Overview
The MK503 is a cantilever beam load cell with a single fixed end and a loaded end that keeps its centre of gravity low for easy, interchangeable mounting. It provides a stable, repeatable output suited to routine industrial weighing.
Key Features
- High accuracy (≤0.05%F.S) for precise measurement
- Alloy steel elastic element for durability and corrosion resistance
- Sealed to IP68 for reliable operation in harsh environments
- Standard output 2.0 ± 0.2%mV/V, compatible with common indicators
- Compact design for straightforward integration
Applications
Used mainly in platform scales and material batching control systems.
| Technical Parameters | |||
|---|---|---|---|
| Rated capacity | 2.5kN / 250kg 5kN / 500kg 10kN / 1t 20kN / 2t 30kN / 3t 50kN / 5t | Comprehensive accuracy | ≤0.05%F.S |
| Temperature compensated range | -10°C~40°C | Output sensitivity | 2.0 ± 0.2%mV/V |
| Operating temperature range | -20°C~60°C | Nonlinearity | ±0.03%F.S |
| Temperature Effect on Output | <0.03%F.S/10°C | Hysteresis | ±0.03%F.S |
| Temperature Effect on Zero | <0.03%F.S/10°C | Repeatability | ±0.03%F.S |
| Input impedance | 385±15Ω | Creep (30min) | ±0.02%F.S/30min |
| Output impedance | 351±3Ω | Zero balance | ≤±0.1%F.S |
| Insulation resistance | ≥5000MΩ | Recommended excitation voltage | 10V(DC) |
| Material | Alloy steel | Safe overload | 120%F.S |
| Protection class | IP68 | Limit overload | – |
| Cable connection | Green: power+(E+), Black: power-(E-); White: signal+(S+), Red: signal-(S-) | ||
Dimension Drawing

Dimensions
| Model | Capacity (kN) | Capacity (t) | A | B | C | D | E | F | G | H | K | M | N | P | R |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MK503 | 2.5~10 | 0.25~1 | 133.4 | 76.2 | 25.4 | 16.4 | 30.7 | 30 | 57.9 | 17 | 4.8 | 12.7 | 22 | 15.9 | 28 |
| 20 | 2 | 136.7 | 16.7 | 36.8 | 36.6 | 23 | 9.5 | 33 | |||||||
| 30 | 3 | 139.7 | 79.2 | 39 | 15 | 34.5 | |||||||||
| 50 | 5 | 171.5 | 95.2 | 38.1 | 42.9 | 43 | 73.8 | 29.4 | 11 | 19 | 34.9 | 22.2 | 40 |
Frequently Asked Questions
What are the typical applications of the MK503?
Used mainly in platform scales and material batching control systems.
Which indicator, transmitter or system works with the MK503?
It outputs a standard mV/V strain signal, so it connects to most weighing indicators and transmitters — including those in our Sensor Accessories range.