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  5. ALF250 Miniature Force Sensor

ALF250 Miniature Force Sensor

Miniature diaphragm loadcell


Key features

  • Miniature diaphragm loadcell
  • Measurement ranges: 100N, 200N, 400N, 800N
  • Tension, compression & bi-directional calibration
  • Non-lin./hysteresis: 0.5/0.5% RL
  • Dimensions (mm): Ø15 x 8
  • Easy installation
  • Hardened stainless steel body

About the ALF250 Miniature Force Sensor

The ALF250 is ideally suited to force measurements in confined spaces in both tension and compression for control of critical parameters in all kinds of industrial processes. Their versatility is such that they are also applied in a great number of important fields of scientific and engineering test work, mobile as well as workshop, static and dynamic.

We are happy to design variants of this loadcell to meet your specific requirements. Please consult our engineering department.

Geometry: Very small loadbutton cell for force measurement in confined spaces. Used in compression and/or tension on a wide range of OEM or end-user applications.

With bi-directional versions there is a small difference between the output signal for compression and tension. All standard bi-directional loadcells are calibrated in both modes and the output for each direction is stated on the test / calibration certificate.

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Not exactly what you’re looking for? We offer standard sensors but can also help you with a tailor-made sensor or a complete measuring solution. Please contact us for advice or budgetary pricing.

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Technical Specifications

Specification Value
Bridge resistance 350 Ω
Creep - 20 minutes ±0.1, % AL
Excitation voltage - maximum 10V
Excitation voltage - recommended 5, V
Hysteresis ±0.5, % RL
Insulation resistance - minimum at 50vdc 500 MΩ
Load direction Tension, compression, bi-directional
Measurement ranges 100N, 200N, 400N, 800N
Non-linearity - terminal ±0.5, % RL
Overload - safe 50 % RL
Overload - ultimate 100 % RL
Rated output - nominal 1.6, mV/V
Rated output - rationalised 1.0, mV/V
Rationalisation tolerance ±0.5, % RL
Repeatability ±0.1, % RL
Sealing IP65
Temperature effect on rated output per ºc ±0.005, % AL
Temperature effect on zero load output per ºc ±0.03, % RL
Temperature range - compensated -10 to +50, ºC
Temperature range - safe -10 to +80, ºC
Weight - nominal (excluding cable) 8 to 12g
Zero load output ±4, % RL

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Need something else?

ALF251 Miniature Force Sensor

  • Measurement range: up to 3.2 kN
  • Ideal for applications in confined spaces
  • IP65 protection rating
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ALF255 Miniature Force Sensor

  • Measurement ranges: up to 6.4 kN
  • Versions operating up to +250°C possible
  • ø30mm x 25mm body
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ALF259 Miniature Diaphragm Force Sensor

  • Measuring ranges: 250 N, 500 N or 1 kN
  • Non-lin./hysteresis: 0.5/0.5% RL
  • Ø12.7mm x 9mm body
Datasheet View product