Novatech F257 Axial Compensated Loadcell

High accuracy
Misalignment error compensation
Highly adaptable inert end fixings
Standard 2 year warranty
Output rationalised to 2mV/V

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. An SY014 integral 4 to 20mA output amplifier can be fitted as an option.

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 Loadcell Specifier 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	F257EFR0KN	Tension, eye 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	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	MΩ
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

AL = Applied load.
RL = Rated load.
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.
Fittings	Drawing of F257 fittings.
PDF data-sheet	Printable data-sheet. Right click on the link to download the file.

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