MNM Scales 4,000 lb NTEP Stainless Steel Shear Beam Load Cell Guide: 3 mV/V & Full Specs
- pete8781
- Jul 29
- 3 min read
Need more details, replacement help or scale-integration support? Call MNM Scales at (832) 290-3120 or email mnmscales@yahoo.com.
The MNM Scales 4,000 lb NTEP stainless steel shear beam load cell is a single-ended beam sensor supplied with a foot and spacer for low-profile platform, floor, hopper and tank weighing systems. MNM describes the 4,000 lb cell as stainless steel, moisture sealed, NTEP and Legal for Trade, with 3.00 ± 0.015 mV/V rated output and the common 350-ohm output bridge used by many industrial weighing indicators. Its foot-and-spacer configuration and extensive published interchange list make it especially attractive for scale repair, platform rebuilding and OEM weighing projects where a single-ended shear beam is the correct mechanical geometry.
Why Single-Ended Shear Beams Are Used in Platform Scales
A single-ended shear beam is rigidly mounted at one end while force is introduced near the opposite end through a loading foot or mount. The internal strain-gauge section measures shear deformation while the load cell supports the platform mechanically. This geometry is widely used in low-profile floor scales, platform scales, hopper and tank systems because multiple cells can be mounted at the corners or supports of a structure while keeping overall scale height relatively low.
Full MNM 4,000 lb Technical Specifications
Rated output is 3.00 ± 0.015 mV/V. Nonlinearity is ±0.02% full scale, hysteresis ±0.02% full scale and repeatability ±0.01% full scale. Thirty-minute creep is ±0.02% full scale, with zero balance ±1.00% full scale. Temperature effect on zero and output are each listed at ±0.02% full scale per 10°C. These specifications support precise weighing across platform and process applications when the load cell is mounted and calibrated correctly.
Input resistance is 385 ± 5 ohms and output resistance is 350 ± 3 ohms, with insulation resistance at least 5,000 megohms. Excitation is specified at 10 V DC/AC. The compensated temperature range is -10°C to 50°C and operating range -20°C to 60°C. Safe overload is listed at 120% full scale. MNM lists the cable as “5.4 × 6 m” and provides the standard four-wire code: Red +Input/Excitation, Black -Input/Excitation, Green +Output/Signal and White -Output/Signal.
Stainless Steel, Moisture Sealing and Outdoor/Industrial Use
Stainless construction and moisture sealing are valuable in warehouses, food-related dry areas, agricultural facilities and other environments where carbon-steel sensors can corrode. Moisture sealed does not mean that connectors, junction boxes or the entire scale can be submerged or pressure washed without an appropriate environmental design. In a floor scale, water often enters through cable glands, damaged cable jackets or junction boxes long before the load-cell body itself becomes the weak point.
Published Interchange Families
MNM lists Artech SS30310, Celtron SQB SS, HBM B35, Revere 9123, Rice Lake RL35023S, Rice Lake RL39123, Sensortronics 65023SS and Coti Global CG-23SS as interchangeable product families. That is valuable for service work because floor scales and tank systems often remain mechanically sound long after one sensor fails. A replacement should preserve capacity, mechanical mounting, output class and wiring, followed by corner adjustment and full calibration of the completed scale.
Applications: Detailed Guides
Replacement and interchange guide — covers the eight MNM-listed replacement families, electrical checks, foot/spacer installation, corner balancing and recalibration.
Floor, platform, hopper and tank scale applications — explains four-cell platform layouts, load distribution, junction-box trimming, vessel weighing and Legal-for-Trade considerations.
The Foot and Spacer Matter
The supplied foot and spacer form part of the mechanical load introduction. On a platform scale, the foot contacts the floor while the load-cell body is bolted to the scale frame. This allows the platform to move microscopically under load without forcing the sensor into an incorrect bending condition. Keep the foot free to seat properly, ensure all feet contact the floor, and level the scale before corner calibration. A seized, bent or mismatched foot can produce corner errors even when the electrical load cell is healthy.
NTEP and Commercial Scale Repair
For a scale used to sell goods or charge by weight, NTEP status is important. The load cell is an approved component, but a commercial scale also depends on the indicator, platform design, division size, calibration and local inspection requirements. After replacing a cell in a Legal-for-Trade floor or platform scale, the technician should perform corner tests, span calibration and any sealing or inspection steps required before returning the scale to commercial service.
Frequently Asked Questions
Is this load cell stainless steel?
Yes. MNM lists stainless-steel construction and moisture sealing.
What is the rated output?
3.00 ± 0.015 mV/V.
Is it NTEP / Legal for Trade?
MNM lists the 4,000 lb load cell as NTEP and Legal for Trade. The finished scale must also meet applicable commercial-weighing requirements.
What is the wire color code?
Red +Excitation, Black -Excitation, Green +Signal and White -Signal.
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