Reference feature
State whether the job is edge, centre or line guidance and identify the physical feature that the sensor must resolve.[2]
Resources / Ultrasonic vs Photoelectric Sensors
Ultrasonic vs Photoelectric Web Guide Sensors
Sensor selection should begin with the actual material, guiding target and installation geometry. Rather than treating either sensing method as universal, compare what the sensor must detect, the available mounting position and the evidence from an on-machine trial.
Web-guide sensor selection
Compare the sensing task before selecting the sensor
Use the material, target, mounting geometry and trial evidence to make a reviewable sensor decision.
1. Define the sensing task first
A web-guide sensor supplies position information to a controller so that the guide can correct lateral position. Define whether the required reference is an edge, centreline, printed line or another approved feature before choosing the sensing method.[2]
- Record the material construction, transparency or opacity, surface condition, web width, target edge or mark, and the operating condition to be tested.
- Measure the available sensor location, bracket geometry, clearance through the sensing area, web-running direction and cable path.
- Confirm the controller input, signal range, permitted configuration changes and the acceptance observation before ordering hardware.
2. What the ultrasonic sensor documentation supports
The FMS US01B/US04B ultrasonic sensor manual describes a transmitter-and-receiver sensor for web guiding. For those models, the manufacturer states that transparent films can be detected, while sound-permeable materials such as net-like or open-weave textiles are not suitable.[1]
That product manual also defines an 8 mm detection range and requires the web edge to be aligned through the sensor axis and the detection area. Those dimensions and alignment instructions are model-specific; verify them against the selected product and the real mounting geometry.[1]
Use ultrasonic sensing as a candidate when the intended material and the sensor's documented operating conditions match. A material sample and the actual path are still required to confirm the installed result.
3. Review photoelectric sensing against the actual reference
The documented BKS015 guide system can use optical sensors as well as ultrasonic sensors, and uses sensor position feedback for edge or centre applications. The controller, guide frame and sensor arrangement must therefore be reviewed as one installed loop.[2]
For a photoelectric option, identify the feature the sensor will use and test it with the intended material, printed condition, illumination, mounting distance and operating speed. Do not promote a catalogue description into a compatibility guarantee for a different sensor model or process.
Mechanical fit
Check bracket position, sensor orientation, web path and clearance before relying on a selected sensor family.
Signal integration
Confirm the input, wiring and configuration rules from the controller and sensor documentation for the specific installation.[2]
4. Make the decision with a controlled trial
A trial should compare the approved sensor candidates under the same material, web path and operating condition. Record the sensor position, reference feature, line speed, controller configuration and the observed result so that the decision can be reviewed later.
- Confirm that the web enters the sensing area as intended and that the reference remains within the documented detection range for the selected device.[1]
- Test the normal production condition and any agreed material or operating changes without exceeding the supplier's specified limits.[1]
- Document the final mounting position, sensor model, settings, controller interface and acceptance evidence before releasing the change.
Sources & References
- FMS Force Measuring Systems AG. Installation Manual US01B.M8 / US04B.M8 Back
- FMS Technology. Operating Manual BKS015 Back
FAQ
Which web-guide sensor works with transparent film?
The cited ultrasonic-sensor manual states that its US01B/US04B models can detect transparent films, subject to the model's installation and operating conditions. Confirm the actual material and mounting arrangement with a trial before selection.
Is a photoelectric sensor always suitable for a printed line?
No universal conclusion should be made from the sensor category alone. Identify the feature to be detected and verify it on the actual material, printed condition, mounting geometry and selected product documentation.
Can one web-guide controller use ultrasonic and photoelectric sensors?
The cited BKS015 documentation lists both optical and ultrasonic sensors for that system. Compatibility, wiring and configuration must be confirmed for the exact controller and sensor models in the installation.
What should be recorded during a sensor trial?
Record the material, target feature, web path, sensor position, speed, controller configuration, observed result and the acceptance criteria. This keeps the selection decision reviewable and repeatable.
Request a web-guide sensor review
Send the material details, web width, target edge or mark, speed range, web-path drawing, sensor mounting photos, controller model and the operating condition to be tested. KRD can help scope an ultrasonic or photoelectric sensor trial.