Alicat Scientific’s portable mass flowmeters and liquid flowmeters utilize a nine-volt battery pack to aid in the metering gas flow, pressure or water flow in the field and in the lab. Portable meters can be used to: verify proper operation of flowmeters and flow controllers from any manufacturer; instantly take measurements in the field; and to quickly test for leaks in multiple processes or systems. The integrated battery pack can serve as backup power for hard-wired or wall-powered applications during brownouts, blackouts or other power-loss conditions.