Versatile, robust, miniaturized, IoT-by-design chemical detector for mounting on-board robotic vehicles and UAVs. Equipped with the Symbiotic Engine, breakthrough software that provides a state-of-the-art Human Machine Interface; it allows sharing of resources among hardware, software and firmware.
T4i DOVER™: GC-PID Version
SMS (Sample Modulation Separation): the core technology of T4i DOVER®
Fast, dynamic, sampling system and fast, LTM GC in one miniaturized unit. Hyphenated with PID for ultra-low detection limits (0.5 ppb), fast response times (3-4 s). Higher detection levels (ppm) are also available.
SMS unit: 1. Sample inlet 2. Small tube for sharp sample injections as short as 100ms 3. COTS capillary column (30cm – 15m long) 4. Low Thermal Mass Gas Chromatography.
Sampling air spiked with oxathiane (A) and divinylsulfoxide (B) at 10ppm for 4s through a 2m GC column at 3ml/min and isothermal at 60°C. Y-axis sensor output (mV), X-axis time (s). Sensor response at different concentrations of divinyl sulfoxide and 1,4-oxathiane at 50°C and 60°C GC temperature levels when sampling for 4 seconds. Y-axis sensor output (mV), X-axis concentration (ppb). Ref: George C. Pallis, George P. Psarras, Julia Vamvakari, Matti J. Kuula, Harri Kiljunen, Hanna I. Lignell, Paula Vanninen, A fast, miniaturized, real-time unit for sampling, modulation and separation in detection of hazardous chemicals, Anal. Chem. 2020, 92, 21, 14589–14593
Fusion of chemical signals with thermal Images
T4i DOVER® combines thermal images with chemical signals to enhance detection and identification of compounds and events. Firmware and software integrate two orthogonal techniques to improve performance, increase efficiency and support the reliability of results.
