Measuring the thickness of noodle dough
Measuring the thickness of noodle dough to ensure it remains within a certain range
You wish to measure the thickness of noodle dough in units of 0.1 mm 0.004 in and stabilize the product within a range of ±0.5 mm.
[Issue] Variability in noodle thickness caused by differences in ingredients and workers
- The thickness of noodles varies due to factors such as differences in ingredients, even if they are produced in the same process using the same proportions.
(You wish to measure thickness since changes in thickness cause the product’s texture to vary.) - Although you’ve been managing noodle thickness by means of sampling inspections based on workers’ rules of thumb, variations caused by workers and reliance on sampling measurements have resulted in unstable thickness.
[Solution] Install Micro Laser Distance Sensors above and below the noodles and use them to measure thickness.
Install two HG-C Series Micro Laser Distance Sensors above and below the noodle dough, as if to sandwich the dough between the sensors, and then measure and display the thickness in real time.
If the measurement is more than 15 μm 0.591 mil greater than the thickness of one cap (30 μm) (resulting in a measured value of 45 μm or greater), determine that two caps are overlapping.

* If there is no workpiece between the sensors, avoid interference light by stopping the light emitting.
Analog output
By outputting analog values from the HG-C sensors to upstream equipment like a PLC, and controlling the gap between rollers in the previous process (feedback control) based on the noodle thickness, you can maintain uniform noodle thickness!
Key considerations in choosing a sensor

Contactless testing
This setup is capable of contactless testing! It can accommodate measurements of products that are easily scratched.
High-precision measurement
This setup is capable of high-precision measurement with repeatability of 10 μm (when using the HG-C1030)!
Feedback control
Analog output! The sensors support feedback control!
Easy installation
The sensors feature a compact design with a built-in amplifier! Installation is simple.
Lightweight, rugged design
Thanks to their aluminum die-cast enclosure, these sensors are lightweight and rugged! The design reduces elements of instability in measurement precision caused by enclosure deflection and temperature.
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