• ±0.5% of reading accuracy
  • 0.26 to 7.8 GPM (1 to 30 LPM) flow range
  • Six digit display
    • Shows Batch, Reset Total, Non-Reset Total
  • User selectable units (gallons, litres, pints or quarts)
  • 1/2 inch NPT connection
  • Lithium battery powered


The GPI LM51DN Lube Meter is a compact positive displacement flow meter for fluids with up to 1,000cp maximum viscosity. It is designed with an oval rotor for optimum accuracy and wetted components are constructed from aluminum, stainless steel, alnico, buna, and LCP (Liquid Crystal Polymer).

The LM51DN has a maximum working pressure of 1,500 PSI (103 BAR) and operates at temperatures of -4 to 140°F (-20 to 60°C).


This product can be used in the following applications: