Sick
Sick IM18-08N-N-ZW0 inductive proximity sensor M18 8 mm NAMUR NC IP67
M18 inductive proximity sensor detects metal at 8 mm with NAMUR NC output, IP67 housing, 2 m PVC cable, and ATEX approval for hazardous areas
- 8 mm sensing range detects metal targets reliably
- NAMUR NC output suits intrinsically safe circuits
- IP67 enclosure resists dust and water ingress
- 5–25 V DC supply fits standard control voltages
- 300 Hz switching frequency handles fast automation cycles
Sick IM18 inductive sensor 8 mm NAMUR
The Sick IM18-08N-N-ZW0 is a cylindrical inductive proximity sensor with an M18 thread and an 8 mm nominal sensing range. It operates on a NAMUR two-wire output configured as normally closed. The sensor suits industrial automation and hazardous-area installations where intrinsic safety is required. Its metal housing is rated IP67 for dust and water ingress protection.
Non-flush M18 mounting with two-wire cable
The sensor installs in a non-flush configuration using the two supplied fastening nuts on the M18 x 1 thread. A 2 m PVC cable with 0.5 mm² conductors carries the NAMUR signal and supply voltage of 7.5 V DC to 25 V DC. Installers must observe the 35 Nm maximum tightening torque and ensure the cable bend radius respects the 5.4 mm diameter. Exceeding torque or pinching the cable are the most common causes of early failure.
8 mm range with 6.48 mm safe operating distance
The sensor reliably detects metal targets up to 8 mm away, while the safe sensing range is specified at 6.48 mm for consistent operation across temperature and voltage variations. Switching frequency reaches 300 Hz, suitable for medium-speed counting or positioning tasks. At extreme temperatures near –20 °C or +70 °C, hysteresis and drift may reduce effective range. The NAMUR interface limits use to compatible intrinsically safe barriers; it cannot drive standard PLC inputs directly.
Highlights
- 8 mm sensing range detects metal targets reliably
- NAMUR NC output suits intrinsically safe circuits
- IP67 enclosure resists dust and water ingress
- 5–25 V DC supply fits standard control voltages
- 300 Hz switching frequency handles fast automation cycles
Specifications
| Brand | Sick |
|---|---|
| Model | SICK IM18-08N-N-ZW0 |
Questions about this item
How can I verify the sensor is operating correctly after wiring it to a NAMUR amplifier?
Measure the loop current: it should read about 2.2 mA when the target is absent and drop to 1 mA when a metal object enters the 8 mm sensing zone.
What accessories are included and what must I source separately?
Two M18 metal fastening nuts (24 mm across flats) are supplied; a NAMUR-compatible amplifier or intrinsically safe barrier and any additional cable length are not included.
Which sensing distance version should I select for a non-flush M18 mount?
This model provides an 8 mm nominal range (6.48 mm safe range) in a non-flush M18 housing; choose it when you need that reach behind the sensing face.
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