The Rechner Sensors Model KXS-250-M8/25-X-M8-PTFE/VAb-250C-X02/Y95 Capacitive Sensor Probe (Item Number: 498001), engineered and manufactured by Rechner Industrie-Elektronik GmbH in Lampertheim, Germany, is an ultra-high-temperature non-contact capacitive sensing head designed specifically for demanding presence sensing and material level monitoring in environments reaching up to +250°C (+482°F).

Extreme Temperature Architecture (+250°C Thermal Rating):
Standard industrial capacitive proximity sensors incorporate on-board signal processing electronics within the sensor body, restricting continuous operating temperatures to a maximum of 70°C or 100°C. Attempting to deploy integrated sensors in hotter zones results in rapid electronic failure. The Rechner KXS Series overcomes this physical limitation by utilizing a remote sensor head architecture:
- The probe body contains zero delicate electronic components or semiconductor junctions. The capacitive sensing field is maintained purely through heavy-duty PTFE insulation and precision-machined stainless steel geometry.
- Low-loss capacitive signals travel across a specialized high-temperature triaxial cable to an external electronic evaluation unit (Rechner KXA or KAS amplifier series) mounted safely away in an ambient-temperature control cabinet.

Model Code Architecture Breakdown (498001 / KXS-250-M8/25-...):
- KXS: Remote capacitive sensor probe series engineered for pairing with external amplifier units.
- 250: Certified for continuous ambient and process immersion temperatures up to +250°C (+482°F).
- M8/25: Threaded barrel size of M8 x 1 with a 25 mm housing length, offering an ultra-compact footprint for spatially restricted machinery walls.
- PTFE/VAb: High-purity PTFE active sensing face combined with a corrosion-resistant VAb stainless steel body (AISI 303 / 1.4305).
- 250C: Rated for continuous +250°C thermal exposure.
- X02 / Y95: Specialized triaxial high-temperature connection cable terminated with a precision Triax/Lemo connector for secure amplifier interfacing.

Key Engineering Features & Operational Advantages:
- Universal Material Sensing Capability: Evaluates changes in dielectric constants, enabling reliable non-contact detection of virtually any target substance: metals, aqueous fluids, thermal oils, hot-melt glues, molten polymers, plastic pellets, ceramic powders, and glass.
- Chemically Inert & Non-Stick Construction: The virgin PTFE active sensing face prevents sticky hot-melt adhesives and polymer residues from baking onto the sensor face, while the VAb stainless steel sleeve resists chemical attack from organic solvents and aggressive cleaning solutions.
- Miniature M8 x 1 Metric Form Factor: The 8 mm barrel diameter allows direct threading into tight die blocks, extruder throats, and laboratory pilot equipment without compromising structural mechanical integrity.
- Triaxial Shielding for Noise Immunity: Utilizes triaxial cable construction featuring an actively driven guard layer, completely neutralizing parasitic cable capacitance and electromagnetic interference generated by adjacent heating elements and high-frequency power switching.

Target Industrial Sectors & Applications:
- Plastics & Rubber Processing: Polymer pellet level detection in hopper dryers, melt presence confirmation in extruder feed throats, and hot-melt glue dispensing verification in automated packaging.
- Chemical & Pharmaceutical Processing: Monitoring hot solvent distillation columns, high-temperature reaction vessels, and agitated tank levels.
- Ceramics, Glass & Metallurgy: Tracking hot workpieces, refractory powder levels, and pre-heat oven conveyor feeding.
- Industrial Paint & Surface Finishing: Vehicle skid presence tracking inside high-temperature automotive paint drying tunnels.

• Manufacturer: Rechner Sensors (Rechner Industrie-Elektronik GmbH)
• Country of Origin: 100% Germany (Made in Germany)
• Product Line: KXS Series Extreme Temperature Capacitive Probes
• Order / Item Number: 498001
• Model Designation: KXS-250-M8/25-X-M8-PTFE/VAb-250C-X02/Y95
• Sensing Technology: Remote Capacitive Non-Contact Sensing Principle
• System Configuration: Sensing probe only without internal electronics (Requires external Rechner KXA Series amplifier)
• Nominal Sensing Distance (Sn): Approx. 1.5 mm (adjustable via external amplifier, target material dependent)
• Mounting Profile: Flush or non-flush mountable (configurable via calibration)
• Permissible Operating Temperature Range: -70°C to +250°C (-94°F to +482°F)
• Thread Size & Profile: M8 x 1 mm metric thread
• Threaded Housing Length: 25 mm
• Housing Metallurgy: High-grade VAb Stainless Steel (1.4305 / AISI 303)
• Active Face Material: High-purity Virgin PTFE (Teflon)
• Ingress Protection Rating: IP67 at sensor probe head per EN 60529
• Signal Cable Interface: Specialized high-temperature triaxial cable
• Amplifier Connector Type: Triax / Lemo connector (Y95 configuration)
• Compatible External Amplifiers: Rechner KXA-... or KAS-... evaluation modules
• Mechanical Pressure Resistance: Withstands standard industrial chamber process pressures
• Quality Certifications: CE marked, RoHS compliant, ISO 9001 certified manufacturing.