MNM MS-1-2K 2,000 lb S-Type Load Cell Guide: 3 mV/V, Wiring & Specs
- pete8781
- Jul 29
- 3 min read
For product selection, replacement help or indicator matching, call MNM Scales at (832) 290-3120 or email mnmscales@yahoo.com.
The MNM MS-1-2K 2,000 lb S-type load cell is a bare alloy-steel tension/compression transducer for crane-scale repairs, force-test fixtures, suspended weighing systems and OEM machinery where a 2,000 lb force range and standard strain-gauge output are appropriate. Unlike a complete scale package, the MS-1-2K is the sensing element itself, so buyers need to match the mechanical connection, electrical signal and indicator configuration to the application.
MS-1-2K Published Electrical and Performance Specs
MNM publishes the MS-1-2K at 2,000 lb capacity with rated output of 3.00 ± 0.01 mV/V. Nonlinearity is listed at ±0.02% full scale, hysteresis at ±0.02% FS, repeatability at ±0.01% FS and 30-minute creep at ±0.02% FS. Zero balance is ±1.00% FS. Input resistance is 385 ± 15 Ω and output resistance is 350 ± 5 Ω, with insulation resistance of at least 5000 MΩ.
The published excitation voltage is 10 V DC/AC. Temperature compensation is specified from -10°C to 50°C, while the operating temperature range is -20°C to 60°C. MNM lists a 120% full-scale safe-overload figure and a 20 ft cable. The four-wire color code is red = excitation/input positive, black = excitation/input negative, green = signal/output positive and white = signal/output negative.
How the S-Beam Measures Tension and Compression
An S-beam load cell contains bonded strain gauges arranged as a Wheatstone bridge. When axial force deforms the spring element, the bridge output changes by a few millivolts per volt of excitation. A compatible indicator or signal conditioner supplies excitation, reads the differential signal and converts it into pounds, kilograms or engineering-force units after calibration. Because the sensor works in both tension and compression, the same basic transducer can serve hanging, pull-force and push-force applications when the fixture is designed correctly.
Installation Checks Before You Connect an Indicator
Match capacity, thread size, installed height, loading direction and available clearance before treating any S-beam as a direct replacement. Keep the primary force centered through the sensor axis and avoid side load, torsion and bending. Verify that the indicator accepts a roughly 3 mV/V strain-gauge signal and can excite a 350 Ω-class bridge. If the reading moves in the opposite direction expected, correct signal polarity or indicator configuration instead of swapping excitation wires randomly.
Common Uses for a 2,000 lb S-Type Load Cell
Typical uses include suspended hoppers, hanging scales, mechanical-to-electronic scale conversions, cable or chain tension fixtures, actuator and clamp testing, small hoist-force measurement, manufacturing QC fixtures and custom test stands. S-type load cells are widely used in these roles because they can sit directly in the load path and measure both pull and push forces.
Frequently Asked Questions
What indicator works with the MS-1-2K?
Use an indicator designed for strain-gauge load cells that can supply suitable excitation and read a roughly 3 mV/V, 350 Ω-class bridge. Capacity and division settings must then be calibrated to the application.
Can the MS-1-2K measure compression as well as tension?
Yes. The S-type geometry is intended for tension and compression, provided the fixture loads the sensor axially and the attachments are appropriate for the direction of force.
Does 120% safe overload mean I should test to 2,400 lb?
No. Treat 2,000 lb as the rated measuring capacity. Safe overload is a sensor-protection specification, not an expanded working range.
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