Our sensors are of the film type and can be bent for use.

However, noise may occur depending on the degree of curvature, so testing is required to confirm applicability.

Please check the related video at the link below.

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This phenomenon is due to the viscoelastic properties of the material composing the sensor, 

causing the output value to change over time under the same pressure.

Because of this characteristic, we recommend performing measurements within a short period (up to 5 minutes) for more precise results.

For more detailed information, please refer to the following content.

<Example of Output Change When Drift Occurs>

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Kitronyx’s Film-type sensors are FSR (Force Sensing Resistor) sensors.

When pressure is applied to the sensor, the conductive particles come closer together, reducing the resistance.

The principle involves converting the resistance change in the sensor into a digital signal via a controller, which outputs ADC values in the software.

Additionally, FSR sensors are classified into shunt mode and thru mode based on the pattern.

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After connecting the sensor to be inspected with the controller and PC, 

select the accumulation mode in the real-time analysis window.

By pressing the sensor in an X-shape as shown in the image below, 

you can check for any defects by verifying if the output is consistent in the same direction and if there are no missing parts.

<Note> How to set the accumulated mode of the real-time analysis window

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If you need large-area measurements, 

you can connect up to 8 sensors and measure simultaneously.

For more detailed information, please refer to the video below.

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Hello, this is Kitronyx.

In conclusion, yes, you can use the sensor in such environments. 

However, please note that applying excessive force to the sensor may cause damage.

Here are the results from our actual experiments: 

When calibration was performed at 15, 25 kgf, the error rates were checked at applied forces of 10 kgf, 20 kgf, and 35 kgf. 

The results were as follows:

•10 kgf: approximately 15 ~ 20%

•20 kgf: approximately 3 ~ 5%

•35 kgf: approximately 10 ~ 12%

When calibration is performed to match the usage environment, the error rate shows excellent performance, up to a maximum of 5%.

Even in environments outside the calibration range, although the error increases, 

the relative pressure measurement still operates normally.

Therefore, while there is no problem using the sensor in environments outside the calibration range, 

performing calibration to match the usage environment will reduce errors.

Error rate: |Applied force - measurement result| / Applied force x 100(%)

※ Results may vary depending on the experimental environment.

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Hello, this is Kitronyx.

 Due to the complexity and non-linear characteristics of the electronic pressure sensor, 

it is difficult to define a uniform pressure resolution.

As shown in the figure below, the non-linear characteristics generally exhibit higher pressure

※ Please note that the graph is for reference only to understand the pressure resolution. 

The pressure range and resolution may vary depending on the sensor.

You can see in the video that the measured value changes as the applied weight increases.

Let's check the pressure resolution based on the video.

 The area of the weight plate is about 15 cm².

You can see the measured value change as the weight increases by 1 kgf

Therefore, based on the video, we can say that the pressure resolution is at least 0.067 kgf/cm²!

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Hello, this is Kitronyx.

The proper way to use the device is to perform calibration according to the usage environment before using it. 

Based on our internal experimental experience, we can explain it in two scenarios.

※ Results may vary depending on the experimental environment.

1. Performing calibration at high pressure and using it at low pressure

More than half of the samples showed improved node deviation, 

while the remaining samples showed worsened node deviation.

2. Performing calibration at low pressure and using it at high pressure

About 10% of the samples showed improved node deviation, 

while the remaining samples showed worsened node deviation.

These results are due to the non-linear characteristics of the sensor. 

We recommend performing calibration according to the usage environment before using it.

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Spatial resolution is a criterion for how detailed the spatial resolution of a sensor can be expressed in the spatial domain.

The spatial resolution is based on the Pitch between nodes of the sensor. 

The figure below is an example.

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