The NCMP-SMART portable ultrasonic transit-time flowmeter from Instruments Direct is capable of transmitting a strong signal multiple times a second, and communicates with BLE (Bluetooth, low energy) smart devices, such as phones, tablets, iPods and other Apple or Android brand devices with BLE functionality, allowing an operator to communicate with it for liquid applications. Because the operator provides the reading device, the cost of the unit is significantly less. 888/722-5543; www.instrumentsdirect.com.