Alicat Whisper mass flow meters and controllers

The Whisper series mass flow meters and controllers from Alicat are suitable for low pressure drop applications. With full-scale flow rates from 0.5 SCCM to 500 SLPM in both meters and controllers and pressure drops from 0.2 to 2.0 PSID, even the most pressure-challenged applications, or applications requiring the use of expensive gases, will be able to benefit from true mass flow measurement and control.

When using expensive gases or systems with little total pressure, pressure drop becomes a serious consideration. The mass flow meters are designed specifically for low pressure drop applications. By using the company’s LFE and flow cavity design, the product is able to deliver good performance with as little as 0.1 PSID.

The mass flow meters and controllers are designed to be used as stand-alone devices. With the native display, the user can change the configuration of the meter or controller without the need for computers, complicated software or scripts. This configurability includes setpoint and PID loop parameters on controllers.

Features include: fully functional digital display; multiple parameter measurement; very low pressure drop operation; no warm-up time; RS232 multidrop digital output; RS232 multidrop digital input (controllers only); choice of 0-5, 0-1 or 1-5 VDC analog output; choice of 0-5, 0-1 or 1-5 VDC, or 4-20 mA, analog input (controllers only); 30 user-selectable onboard gas calibrations; 200:1 turndown ratio; can be ordered in any flow range between 0.5 SCCM and 3000 SLPM.