The VT900A Gas Flow Analyzer is a high accuracy ventilator and gas flow testing device designed for respiratory equipment such as ventilators, anesthesia machines, and flow meters. It measures air flow up to ±300 lpm and includes built in oxygen, temperature, and humidity sensors, as well as ultra low flow and pressure ports for precise low volume testing. Featuring a 7 inch touchscreen, onboard data storage, and USB data transfer, it provides reliable, traceable measurements for both clinical and field environments.