Digital Gauge Frequently Asked Questions

The accuracy of our gauge sensor is defined at a temperature of 20 °C.

The accuracy at temperatures other than 20°C can be improved by resetting the counter when the temperature stabilizes, allowing us to only consider the changes caused by the temperature of the glass scale used in the detection part.

Our detection glass scale has a linear expansion coefficient of 9× 10 ⁻⁶ /K.
At a certain temperature (A℃), using 20 ℃ as the reference temperature, for a sensor with a 100 mm stroke, the error at full stroke will be 9 × 10 ⁻⁶ × 100 (mm) × (A − 20) mm, which adds to the accuracy at 20 ℃.
The additional error will be 1/2 of the above when a 50 mm stroke is applied, and 3/10 of the above when a 30 mm stroke is applied. This is an error that depends on the stroke amount, regardless of resolution.

Furthermore, the change in the zero point due to temperature variations cannot be quantitatively demonstrated because it is influenced by the variations in the glass (which depend on the position of the detection part relative to the total length of the glass), the variations in the spindle, and the variations in the fixture holding the sensor, all of which interact with each other.