Contact NIR probe for contact and short distances measurements
The PAS-H-B04 contact sensor is designed for easy integration into piping, hoppers, or storage tanks. In addition to an integrated 10-W tungsten-halogen light source for sample illumination, the sensor head features fully automatic system calibration.
The measuring head is ideally suited for solid, liquid, or paste-like samples. Thanks to its compact size and low weight, the measuring head can be easily retrofitted into existing systems.
The contact measuring head is available in ATEX- and IECEx-certified versions.

Get in touch with our experts
Get in touch with our experts
Our specialists will help you design the right NIR solution for your process – from dairy and edible oils to agriculture and polymer applications.
Highlights of the PAS-H-B04 Contact Sensor Head
//- Adjustable spot size
- Integrated reference
- SMA 905 fiber-optic connector
- Industrial protection class IP64
- Stainless steel housing with sapphire window
- Integrated 10 W tungsten-halogen lamp
Applications for the NIR contact sensor head
The PAS-H-B04 is designed for direct contact NIR measurements of solids and pasty materials. Mounted in mixers, extruders or conveyor systems, it provides precise and repeatable inline data even under demanding process conditions. With its compact, stainless-steel design and fiber-optic connection, this probe is robust and easy to integrate into industrial environments.





Technical data and downloads
Reflection probe for measurement over short distances or in direct contact with the samples (tubes, chutes, funnels and more). Combines illumination and sensor unit compliant with food laws, ATEX and IECEX.
| Criteria | Value |
|---|---|
| Measurement Distance | 0 - 50 mm |
| Calibration | Automatic |
| Illumination | 10 W Tungsten |
| Housing | Anodized aluminum with stainless steel process adapter |
| Protection Class | IP66 / IP68 |
| Connection | SMA 905 optical fiber |
| Accessories | Various flanges and mounting devices |
Related products

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The Polytec Advanced Spectrometer (PAS) is a high-performance NIR spectrometer for fast and precise data acquisition. It is the ideal solution for demanding process analytics in food, agriculture, feed, polymer and recycling industries.

PAS-H-A03 Distance Sensor Head
The PAS-H-A03 distance sensor head is a reflection sensor head that allows the user to carry out sample measurements at distances of between 150 and 600 mm. This makes it ideal for analyzing goods being measured on conveyor belts, for strip products and for similar applications.

