Sick
Sick VTE18-3N8840 photoelectric proximity sensor NPN
Photoelectric proximity sensor detects objects from 10 mm to 700 mm using infrared LED with potentiometer adjustment and NPN dark-switching output
- NPN output simplifies integration with common PLC inputs
- 10–700 mm sensing range covers close and mid-range detection
- Infrared LED with 2.8° beam angle reduces false triggers
- IP67 enclosure withstands dust and water jets
- 10–30 V DC supply fits standard industrial power rails
Industrial Proximity Sensing
The Sick VTE18-3N8840 is a photoelectric proximity sensor built for industrial automation and machine monitoring. It detects objects using an infrared LED with a narrow 2.8° dispersion angle. The cylindrical, angled housing measures 75 mm and carries an IP67 enclosure rating for dust and water protection. It operates on 10 V DC to 30 V DC supply voltage.
Potentiometer Adjustment & M12 Connection
A built-in potentiometer allows on-site sensing-range adjustment between 10 mm and 700 mm, with a maximum reach of 800 mm. The dark-switching NPN output changes state when the beam is interrupted. Connection is made through a 4-pin M12 male connector, simplifying installation in standard control cabinets. Response time is 2 ms and power consumption is 30 mA.
700 mm Reliable Range
The sensor comfortably handles presence detection and short-range counting tasks up to 700 mm in temperatures from –25 °C to +70 °C. Beyond that distance the infrared beam loses margin and detection becomes inconsistent. Plastic housing and PMMA optics resist corrosion but are not suited for heavy mechanical impact or aggressive chemical exposure.
Highlights
- NPN output simplifies integration with common PLC inputs
- 10–700 mm sensing range covers close and mid-range detection
- Infrared LED with 2.8° beam angle reduces false triggers
- IP67 enclosure withstands dust and water jets
- 10–30 V DC supply fits standard industrial power rails
Specifications
| Brand | SICK |
|---|---|
| Model | SICK VTE18-3N8840 |
Questions about this item
How often should the potentiometer be re-calibrated to keep the 700 mm sensing range accurate?
The potentiometer allows manual adjustment of the switching point; no periodic re-calibration is required unless the application or mounting position changes.
What limits continuous operation first — the 30 mA current draw or the 70 °C temperature ceiling?
The ambient operating limit of +70 °C is reached before the 30 mA power consumption becomes a constraint in typical 10–30 V DC installations.
Does the IP67 housing stay cool enough for 24-hour duty without extra ventilation?
With a low 30 mA draw and plastic housing rated to +70 °C, the sensor runs cool enough for continuous operation in free air; no forced ventilation is needed.
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