Excitation range | 4-12 V DC; maximum 15 V DC | Use a bridge measuring input, not a general current-loop channel. |
| 30-minute creep | +/-0.02% FS | Assess indication change over the required load-hold interval. |
| Working temperature | -30 to +70 deg C | Consider the actual sensor exposure in the installation. |
| Safe / ultimate overload | 150 / 200% FS | Review peak force without treating these figures as working ratings. |
Resolve cable details for the selected imperial rating
The cable note uses metric capacity groups rather than the lb and klb groups in the rating list. It does not unambiguously assign a standard cable length to each imperial version. Request confirmation of the four-core cable length, wiring identification and material for the exact ordered sensor. This is particularly important where an existing enclosure fixes the distance between the sensor and its measuring input.
Check the assembled pull, not just the bare sensor
Submit the upper and lower attachment arrangement and keep the tensile force on the threaded axis. Include fixture weight and any force peaks from taking up slack. During commissioning, compare reference loads at several working points, repeat the loading and inspect the return to zero. The listed C3 classification does not define the accuracy or approval of a completed suspended weighing assembly.
Imperial thread and replacement questions
Q1. Can the same fittings connect a 200 lb and a 250 lb sensor?
Their listed bodies share an envelope, but the thread changes from 1/4-28 UNF to 3/8-24 UNF. Check the actual mating parts and the installed force axis. Neither matching body size nor a higher nominal capacity makes the old thread correct.
Q2. Does the dimensional group extending to 1.5 klb establish a 1.5 klb offer?
The discrete capacity list and dimensional groups are different parts of the specification. Order against an explicitly confirmed rating; do not infer an additional rating from the endpoint of a dimensional group. Request confirmation if the required load is not in the published capacity list.
Q3. What should an imperial replacement enquiry include?
Provide the old nameplate, capacity with units, UNF thread specification, complete attachment length and reader model. Add the cable route, required material and reference-loading procedure. Ask for the offered output sensitivity and delivered cable details to be stated on the quotation.
