QEM Series In-Line Ultrasonic Flow Meters For Low Viscosity Liquid OEM Applications

The QEM Series in-line ultrasonic flow meter has been specifically designed for applications that require excellent accuracy & reliability at an OEM price point. The compact QEM Series has no moving parts; this results in a very rugged, reliable and accurate flow meter. The small footprint, lightweight device is ideal for low viscosity liquid applications including water, water-based products, oils, and its plastic and stainless steel construction makes it the meter of choice for many corrosive fluids.


  • Flow rates to 65 gpm, 3/4″, 1″, 1-1/4″
  • Accuracy: Uncalibrated, +/-2% of reading typical over a 10:1 turndown
  • Accuracy: Calibrated, +/-0.25% of reading plus zero stability over a 20:1 turndown
  • Repeatability: +/-0.10% over 20:1 turndown
  • Temperature Range: -10° to 80° C (14° to 176° F)
  • Outputs: Analog, scaled frequency and Modbus RTU over EIA485