This listing is for the ATi Portsens111 Gas Leak Detector The unit is in full working condition and is ready for immediate use The ATI PortaSens III is a portable, handheld gas leak detector designed for locating and measuring gas leaks across a wide range of environments—from chemical plants to pharmaceutical labs, food processing facilities, and confined spaces Key Features & Capabilities Interchangeable Smart Sensors Attaches a variety of pre‑calibrated smart sensor modules, each combining sensor, amplifier, and memory into one. These allow detection of 30 to over 60 different gases, depending on configuration Swapping sensors takes under a minute and requires no user calibration Built-in Sampling Pump & Flexible Wand Enables pinpoint detection of leak sources via one‑hand operation Color Touch-Screen Display Features a backlit, graphic or touch-enabled LCD for easy reading in all lighting conditions Data Logging & Connectivity Includes a 4 GB internal data-logger, capturing millions of data points. Log intervals are programmable from 1 to 60 minutes, with USB connectivity for data transfer Power Options Runs on either rechargeable NiMH “D” cell battery or traditional alkaline D-cell batteries Alarms & Alerts Offers both visual and audible alarms—including low flow and low battery warnings—plus multiple gas concentration thresholds Supported Gases The D16 PortaSens III can detect a broad spectrum of gases, including but not limited to: Toxic gases: Hydrogen sulfide (H₂S), hydrogen peroxide (H₂O₂), formaldehyde, chlorine, sulfur dioxide, ammonia, and others Common industrial gases: Oxygen (O₂), ozone (O₃), carbon monoxide, carbon dioxide Specialty/exotic gases: Arsine (AsH₃), diborane, ethylene oxide, phosphine, silane, bromine, iodine, and more