• High accuracy
  • Misalignment error compensation
  • Highly adaptable inert end fixings
  • Standard 2 year warranty
  • Output rationalised to 2mV/V
  • Traceable calibration with certificate included in the standard price

F257 Axial Compensated Loadcell

Geometry: Beam and diaphragm combination. Tension, compression and bi-directional options are available. All standard bi-directional loadcells are calibrated in both modes.

The loadcell's unique strain system compensates for typical force misalignment in force measurement rigs and industrial weighing systems. Its various end fixing options are all inert and easily modified for direct inclusion in mechanical assemblies.

The basic versions of the F257 are all sealed to IP65. If better sealing is required IP67 is available as an option. Integral 4 to 20mA or ±10V output amplifiers can be fitted as an option. Additional information can be found in Engineering Application Sheet E032 and the ICA6H data-sheet.

We are happy to design variants of this loadcell to meet your specific requirements. Versions can be manufactured for operation up to +250°C. Please consult our engineering department.

Details of our other loadcell families can be found in the Product Guide.

Ordering Codes

See the loadcell ordering code sheet for more details. Add range in the required force units.
F257CFR0KN Compression, flat base, IP65 F257DFR0KN Compression, stud base, IP65
F257LFR0KN Compression, convex base, IP65 F257UFR0KN Bi-directional, stud base, IP65
F257TFR0KN Tension, stud base, IP65    
All F257s are rationalised as standard. Change R to an S for IP67. Integral amplifiers are available with all options.

F257 Specification

Parameter Value Unit
Non-linearity - Terminal ±0.1 % RL
Hysteresis ±0.1 % RL
Creep - 20 minutes ±0.05 % AL
Repeatability ±0.02 % RL
Rated output - Rationalised (applies to single direction calibrations) 2.0 mV/V
Rationalisation tolerance ±0.1 % RL
Zero load output ±4 % RL
Temperature effect on rated output per °C ±0.002 % AL
Temperature effect on zero load output per °C ±0.005 % RL
Temperature range - Compensated -10 to +50 °C
Temperature range - Safe -10 to +80 °C
Excitation voltage - Recommended 10 V
Excitation voltage - Maximum 20 V
Bridge resistance 700 Ω
Insulation resistance - Minimum at 50Vdc 500
Inclined load error - concentric at 3° ±0.25 % RL
Overload - Safe 50 % RL
Overload - Ultimate 100 % RL
Sealing - R option IP65  
Sealing - S option IP67  
Weight - Nominal (excluding cable) 5.5 to 6.5 kg

All standard ranges are manufactured in stainless steel.

Structural stiffness - Nominal

Range (kN) Stiffness (N/m) Range (kN) Stiffness (N/m) Range (kN) Stiffness (N/m)
80 8.0 x 108 160 1.6 x 109    
120 1.2 x 109 240 2.4 x 109    

Notes

  1. AL = Applied load.
  2. RL = Rated load.
  3. Temperature coefficients apply over the compensated range.

Connections

The loadcell is fitted with 2 metres of PVC insulated 4 core screened cable type 16-2-4C.

Excitation + = Red, Excitation - = Blue, Signal + = Yellow, Signal - = Green, Screen = Orange.

Reverse the signal connections to obtain a positive signal in tension mode. The screen is not connected to the loadcell body.

Additional Information

Outline Outline drawing of the product.
STEP file STEP files for standard ranges.
Fittings Drawing of F257 fittings.
Stock List Loadcell availability.
PDF data-sheet Printable data-sheet. Right click on the link to download the file.

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