The IFM KG5079 is a capacitive NAMUR sensor designed for reliable object and level detection in hazardous areas. It provides an 8 mm adjustable sensing range with a normally closed NAMUR output. The sensor operates from 7.5 to 15 V DC and interfaces with certified intrinsically safe switching amplifiers. Its M18 × 1 threaded housing and IP67 protection support demanding industrial installations. A 6 m PVC cable, yellow status LED, and ATEX/IECEx approvals make it suitable for hazardous-area automation.
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The KG5079 detects changes in capacitance caused by nearby materials. Its 8 mm sensing range can be adjusted for application-specific positioning. The factory setting is 8 mm with a real sensing range of 8 ±10%. Correction factors support detection of glass, water, ceramics, and PVC. This provides dependable monitoring across different material conditions.
The sensor uses a NAMUR electrical design with a normally closed output function. It is intended for connection to certified intrinsically safe switching amplifier circuits. The specified circuit limits are 15 V, 50 mA, and 120 mW. Its nominal voltage is 8.2 V DC with a 1 kΩ reference condition. The 4 Hz switching frequency supports stable detection rather than high-speed counting.
The KG5079 is certified for hazardous gas and dust environments. Its ATEX marking is Ex II 1G Ex ia IIB T4 Ga and Ex II 1D Ex ia IIIC T135°C Da. The operating ambient temperature is -20 to 60°C. IP67 protection helps resist dust and water ingress. This combination makes the sensor appropriate for process equipment installed in classified areas.
8 mm adjustable capacitive sensing range
NAMUR normally closed output
7.5–15 V DC supply
4 Hz switching frequency
M18 × 1 threaded housing
IP67 protection
6 m PVC cable
Yellow switching-status LED
ATEX and IECEx certified
PBT housing
Hazardous-area position detection
Tank and vessel level monitoring
Dry bulk material detection
Liquid presence monitoring
Process equipment monitoring
Conveyor position sensing
Chemical processing equipment
Dust-zone automation
The KG5079 is suited to installations where conventional sensors cannot be used safely. Its intrinsically safe NAMUR architecture simplifies connection to approved switching amplifiers. The adjustable sensing range allows installation tolerances to be compensated. The 6 m cable can reduce the need for additional field connection points. It is particularly useful where certified sensing equipment is required close to the process.
The sensor uses an M18 × 1 threaded body for straightforward mounting. Its non-flush installation provides the specified 8 mm capacitive detection distance. The PBT housing provides a lightweight industrial construction. Two lock nuts are supplied for mechanical positioning. The 320 g sensor has an overall M18 × 1 / 84 mm dimensional envelope.
| Specification | Value |
|---|---|
| Model | KG5079 |
| Order code | KG-2080-N/6M/1D/1G |
| Sensor type | Capacitive NAMUR |
| Output function | Normally closed |
| Electrical design | NAMUR |
| Sensing range | 8 mm |
| Adjustable range | Yes |
| Factory setting | 8 mm |
| Real sensing range | 8 ±10% |
| Operating voltage | 7.5–15 V DC |
| Nominal voltage | 8.2 V DC |
| Reference resistance | 1 kΩ |
| Current consumption | <1 mA |
| Conductive-state current | >2.2 mA |
| Switching frequency | 4 Hz |
| Switching amplifier connection | Yes |
| Maximum circuit voltage | 15 V |
| Maximum circuit current | 50 mA |
| Maximum circuit power | 120 mW |
| Protection class | II |
| Ambient temperature | -20 to 60°C |
| Protection rating | IP67 |
| Hysteresis | 1–15% Sr |
| Switch-point drift | -15 to +15% Sr |
| Correction factors | Glass 0.4 / Water 1 / Ceramic 0.2 / PVC 0.2 |
| Housing | PBT |
| Thread | M18 × 1 |
| Dimensions | M18 × 1 / L84 mm |
| Cable | 6 m PVC, 2 × 0.5 mm² |
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