Hoenle QSO3 Inline Sensor 301 06903 0000

The Hoenle QSO3 Inline Sensor is a robust UV monitoring solution designed for reliable, continuous measurement of medium-pressure UV lamps and UV LEDs in demanding industrial environments. High UV intensity and elevated temperatures can make stable UV measurement challenging. The QSO3 addresses these conditions with carefully selected materials and a specialized quartz rod system, providing a durable and practical solution for online UV monitoring. The QSO3 is designed as a relative measuring device because UV readings are strongly influenced by the sensor's mounting position. Under reference conditions, the reading is set to 100% with a new lamp, reflector, or comparable setup. The sensor can then continuously monitor changes in UV output during operation. Its extended stainless steel protection tube allows the sensor to be installed close to the UV source, including at the edges of a reflector. Air purging is also available to help protect the measuring area in demanding operating environments. CureUV is an authorized Hoenle distributor, providing professional UV measurement and process monitoring solutions for industrial applications. Key Features Designed for continuous online UV monitoring Suitable for medium-pressure UV lamps and UV LEDs Designed for high UV intensity applications Robust construction for elevated-temperature environments Specialized quartz rod measuring system Relative UV measurement for monitoring changes in UV output Reference value can be set to 100% with a new lamp, reflector, or comparable setup Multiple spectral range options available Adjustable amplification factors 0–10 V DC proportional output signal Stainless steel protection tube Optional air purging connection Designed for installation close to the UV source Applications The Hoenle QSO3 Inline Sensor is suitable for continuous UV monitoring in a variety of industrial applications, including: UV curing systems UV LED curing Industrial printing Converting UV lamp performance monitoring UV process control Air disinfection Surface disinfection Continuous monitoring of UV output Available UV Spectral Ranges The QSO3 is available in configurations for different UV spectral ranges: Sensor Range Spectral Range UVA 315–395 nm UVB 265–325 nm UVC 230–280 nm UVV 380–445 nm UV LED 380–445 nm Technical Specifications Specification Value UV Measuring Range UVA: 315–395 nm UVB: 265–325 nm UVC: 230–280 nm UVV: 380–445 nm UV LED: 380–445 nm Measuring Range 20–2,000 mW/cm² Extended Measuring Range 250–25,000 mW/cm² Amplification Factors 1, 10, 100, 1,000, and 0.3 in combination Output Signal 0–10 V DC, proportional to irradiance, max. 2 mA Auxiliary Voltage 24 V DC, max. 5 mA Measuring Distance Approx. 0.79–3.94 in (20–100 mm) from UV source Maximum Permissible Intensity 10,000 mW/cm² for max. 10 minutes Maximum Permissible Intensity 30,000 mW/cm² for max. 10 seconds Air Purging 1/8 in connection, max. 0.5 bar Sensor Box Dimensions Approx. 1.77 × 1.77 × 1.34 in (45 × 45 × 34 mm) Stainless Steel Protection Tube 5.51 in (140 mm) long × 0.31 in (8 mm) diameter Weight Approx. 7.05 oz (200 g) Sensor Box Operating Temperature 59–122°F (15–50°C), continuous Quartz Rod Temperature at Measuring Window Approx. 572°F (300°C) End of Stainless Steel Tube Temperature Up to 572°F (300°C), continuous Relative UV Measurement Unlike an absolute UV measuring instrument, the QSO3 is designed as a relative measuring device. The initial reference condition is set to 100%, typically using a new lamp, reflector, or comparable setup. The sensor can then monitor changes in UV output over time. This makes the QSO3 particularly useful for identifying changes in lamp performance and maintaining consistent UV process conditions. High-Temperature and High-Intensity Operation The QSO3 is designed for demanding environments where both high UV intensity and elevated temperatures can affect measurement stability. The sensor features a specialized quartz rod system and a stainless steel protection tube that allows the measuring point to be positioned close to the UV source. The quartz rod at the measuring window can withstand temperatures of approximately 572°F (300°C), while the end of the stainless steel tube is rated for continuous operation up to 572°F (300°C). Machine Integration The QSO3 provides a 0–10 V DC output signal proportional to UV irradiance, allowing the sensor to be integrated into machine control and process monitoring systems. Adjustable amplification factors of 1, 10, 100, and 1,000, with an additional 0.3 combination setting, allow the sensor to be adapted to different UV intensity levels. Air Purging The QSO3 includes an air purging option through a 1/8 in connection with a maximum pressure of 0.5 bar. This can be used to help protect the measuring area in demanding industrial environments. Reliable Continuous UV Monitoring Continuous UV monitoring can help detect changes in UV output during production and support stable process conditions. By monitoring relative UV intensity directly at the UV source, the Hoenle QSO3 provides a practical solution for applications where consistent UV performance is critical. CureUV is an authorized Hoenle distributor, supplying Hoenle UV measurement and process monitoring equipment for professional and industrial applications.