MNM MS720-1K 1,000 lb x 0.1 lb Tension/Compression Scale Guide
- pete8781
- Jul 30
- 3 min read
Phone: (832) 290-3120 | Email: mnmscales@yahoo.com
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MNM MS720-1K 1,000 lb x 0.1 lb Tension/Compression Scale Guide
The MNM MS720-1K is a calibrated 1,000 lb x 0.1 lb S-type tension/compression force system with Peak Hold, a portable digital indicator, rechargeable power, two eye bolts and RS-232 capability. It targets hanging, pull-force, winch, cable, hoist, test-stand and general push/pull measurement where a 1,000 lb range provides enough capacity.
Verified MNM listing details
Capacity/readability: 1,000 lb x 0.1 lb
Alloy-steel S-type load cell with two eye bolts
Peak Hold plus zero, gross/net, accumulation, printing, counting, checkweighing and auto-hold functions listed
Selectable lb/kg units and RS-232 output
Rechargeable indicator with power supply; listing describes a 6V rechargeable battery
Plastic enclosure with bracket/hardware and large backlit six-digit display
Listing states support for up to eight 350-ohm load cells, gravity adjustment, 6000e, max 30,000d and 0.3 µV/e
What makes the MS720-1K different from a simple load cell
The system is sold calibrated with its own portable readout and power accessories, so a buyer does not need to select and wire a separate strain-gauge indicator from scratch. That is useful for maintenance teams, test benches and temporary force measurements. The listed indicator model is not publicly named, however, so replacement indicators and service-menu calibration should be matched to the actual label supplied with the unit.
Tension and compression setup
For tension, connect the load cell through properly rated aligned eye bolts, rod ends or rigging adapters. For compression, use a fixture that keeps the S-beam axial and does not let it buckle, twist or carry machine-guiding loads. Side load is one of the most common reasons a force test becomes nonrepeatable even when the electronics are stable.
Peak Hold and RS-232
Peak Hold is useful for pull-off tests, winch force, maximum spring force, breakaway force and other tests where the highest value matters. RS-232 can support compatible data logging or printing when the exact indicator protocol and cable are known. For force-versus-time or force-versus-position curves, a dedicated acquisition system may be more useful than a single peak value.
Calibration and verification
MNM lists the MS720-1K as calibrated and ready to use. Before critical work, verify it with a known reference. If recalibration is necessary, establish a mechanically stable zero, apply a traceable known force, use the service procedure for the exact indicator supplied, then verify multiple points and return to zero. Because MNM does not name the indicator model on this listing, this guide does not invent an OP-901 or LP7515 button sequence.
Applications
Good candidates include cable and rope tension, winch line pull, hoist force measurement, pull testing, actuator force, clamp force, breakaway force, spring testing, hanging-scale conversions, custom test stands and general quality-control force comparison. Always distinguish measurement capacity from the safe working load of rigging and fixtures.
Troubleshooting
Peak readings vary: standardize fixture alignment, loading rate and starting position.
Zero shifts after unloading: inspect residual tension/compression, side load, cable pull and damaged hardware.
Indicator is unstable: check battery/power, connectors, cable routing, electrical noise and loose mechanical joints.
RS-232 does not communicate: verify protocol, baud/settings, wiring and the exact indicator model before changing calibration settings.
FAQ
Is the MS720-1K the same as the Comp-1K-0.1?
No. Both are 1,000 lb x 0.1 lb S-type systems, but the Comp-1K listing explicitly names LP7515 and AA/AC power, while the MS720-1K listing describes a rechargeable indicator without naming its model. Their best use cases can therefore differ.
Can I hang a 1,000 lb load directly from it?
The load cell has a 1,000 lb measurement capacity, but every eye bolt, shackle, hook, frame and anchor must have its own appropriate working-load rating and safety factor. A measurement specification is not a rigging certification.
Does it require wall power?
The listing includes rechargeable battery power and a power supply, supporting portable use as well as powered operation.
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