Novatech F328 Low Force Universal Loadcell

Low force loadcell
Totally passive design
Foil strain gauges
Wheatstone bridge device

F328 Low Force Universal Loadcell

The F328 is an axial low force universal loadcell with quantified extraneous load and moment rejection.

Its high resistance 5000Ω strain gauge bridge makes this loadcell ideal for battery powered applications such as a laptop computer with a DSC USB loadcell digitiser or a hand held TR150 loadmeter.

The strain system exploits a laminated structure producing excellent extraneous force and moment rejection together with minimal translational deflection. Novatech have quantified the errors present with combinations of side load and associated induced moments in Engineering Application Sheet E034.

We are happy to design variants of this loadcell to meet your specific requirements. 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.
F328DF00B0	Compression, unrationalised	F328DF00BN	Compression, rationalised
F328TF00B0	Tension, unrationalised	F328TF00BN	Tension, rationalised
F328UF00B0	Bi-directional, unrationalised	F328UF00BN	Bi-directional, rationalised

**F328 Specification**
Parameter	Value	Unit
Non-linearity - Terminal	±0.15	% RL
Hysteresis	±0.15	% RL
Creep - 20 minutes	±0.05	% AL
Repeatability	±0.02	% RL
Rated output - Nominal	1.2	mV/V
Rated output - Rationalised	1.0	mV/V
Rationalisation tolerance	±0.5	% RL
Zero load output	±10	% RL
Temperature effect on rated output per °C	±0.005	% AL
Temperature effect on zero load output per °C	±0.01	% 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	5000	Ω
Insulation resistance - Minimum at 50Vdc	500	MΩ
Overload - Safe	50	% RL
Overload - Ultimate	100	% RL
Weight - Nominal (excluding cable)	9 to 29	g

The ranges up to 50N are manufactured in aluminium; ranges above 50N are manufactured in stainless steel.

**Structural stiffness - Nominal**
Range (N)	Stiffness (N/m)	Range (N)	Stiffness (N/m)
10	5.3 x 10⁵	100	2.2 x 10⁶
20	1.0 x 10⁶	200	4.3 x 10⁶
50	2.6 x 10⁶	500	1.1 x 10⁷

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 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.

This loadcell has compensation components 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.
PDF data-sheet	Printable data-sheet. Right click on the link to download the file if you are using Internet Explorer.

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