Novatech F259 Miniature Diaphragm Loadcell

Tension / compression / bi-directional calibration
Easy installation
12.7mm diameter
Hardened stainless steel body
Standard 2 year warranty

F259 Miniature Diaphragm Loadcell

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.

The F259 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.

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.
F259CFR0H0	Compression, IP65, unrationalised	F259CFR0HN	Compression, IP65, rationalised
F259TFR0H0	Tension, IP65, unrationalised	F259TFR0HN	Tension, IP65, rationalised
F259UFR0H0	Bi-directional, IP65, unrationalised	F259UFR0HN	Bi-directional, IP65, rationalised
Change the C to a D for compression with thread fitting.

**F259 Specification**
Parameter	Value	Unit
Non-linearity - Terminal	±0.5	% RL
Hysteresis	±0.5	% RL
Creep - 20 minutes	±0.2	% AL
Repeatability	±0.1	% RL
Rated output - Nominal	1.6	mV/V
Rated output - Rationalised	1.0	mV/V
Rationalisation tolerance	±0.5	% RL
Zero load output	±4	% RL
Temperature effect on rated output per °C	±0.005	% AL
Temperature effect on zero load output per °C	±0.03	% RL
Temperature range - Compensated	-10 to +50	°C
Temperature range - Safe	-10 to +80	°C
Excitation voltage - Recommended	5	V
Excitation voltage - Maximum	10	V
Bridge resistance	350	Ω
Insulation resistance - Minimum at 50Vdc	500	MΩ
Overload - Safe	50	% RL
Overload - Ultimate	100	% RL
Sealing	IP65
Weight - Nominal (excluding cable)	6 to 7.5	g

All standard ranges are manufactured in stainless steel.

**Structural stiffness - Nominal**
Range (N)	Stiffness (N/m)	Range (N)	Stiffness (N/m)	Range (N)	Stiffness (N/m)
250	1.3 x 10⁷	500	2.6 x 10⁷	1000	4.7 x 10⁷

**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 axis.

Notes

AL = Applied load.
RL = Rated load.
Temperature coefficients apply over the compensated range.
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 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.
Stock List	Loadcells normally available for despatch within 24 hours.
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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