Engineered Measurement for SCR Control

The PEX 193NOX2006 is a NOx sensor for Paccar diesel exhaust aftertreatment systems, engineered in Germany for high accuracy and stability. It measures nitrogen oxides in high-temperature, high-flow exhaust to support precise selective catalytic reduction (SCR) control and optimize DEF usage. With sub‑second response (<1 s), the sensor delivers real‑time feedback during rapid load and speed changes, helping maintain emissions compliance and avoid warning indications. Flexible placement upstream of the SCR monitors engine-out NOx for dosing strategy, while downstream placement verifies catalyst efficiency and supports diagnostics across the SCR, DPF, and EGR subsystems. The sensor’s signal output is proportional to NOx concentration, allowing the ECU to manage dosing and log fault conditions based on measured values.

Built for Heat, Vibration, and Fast Installation

Designed for severe-duty environments, this unit withstands extreme exhaust temperatures in the 800–900°C range, vibration, and corrosive gases common to heavy-duty service. Rugged materials and sealed construction help protect the sensing cell for dependable performance across long duty cycles. Plug‑and‑play connectors and harnessing streamline replacement in Paccar applications to reduce bay time. Heater‑assisted NOx sensing technology used in heavy‑duty platforms supports rapid warm-up for stable readings shortly after start-up, improving early closed-loop control. Whether installed upstream or downstream, the 193NOX2006 gives maintenance teams the accurate data needed to fine-tune DEF dosing, validate aftertreatment repairs, and keep fleets on schedule.