This chemical flow meter control panel adopts modular design. It is fully functional, convenient to use and has a simple design. The large LCD display provides a clear reading. Can be used to measure methanol, kerosene, diesel, fuel, urea, water. Widely used in petroleum, chemical, medicine, transportation, food industry and business. Model: K24 Fluid: methanol, diesel, fuel, kerosene, urea water Inlet thread: G1 (BSPP) female Measurement accuracy: 1% Repeatability: 0.5% max. Pressure: 20BAR Working voltage: 2.3-3.3V Standby time: 2 years Flow range: 10-120 l / min Single number: 0.00-999.9 Total number: 0.00-999999.9 Weight: 253g / 8.9oz (Approx.) Package List: 1 * Turbine Flow Meter Instruction: 1. Set the unit of measure In the standby state or in the current quantity display state, press and hold the MENU RESET buttons for 5 seconds to enter the unit conversion setting, then press the RESET button to select the unit in sequence LTR - GAL - PT - QT - LTR. Press and hold the MENU button for 3 seconds to exit the unit conversion settings. 2. Reset total and current amount Press and hold the RESET button and the LCD screen will display in full screen, wait until the full screen display completes, then release the RESET button. At this point, the accumulated amount and the current amount are reset. 3. Query error rate and cumulative amount In standby state, press MENU RESET button at the same time, the LCD will show the error coefficient on the top line, and the cumulative value on the bottom line. 4. Error coefficient calibration In the standby state or in the current quantity display state, press and hold the MENU button for 3 seconds to enter the error coefficient calibration mode. The first digit flashes, press the MENU button to change the digit position and press the RESET button to change the digit. With the increase of this factor, the output amount of oil decreases. Then press and hold the MENU button for 3 seconds to complete the error coefficient calibration and return to the current quantity display state, and the current value will be reset to zero. The range of the calibration error factor is 0.1000 to 9.9999. For example, the original coefficient is 1,000, when it displays 100 liters of oil output, the actual oil capacity is 100 liters. If you need to reduce by 2 liters, set the factor to 1.020, then the capacity will be 98 liters. 5. Maintenance When the battery voltage is too low, the battery symbol appears on the LCD to remind the user to replace the battery. Too short battery life may damage the meter due to battery leakage. This meter has a designed standby time of about two years, but we suggest customer replace the battery every year and check the battery electrodes for rust. Remove the battery if you do not use the meter for a long time. Please be aware of: