Description
MB 102 Series – Miniature Load Measuring Pin
Product Description
Magtrol Miniature Load Measuring Pins are used to measure load and force and provide overload protection. The pins are mounted into machines in place of normal shafts and fitted with strain gauges, allowing them to produce a signal proportional to the measured load. Manufactured in Switzerland, Magtrol’s MB 102 Series Miniature Load Pins are rugged with high resistance stainless steel and tight construction.
Features
- Overload detection and load measurement: up to 12 kN (10 kN standard)
- Admissible overload: 150 % of the nominal load
- High overload capacity
- Standard diameter available from ø10 mm
- Small size for compact applications
- Strain gauges full bridge technology
- High reliability for strict safety requirements
- Special high strength steel
- Protection class IP 50 (IP 66 optional)
- Can be designed with special dimensions for adaptation to various construction conditions.
Specifications
| LOAD MEASURING | |
| Nominal Load (NL) | 10 kN c) |
| Overload Admissible (% of NL) | 150 % |
| Overload at Rupture (% of NL) a) | 300 % a) |
| Non-linearity Error b) | ≤ 1 % |
| Zero Adjustment b) | ± 1 % |
| MECHANICAL CHARACTERISTICS | |
| Operating Principal | Full-bridge strain gauge |
| Material | Special high strength Stainless Steel |
| Lubrication | Not availab |
| ENVIRONMENT | |
| Compensated Temperature Range | +20 °C … +60 °C |
| Operating Temperature Range | -10 °C … +80 °C |
| ELECTRICAL CHARACTERISTICS | |
| Nominal Sensitivity | 2 mV / V ±3 % |
| Strain Gauge Bridge Impedance: Input | 450 Ω |
| Strain Gauge Bridge Impedance: Output | 350 Ω |
| Power Supply | 5 … 10 V DC |
| Protection Class | IP 50 (IP 66 without connector) |
| ELECTRICAL CONNECTION | |
| Connection Ouput | Integrated PTFE K 422 cable; lenght 1.5 m d); with connector LEMO FGG.1B.304.CLAD42 e) |
a) This value is only reached if the load cell is correctly positioned (see «Safety Instruction»). If the force is applied in a direction other than the one defined, the load cell may break (mechanical destruction) below the nominal overload value at rupture.
b) Of Full scale.
c) Other nominal load and customised load are available on request.
d) Other cable lengths available on request.
e) Load pins are also available without connector (pigtail wires).
Operating Principles
When force is applied to the Load Measuring Pin along its sensitive axis, the effect on the strain gauge bridge results in an output signal proportional to the applied force. The powering of the strain gauge bridge, as well as the amplification of its output signal voltage, is performed by an external amplifier.
Depending on the execution, the latter allows the monitoring of several levels.
Ra should equal Rb so that the force is evenly distributed
Applications
The compact design as well as the high protection class give this sensor an excellent aptitude for the measurement and monitoring of forces and overloads on mechanical compact applications, as well as in harsh environments.
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