Vasthi’s VOC‑900‑2 PID Sensor-Based Ambient VOC Detector is a robust and reliable instrument designed for continuous monitoring of volatile organic compounds (VOCs) in ambient air. Built inside an explosion-proof stainless steel enclosure, it ensures safe operation in hazardous industrial environments while delivering accurate, real-time detection of VOC concentrations.

The detector uses a Photoionization Detector (PID) sensor, which is highly sensitive to heavier VOC fractions such as C4+ hydrocarbons and BTEX compounds (benzene, toluene, ethylbenzene, xylene). These fractions are critical indicators of gasoline vapor emissions and industrial VOC releases. By detecting these compounds quickly and precisely, the VOC‑900‑2 helps facilities maintain safer working environments and supports environmental monitoring programs.

Gas from the surrounding atmosphere reaches the sensor by diffusion, eliminating the need for pumps or complex sampling systems. The PID sensor generates an electrical signal proportional to the VOC concentration, which is processed by the transmitter electronics and communicated via RS‑485 digital output. This allows seamless integration with plant monitoring systems, SCADA, or control panels for alarm triggering, data logging, and compliance reporting.

The VOC‑900‑2 is engineered for 24/7 operation, with features such as zero and span calibration controls, replaceable sensor modules, and straightforward maintenance procedures. Its compact design, fast response time, and rugged construction make it ideal for ambient baseline monitoring, fence-line detection, leak detection and repair (LDAR) programs, and gasoline vapor emission monitoring from vent pipes or tank loading operations.

By combining industrial-grade durability with precision PID technology, the VOC‑900‑2 offers a dependable solution for monitoring VOCs in environments where safety, accuracy, and reliability are paramount.

FEATURES :

Ambient air containing volatile organic compounds (VOCs) diffuses naturally into the detector without the need for pumps or external sampling systems.