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, compact structure, easy to install. 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; Requires 2 x AAA (LR03) batteries; Weight: 270g / 9.5oz. TROUBLESHOOTING: - Inaccurate readings: 1. Field calibration may be incorrect. Recalibrate the device. 2. Flow rate may be too low. Increase the flow rate. 3. Impeller may be blocked by dried liquid. Remove and clean the impeller, ensuring it turns freely. 4. Sealing material may be the impeller. Remove the meter and verify impeller movement. 5. Improper installation near the impeller. Reinstall correctly. 6. Excessive electronic noise or proximity to motors. Reinstall in a suitable location. - 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 rotation. 3. Sealing material may be the impeller. Remove and check impeller movement. - Low flow rate and meter not counting: Press the DISPLAY button to activate. 1. Impeller may be blocked by dried liquid. Clean and verify rotation. 2. Flow rate may be too low. Increase flow. COLOR: Blue + White MATERIAL: Plastic + Metal PACKAGE CONTENTS: 1 x Crude Oil Fuel Flow Meter Note: Light and display differences may cause slight color variations between the image and actual item. Measurement may vary by +/- 1-3 cm.