Features:This chemical flow meter control panel adopts modular design.It is fully functional, convenient to operate and has simple structure. Large LCD display is convenient for clear reading.It can be used to meter methanol, kerosene, diesel, fuel, urea water.Widely used in petroleum, chemical industry, medicine, transportation, food industry and business field. Specification:Model: K24 Fluid: Methanol, diesel, fuel, kerosene, urea waterInlet Thread: G1 (BSPP) femaleMeasurement Accuracy: ±1%Repeatability: ±0.5%Maximum. Pressure: 5BAR Working Voltage: 2.3-3.3VStandby Time: 2 yearsFlow Range: 10-90L/MINSingle Count: 0.00-9999.9Total Count: 0.00-999999.9 Weight: 253g / 8.9oz (approx.)Package list:1 * Turbine Flow MeterNote: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.Instruction: 1. Measuring Unit SettingUnderstandby state or current amount display state, press and hold MENU+RESET buttons for 5 seconds to enter unit conversion setting, then press RESET button to select unit in turn of LTR - GAL - PT - QT - LTR. Press and hold MENU button for 3 seconds to exit unit conversion setting.2. Accumulative and Current Amount ResetPress and hold RESET button and LCD screen displays on full screen, wait till the full screen display end then loose the RESET button. At this timethe accumulative amount and current amount is reset.3. Error Coefficient and Accumulative Amount InquireUnderstandby state, press MENU + RESET button together, then LCD display shows the error coefficient on the upper row, and accumulative amount onthe lower row.4. Error Coefficient CalibrationUnder standby state or current amount display state, press and hold MENU button for 3 seconds to enter error coefficient calibration mode. The first digit flashes, press MENU button to change position of the digit, and press RESET button to change digit. As this coefficient increases, output oilquantity reduces. Then press and hold MENU button for 3 seconds to end error coefficient calibration and return to current amount display state, and the current amount is reset as zero. The calibration error coefficient range is 0.1000 to 9.9999. For example, original coefficientis 1.000, when it displays 100 liters output of oil, the actual oiloutput is 100 liters. If you need 2 liter reduced, set the coefficient as 1.020, then the output would be 98 liters. 5. MaintenanceWhenbatteryvoltage is too low, a batterysymbolappears on the LCD display, which reminds user to replace battery. Too short batterylife can cause damage to the meter because of batteryleakage. This meter hasdesigned standby life of about two years, but we suggest customer to replace a batteryeach year, and check batteryelectrodes if there is any rust. Batteryshould be removed if not using flowmeter during longtime. .