MODULAR DESIGN: The modular design makes it suitable for use with output modules, sensors, and remote transmitters. HIGH QUALITY: Features intuitive clear reading, high reliability, and measuring accuracy of +/- 1%. Lightweight and compact structure for easy installation. INSTANTANEOUS AND CUMULATIVE FLOW: High-definition display shows both instantaneous and cumulative flow. WIDE APPLICATION: This turbine flow meter can be widely used to measure crude oil, urea, gasoline, and similar liquids. SPECIFICATIONS: Thread size: 1 inch NPT female; Repetition: +/- 0.5%; Measurement accuracy: +/- 1%; Maximum working pressure: 20 BAR; Flow range: 15-120 L/Min; Single count: 0.00-9999.9; Total cumulative count: 0-99999; Error coefficient: 0.1000-9.9999; Units: L / GAL; Working temperature: -10C to +60C (14F to 140F); Operating voltage: 2.3-3.3V; Compatible with crude oil, urea, gasoline; Battery type: 2 x AAA (LR03) batteries; Weight: 270g / 9.5oz. TROUBLESHOOTING: - Inaccurate readings: 1. Field calibration may be incorrect. Recalibrate. 2. Flow rate may be too low. Increase flow rate. 3. Impeller may be blocked by dried liquid. Remove, clean, and ensure free rotation. 4. Impeller may be obstructed by sealing material. Remove and inspect. 5. Improper installation near impeller. Reinstall correctly. 6. Excessive electronic noise or proximity to motor. Relocate or reinstall properly. - Faded or blank display: Battery may be depleted or improperly connected. Check or replace batteries. - Flow rate normal but meter not counting: Press the DISPLAY button to activate. 1. Field calibration may be incorrect. Recalibrate. 2. Impeller may be blocked or damaged. Inspect and ensure free movement. 3. Impeller may be obstructed by sealing material. Remove and inspect. - Low flow rate and meter not counting: Press the DISPLAY button to activate. 1. Impeller may be blocked by dried liquid. Clean and verify free rotation. 2. Flow rate may be too low. Increase flow rate. Color: Blue + White Material: Plastic + Metal Package Contents: 1 x Crude Oil Fuel Flow Meter Note: Other accessories are not included. Note: Lighting and display settings may cause slight color variation between image and actual item. Measurement error allowed: +/- 1-3 cm.