Features: The chemical flow meter control panel is modular in design. It has complete functions, convenient operation and simple structure. The large LCD display facilitates clear reading. Can be used to measure methanol, kerosene, diesel, fuel, urea water. Widely used in petroleum, chemical, pharmaceutical, transportation, food industry and commercial fields. Specifications: Model: K24 Fluid: Methanol, Diesel, Fuel, Kerosene, Urea Water Inlet/Outlet Thread: G1 (BSPP) Measurement Accuracy: 1% Repeatability: 0.5% Maximum Pressure: 20BAR Working Voltage: 2.3-3.3V Standby Time: 2 years Flow range: 10-120L/MIN Single count: 0.00-999.9 Total count: 0.00-999999.9 Command: 1. The measurement unit is set in the standby state or the current volume display state, press and hold the MENU + RESET button for 5 seconds to enter the unit conversion setting, then press the RESET button to select LTR-GAL-PT-QT-LTR in sequence. Press and hold the MENU button for 3 seconds to exit the unit conversion setting. 2. Accumulation and current reset Press and hold the RESET button, the LCD screen will display in full screen, wait until the full screen display ends, and then release the RESET button. At this time, the accumulated amount and the current amount are reset. 3. Inquiry of error coefficient and accumulated amount In standby state, press MENU + RESET buttons simultaneously, then the LCD display will display the error coefficient on the upper line and the accumulated amount on the next line. 4. Error coefficient calibration In the standby state or 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, then press the RESET button to change the digit. As the coefficient increases, the oil output decreases. Then press and hold the MENU button for 3 seconds to end the error coefficient calibration and return to the current volume display state, and the current volume is reset to zero. The calibration error coefficient range is 0.1000 to 9.9999. For example, the original coefficient is 1.000, when it shows the oil output of 100 liters, the actual oil output is 100 liters. If you need to reduce 2 liters, set the factor to 1.020 and the output is 98 liters. 5. Maintenance When the battery voltage is too low, a battery symbol will appear on the LCD to remind the user to replace the battery. Short battery life can damage the meter due to battery leakage. The meter is designed to last about two years, but we recommend that customers replace the battery once a year and check the battery electrodes for rust. If the flowmeter will not be used for a long time, the battery should be removed.