• Good repeatability
  • Compact axial geometry
  • Space saving male / female fixing
  • Sealed to IP65
  • Traceable calibration with certificate included in the standard price
  • Standard 2 year warranty

F308 Axial Loadcell

The F308 is a compact axial loadcell with improved EFI compared to diaphragm loadcells. The inert base and top fixings with spanner flats allow ease of installation. The strain geometry possesses a plane with good EFI performance defined as perpendicular to the loading axis and the spanner flats. This is particularly useful when a loadcell is used to support mass with its weight acting perpendicular to the measurement axis.

We are happy to design variants of this loadcell to meet your specific requirements. Versions can be manufactured for higher temperature operation. Ranges from 500N to 2.5kN can be manufactured for fully compensated operation up to +250°C. Please consult our engineering department.

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

Note: EFI = Extraneous Force Immunity, see Engineering Application Sheet E008 for details.

Ordering Codes

See the loadcell ordering code sheet for more details. Add range in the required force units.
F308DFR0H0 Compression, IP65, unrationalised F308DFR0HN Compression, IP65, rationalised
F308TFR0H0 Tension, IP65, unrationalised F308TFR0HN Tension, IP65, rationalised
F308UFR0H0 Bi-directional, IP65, unrationalised F308UFR0HN Bi-directional, IP65, rationalised

F308 Specification

Parameter 50 to 500N 1 to 2.5kN Unit
Non-linearity - Terminal ±0.1 ±0.35 % RL
Hysteresis ±0.1 ±0.1 % RL
Creep - 20 minutes ±0.2 ±0.1 % AL
Repeatability ±0.05 ±0.05 % RL
Rated output - Nominal 1.2 1.2 mV/V
Rated output - Rationalised 1.0 1.0 mV/V
Rationalisation tolerance (applies to single direction calibrations) ±0.5 ±0.5 % RL
Zero load output ±4 ±4 % RL
Output symmetry 2.0 2.0 % AO
Temperature effect on rated output per °C ±0.005 ±0.005 % AL
Temperature effect on zero load output per °C ±0.01 ±0.01 % RL
Temperature range - Compensated -10 to +50 -10 to +50 °C
Temperature range - Safe -10 to +80 -10 to +80 °C
Excitation voltage - Recommended 10 10 V
Excitation voltage - Maximum 10 10 V
Bridge resistance 350 350 Ω
Insulation resistance - Minimum at 50Vdc 500 500
Overload - Safe 50 50 % RL
Overload - Ultimate 200 200 % RL
Sealing IP65 IP65  
Weight - Nominal (excluding cable) 50 70 g

Ranges up to 200N are manufactured in aluminium; ranges above 200N are manufactured in stainless steel.

Structural stiffness - Nominal

Range (N) Stiffness (N/m) Range (N) Stiffness (N/m) Range (kgf) Stiffness (N/m)
50 1.4 x 106 100 3.8 x 106 200 1.1 x 107
500 2.5 x 107 200 1.1 x 107 1 to 2.5 1.1 x 108

Notes

  1. AL = Applied load.
  2. RL = Rated load.
  3. Temperature coefficients apply over the compensated range.
  4. The load must be applied directly through the central loading axis.

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.

The screen is not connected to the loadcell body.

Notes

  1. AL = Applied load.
  2. RL = Rated load.
  3. AO = Average of tension and compression outputs for full load.
  4. Temperature coefficients apply over the compensated range.

Connections

The loadcell is fitted with 2 metres of PVC insulated 4 core screened cable type 7-1-4C.

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.

When this loadcell is rationalised the resistors are housed in a capsule located in the loadcell cable 100mm from the free end. Capsule dimensions are Ø10mm by 57mm.

Additional Information

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

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