This digital turbine 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.Features:Modular design makes it suitable for use with output modules, sensors and remote transmitters. Light weight, compact structure, easy to install. Intuitive clear reading, high reliability, measuring accuracy is 1%. High-definition displays show both instantaneous and cumulative flow. Can be widely used to measure diesel, urea, kerosene, gasoline, etc. Specification:Thread size: 1inch BSPT female Material: PlasticColor: BlueRepetition: 0.5%Measure accuracy: 1%Maximum working pressure: 20BARFlow range: 10-90L/minSingle count: 0.00-9999.9Total cumulative count: 0-999999Error coefficient: 0.1000-9.9999Unit:L / GAL / PTS / QTSWorking temperature: -10C ~ +60C(14F~140F) Operating voltage: 2.3-3.3VApplication: Diesel, urea, kerosene, gasolineBattery type: 2 x AAA LRO3 batteries Weight: 270g / 9.5oz (approx.)Package list:1 x Turbine Flow meter Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.Malfunction and solution:The flow meter is not accurate. 1. The methodof field calibration is not correct. Calibrateagain. 2. The flow rate on the meter is below thelowest. Increasethe flow rate. 3. The flow meter is blocked by the dry liquid. Takeout the impeller and clean it carefully and make sure the impeller turnsfreely. 4. The impeller is wrapped by the sealingmaterial. Removethe meter and make sure the impeller turns freely. 5. Too close to the impeller. Installproperly. 6. Too close to the motor or electronic noiseenvironment Installproperly. The reading numbers faded or blanked out. 1.Batteryis exhausted or not connected Checkthe batteries or even replace them. Flow rate is normal but the meter can not count. Pressthe button of DISPLAY, the meter starts. 1.Field calibration is not correct. Calibrateagain. 2. The impeller is blocked ordamaged. Removethe meter and make sure the impeller turns freely. 3.The impeller is wrapped by the sealingmaterial. Removethe meter and make sure the impeller turns freely. Flow rate is low and the meter can not count. Pressthe button of DISPLAY, the meter starts. 1.The flow meter is blocked by the dry liquid. Takeout the impeller, clean it carefully and make sure the impeller turns freely. 2. The flow rate on the meter is below thelowest. Increasethe flow rate. The meter can not calibrate. 1.Circuit board is break down. Replacethe circuit board. 2. Button is fail to press. Replacethe circuit board. .