This flowmeter has multi-gas functionality
The intelligent digital DPM precision multi-parameter gas flowmeter (photo) is designed to measure mass flowrates, pressure, and the temperature of clean, non-corrosive process gases. The unit’s user-defined mixture functionality allows the user to create and store up to 20 custom gas mixes with up to five different gases each. The DPM allows on-site selection of 30 different local gases via the optional OLED/joystick interface or remotely via the RS-232/RS-485 or optional Modbus RTU interface. The device has a flow accuracy of±(0.5% output reading + 0.2% full scale) at calibration temperature and pressure, a 200-to-1 turndown ratio and a 10-ms response time. — Aalborg Instruments, Orangeburg, N.Y.