The IFM KD501A is a large rectangular PNP capacitive sensor designed for long-range detection in industrial and hazardous dust applications. It provides an adjustable 60 mm sensing range with selectable normally open and normally closed operation. The sensor operates from 10 to 36 V DC and provides a 250 mA continuous output. Its ATEX II 3D certification and IP65 protection support specified explosive-dust environments. The sensor uses a robust 105 × 80 × 42 mm non-flush housing.
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The KD501A provides a 60 mm sensing range with a real sensing range of 60 ±10%. The operating range extends from 0 to 48.6 mm. Its sensing range is adjustable for application-specific setup. Hysteresis is 1 to 15% of Sr. Material correction factors are specified for glass, water, ceramics and PVC.
The sensor uses a DC PNP output with selectable normally open and normally closed operation. It operates from 10 to 36 V DC and provides a 250 mA continuous output. Switching frequency is 10 Hz. Short-circuit and overload protection are provided. Reverse polarity protection is also included.
The KD501A carries ATEX marking II 3D Ex tc IIIC T90°C Dc X IP65. Its specified ambient temperature range is -20 to 60°C. The housing combines modified PPE and PA materials. The rectangular sensor measures 105 × 80 × 42 mm and weighs approximately 279.5 g. A yellow LED indicates switching status.
60 mm sensing range
Adjustable sensing range
DC PNP output
NO / NC selectable
10...36 V DC
250 mA continuous current
10 Hz switching frequency
Short-circuit protection
Overload protection
Reverse polarity protection
ATEX II 3D certification
Ex tc IIIC T90°C Dc X
IP65 protection
105 × 80 × 42 mm
Non-flush mounting
Modified PPE housing
PA components
Yellow LED
Increased electromagnetic immunity
MTTF 537 years
Hazardous dust-area detection
Bulk material monitoring
Dust-prone process machinery
Tank level monitoring
Container detection
Process automation
Filling systems
Packaging equipment
Material presence detection
Industrial automation
The ATEX certification makes the KD501A suitable for specified Category 3 dust environments. Installation must comply with the applicable hazardous-area requirements. The 60 mm sensing range provides useful detection distance for large process equipment. The robust rectangular housing supports stable mounting. IP65 protection adds resistance to dust and water ingress.
The adjustable sensing range allows the detection point to be optimized during setup. Selectable NO/NC operation provides control-system flexibility. The yellow LED gives direct switching feedback. The PNP output supports conventional DC industrial control systems. Integrated electrical protection improves reliability during normal machine operation.
| Specification | KD501A |
|---|---|
| Product type | Capacitive sensor |
| Order code | KDE3060-FPKG/NI/3D |
| Measuring principle | Capacitive |
| Electrical design | PNP |
| Output function | NO / NC selectable |
| Sensing range | 60 mm |
| Adjustable sensing | Yes |
| Factory setting | 60 mm |
| Real sensing range | 60 ±10% |
| Operating distance | 0...48.6 mm |
| Hysteresis | 1...15% |
| Switch-point drift | -15...15% |
| Glass correction | 0.4 |
| Water correction | 1 |
| Ceramics correction | 0.2 |
| PVC correction | 0.2 |
| Operating voltage | 10...36 V DC |
| Current consumption | 15 mA at 24 V |
| Protection class | II |
| Reverse polarity protection | Yes |
| Voltage drop | 2.5 V max. |
| Continuous output current | 250 mA |
| Switching frequency | 10 Hz |
| Short-circuit protection | Yes |
| Overload protection | Yes |
| Ambient temperature | -20...60°C |
| Protection rating | IP65 |
| ATEX marking | II 3D Ex tc IIIC T90°C Dc X |
| Increased immunity | Yes |
| Housing | Modified PPE / PA |
| Dimensions | 105 × 80 × 42 mm |
| Mounting | Non-flush |
| Weight | 279.5 g |
| Indicator | Yellow LED |
| MTTF | 537 years |
| Connection | Terminals |
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