Description: This digital flow meter has modular design, high accuracy, compact size and stable performance. Easy to replace and maintain internal components. Suitable for use with output modules, sensors and remote transmitters. Specification: Operating voltage: 2.33.3V Battery type: 2 x AAA LRO3 batteries Thread size: 1inch NPT Repetition: ±0.5% Measure accuracy: ±1% Maximum working pressure: 20BAR Flow range: 15120L / Min Single count: 0.009999.9 Total cumulative count: 099999 Mistakes count: 0.10009.9999 Working temperature: 10°C ~ +60°C(14°F~140°F) Standby time: 1 year Application: Diesel, kerosene, gasoline Color: Red, Blue(Optional) Weight: 371g Malfunction and solution: The flow meter is not accurate. 1. The method of field calibration is not correct. Calibrate again. 2. The flow rate on the meter is below the lowest. Increase the flow rate. 3. The flow meter is blocked by the dry liquid. Take out the impeller and clean it carefully and make sure the impeller turns freely. 4. The impeller is wrapped by the sealing material. Remove the meter and make sure the impeller turns freely.