Optical grating displacement sensor (RS485/Modbus)
✨Features
Product Introduction
The 25 Series Grating Displacement Sensor is a high-performance contact linear gauge designed for automated precision measurement. Utilizing an Absolute Grating System, it eliminates tracking errors and ensures data integrity even during rapid movements.
This sensor is engineered for easy integration into industrial IoT (IIoT) systems, featuring a Modbus RTU interface (RS485) that allows for direct digital communication with PLCs and computers. With a robust IP65 protection rating and a carbide contact point, the AM-25 series is built to withstand demanding manufacturing environments while delivering consistent accuracy ranging from 5μm down to 1.5μm.
Size and Structure
| Parameter | Specification |
|---|---|
| Series Models | B25: 5μm Res / 5μm Acc |
| Q25: 1μm Res / 3μm Acc | |
| S25: 0.5μm Res / 2μm Acc | |
| GS25: 0.2μm Res / 1.5μm Acc | |
| Measurement Range | 25.4 mm |
| Sensor Type | Grating (Absolute Type, No Tracking Error) |
| Response Time | 50 ms |
| Measuring Force | 1.6 - 1.8 N |
| Communication Protocol | Modbus RTU |
| Signal Output | RS232 Level Signal |
| Supply Voltage | 5 VDC |
| Working Current | < 50 mA |
| IP Rating | IP65 |
| Operating Environment | -10 to +50℃ (No freezing); 35-85% RH |
| Materials | Body: Aluminum Alloy |
| Boot: Fluoro Rubber | |
| Probe: Cemented Carbide | |
| Weight | Approx. 91.5g |
| Connection | M8 Connector (Cable sold separately) |
FAQ
Q：What is the main difference between the four models (B25, Q25, S25, GS25)?
A：The models differ in resolution and accuracy. The AM-B25 is the standard model (5μm resolution), while the AM-GS25 is the ultra-precision model (0.2μm resolution, 1.5μm accuracy). All share the same 25.4mm range and housing.
Q：Does this sensor require homing after power-up?
A：No. As an Absolute type sensor, it does not produce tracking errors and maintains reliable measurement data without needing to return to a zero point.
Q：What makes this sensor suitable for harsh environments?
A：It has an IP65 rating, meaning it is dust-tight and protected against low-pressure water jets. The fluoro rubber dust boot and aluminum alloy body further protect the internal components.
Q：What is the required power supply voltage?
A：The sensor operates on 5 VDC. Please ensure your power supply matches this voltage to prevent damage to the RS232/RS485 circuitry.
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