With increasingly stringent environmental regulations and the implementation of standardized industrial safety production, accurate and rapid detection of VOCs (volatile organic compounds) has become a necessity. Tensensor's GD-PID series photoionization (PID) sensors, relying on mature ultraviolet photoionization technology, combine ultra-high sensitivity, wide range adaptability, compact structure, and ultra-long service life. They are the preferred core sensing component for five major scenarios: industrial safety, environmental monitoring, leak detection, cleanrooms, and emergency response. Leveraging its self-developed advantages, they have become a standard choice for manufacturers of gas detectors, online monitoring equipment, and portable leak detectors.

GD-PID Photoion sensor

    Five Core Product Advantages, Leading the Way in PID Sensors Across All Dimensions

    1. Ultra-Fast Response, Instant Hazard Detection

    The T90 product boasts a typical response time of only 4-8 seconds. It outputs an effective signal instantly upon sudden changes in gas concentration. In scenarios such as pipeline leaks, sudden explosions in workshops, and on-site emergency rescue, it can provide immediate data feedback, preventing safety accidents caused by excessive toxic gases. This is far superior to the tens of seconds response speed of conventional sensors.

    2. Graded Ultra-High Sensitivity, Full Coverage from ppb to 10,000 ppm

    The GD-PID adopts a multi-range customized selection design, with all 10.6eV lamp models covering a full range from 0~1ppb trace levels to 0~10,000ppm high concentrations: Micro range (0-1/2/5ppm) sensitivity >0.2~1mV/ppb, resolution as low as 100ppt; Medium range (0~20/50/100ppm) resolution 1~5ppb; Large range (0~1000/5000/10000ppm) resolution 50ppb~0.5ppm; High range (≥1000ppm) features dedicated linear compensation, further optimizing measurement accuracy. It can monitor trace organic volatiles in cleanrooms and handle high-concentration exhaust gas inspections in chemical industrial zones.

    3. Wide operating condition adaptability, stable operation in harsh environments

    Electrical: Wide voltage input of 3.2~5.5V, typical operating current 30mA, low power consumption compatible with portable battery-powered detectors; zero-point output 40~70mV, effective signal 0.04~3V, well-defined signal for easy connection to main control circuits;

    Environment: Operating pressure 80~120kPa, compatible with normal pressure and slightly negative pressure closed pipelines; wide temperature and humidity tolerance range, stable operation in variable industrial temperature and humidity environments, repeatability error <1% (depending on range), low long-term drift, and longer calibration cycle.

    4. Miniature Integrated Structure for Easy Integration

    The compact body size (tolerance ±0.2mm) and standard three-pin pin definition (VCC power, Vout signal, GND ground) with a Status Window for status observation (no soldering of pins) allow for easy embedding in fixed online monitoring instruments, handheld leak detectors, and explosion-proof detection modules, significantly reducing the difficulty of PCB layout and overall structure design for equipment manufacturers.

    5. Graded Long-Lasting Lamp Body for Cost Reduction Throughout the Lifecycle

    UV lamp lifespan varies by specification: 10.6eV standard configuration offers 13,000 hours of lifespan, 9.8eV lamps offer 9,000 hours, and 11.7eV lamps can reach 2,000 hours with dry, light-proof, and sealed storage. The excellent overall sensor lifespan significantly reduces the frequency of sensor replacements and lowers equipment maintenance costs.

     Five Major Application Scenarios, One-Stop VOC Detection Solution

    1. Industrial Safety Management (Petrochemical, Printing, Coating, Pharmaceutical)

    Used for VOC leak early warning in chemical plant storage tanks/pipelines, online monitoring of benzene series compounds in coating workshops, and monitoring of organic solvent volatilization in pharmaceutical production. Combined with PLC-linked ventilation and alarm systems, automatic interlocking for exceeding standards strengthens occupational health and safety defenses in workshops, meeting domestic safety production standards.

    2. Ecological Environment Monitoring (Environmental Enforcement, Industrial Park Grid Monitoring)

    Environmental enforcement personnel use portable devices with built-in GD-PID sensors for rapid on-site source tracing of fugitive emissions; core sensors in industrial park micro air stations and factory boundary online monitoring equipment upload VOC emission data in real time, meeting HJ environmental testing standards and facilitating compliant pollution control.

    3. Equipment Leak Inspection (Gas, Hazardous Chemical Storage)

    Handheld leak detectors equipped with sensors inspect pipeline flanges, valves, and enclosed spaces in hazardous chemical warehouses, quickly locating leaks at the ppb level and proactively preventing the accumulation of flammable and explosive gases.

    4. Cleanrooms (Semiconductor, Electronics, Precision Manufacturing) 

    Control of trace organic solvents in cleanrooms for chips and optical components. Low-range GD-PID captures ppb-level trace volatilization, ensuring a clean production environment and reducing product defects caused by organic impurities.

    5. Emergency Response (Hazardous Chemical Leaks, Waste Gas Accidents)

    Rapid screening of unidentified organic waste gases at environmental and fire emergency sites, quickly delineating the contaminated area, and guiding personnel protection and rescue operations. A core component of standard emergency equipment.

    From trace detection in the laboratory to 24/7 monitoring of high-risk chemical plants, the GD-PID photoionization sensor, with its high cost-performance ratio, full-range coverage, and high performance, breaks the high-price monopoly of imported PID sensors. Whether for instrument manufacturers procuring components or for environmental protection and industrial equipment upgrades, GD-PID is the preferred solution for VOC detection sensors, using precise photoionization technology to safeguard production safety and atmospheric health.

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