Flow Meter K24 Digital | 1-Inch Turbine LCD Gauge | Fuel Liquid Monitor

This inline diesel flow meter accurately tracks liquid volume on mobile transfer tanks and stationary dispensing stations. Built with a 1-inch NPT threaded connection, it monitors diesel, kerosene, and water. A clear LCD screen displays both real-time flow rates and running totals for precise inventory control on job sites. Features and Benefits - K24 electronic turbine flow sensor - Measures flow rates between 10 and 120 liters per minute with an accuracy rating within plus or minus 1 percent. - Dual-line LCD display panel - Shows an instant resettable batch readout alongside a non-resettable lifetime total for clear records. - Four-way rotatable display housing - Lets you mount the meter horizontally or vertically while keeping the digital readout facing upright. - Internal push-button field calibration - Lets you adjust the meter factor quickly to match different fluid viscosities and pressure setups. Applications - Connecting inline with electric 12-volt fuel transfer pumps for tracking farm tractor refills. - Monitoring diesel and kerosene dispensing lines mounted on pickup truck utility service bodies. - Measuring transferred water and neutral light chemicals in commercial maintenance shops and groundskeeping setups. Safety & Materials This K24 unit is built as a diesel flowm suitable for monitoring diesel, oil, chemicals, and water. When setting up pipework, ensure all mating threads, gaskets, and seals match the chemical properties of your fluid to prevent leaks under line pressure. Wear eye protection and nitrile gloves when handling fuel lines or industrial chemicals. Check that your delivery pipework uses compatible materials, such as stainless steel or fuel-rated polymers, to prevent internal corrosion. Never use an unrated digital LCD unit with flammable fuels like petrol, and isolate all nearby power sources before cracking open joints for maintenance or inspection. Core Parts Needed: - K24 digital LCD meter assembly with integrated turbine sensor - 1-inch BSP or NPT male threaded pipe adaptors to match your line - Fuel-resistant PTFE thread sealing tape or liquid anaerobic thread sealant - Fuel delivery hose rated for diesel or oil transfer - Standard automatic shut-off delivery nozzle - Secondary pulse pickup sensor lead if tapping into remote telemetry - Microcontroller board running on 5V or 12V DC power for logging systems - 10k ohm pull-up resistor for signal wiring Hardware Connection & Schematic Thread the 1-inch turbine body directly into your delivery line, positioning it upstream of the delivery nozzle. To understand how does a fuel nozzle shut off, the nozzle uses an internal venturi tube near the spout tip; when liquid covers this port, the vacuum drops and trips the mechanical latch, so ensure your meter does not restrict the back-pressure needed for that mechanism. If connecting to a microcontroller to learn how to make a fuel flow meter display, tap the meter reed switch or pickup sensor between a digital input pin and ground, adding a pull-up resistor to the 5V rail. Calibration & Math Understanding how fuel flow meter works relies on measuring fluid velocity past an internal turbine. As liquid pushes the rotor blades, the turbine sensor generates pulses proportional to the displaced volume. To calibrate your setup, dispense a known volume into an accurate 20-litre test measure at standard delivery speed. Count the total output pulses from the flow sensor. Divide the pulse count by the dispensed litres to establish your specific K-factor. Enter this value into your software to convert raw signal counts into precise litres per minute, recalibrating whenever fluid viscosity changes between heavy oil and thin diesel. Arduino Code Example volatile unsigned long pulseCount = 0; const byte sensorPin = 2; float kFactor = 45.0; void countPulse() { pulseCount++; } void setup() { Serial.begin(9600); pinMode(sensorPin, INPUTPULLUP); attachInterrupt(digitalPinToInterrupt(sensorPin), countPulse, FALLING); } void loop() { static unsigned long lastCheck = 0; if (millis() - lastCheck >= 1000) { detachInterrupt(digitalPinToInterrupt(sensorPin)); float litres = pulseCount / kFactor; Serial.print("Volume: "); Serial.print(litres); Serial.println(" L"); pulseCount = 0; lastCheck = millis(); attachInterrupt(digitalPinToInterrupt(sensorPin), countPulse, FALLING); } }