Diesel Flow Meter | Digital LCD Turbine | K24 Fuel & Methanol

Keep exact records of fluid usage with this inline diesel flow meter. Built with a stainless steel body and internal turbine, it handles diesel, methanol, and water with plus-or-minus one percent accuracy. The clear LCD screen shows both real-time flow rates and resettable batch totals. Features and Benefits - Solid stainless steel casing - Resists corrosion from harsh chemicals like methanol and withstands everyday wear better than lightweight aluminum meters. - Dual-line LCD readout - Shows your current batch total alongside cumulative lifetime volume with simple on-screen button calibration. - Threaded one-inch NPT ports - Screw directly onto standard fuel transfer nozzles, hose ends, or stationary pump discharge lines. - Internal lithium battery power - Runs for thousands of hours without external wiring and preserves your calibrated settings through cell replacements. Applications - Tracking dispensed fuel volume directly at the nozzle on mobile 12-volt refueling trucks. - Metering methanol, water, and industrial liquid transfers through plant and shop piping systems. - Monitoring batch fuel usage on farm storage tanks to manage equipment operating expenses accurately. Safety & Materials The body uses aluminium alloy with internal stainless steel components to balance structural strength and corrosion resistance. This construction allows compatibility with diesel, water, liquid chemicals, and methanol. Always verify chemical compatibility with internal seals before installation. Working with liquid fuels carries ignition risks, so pipe fittings must be thread-sealed correctly to prevent vapour leaks. When pairing with dispensing systems, understand how does a fuel nozzle shut off: it uses a venturi mechanism in the tip that closes the main poppet when fuel covers the air hole. Ensure your pipe run accommodates backpressure when this shut-off activates. Core Parts Needed: To build an automated transfer rig or understand how to make a fuel flow meter setup, you will need the following core parts: - K24 turbine flow meter with digital LCD - Flexible delivery hose rated for fuel transfers - Automatic shut-off delivery nozzle - In-line filter housing to protect internal moving parts - Microcontroller board for remote data logging - External power supply for external electronics - Shielded signal cabling for pickup sensor wiring - BSP threaded pipe fittings and fuel-resistant PTFE tape Hardware Connection & Schematic Understanding how fuel flow meter works relies on the internal turbine sensor. As fluid passes through the aluminium alloy housing, it rotates the internal turbine, and a pickup sensor registers the movement. For external monitoring, connect the ground to the common supply rail and tie the signal line to a digital interrupt pin. Power your logic controller using a stable 5V or 12V supply. Fit a 10k ohm pull-up resistor between the signal line and the 5V logic rail if reading open-collector pulses directly. Keep data cables away from high-current motor leads to prevent electrical interference. Calibration & Math Turbine meters measure velocity rather than mass, meaning fluid viscosity alters output. Each revolution corresponds to a finite volume displaced through the chamber. To calculate the flow rate, count the pulses generated over a set time window. The fundamental formula is: Flow Rate in litres per minute equals Pulse Frequency divided by the K-factor. Determine your calibration factor by dispensing a known volume, such as twenty litres into an accurate measure. Divide the recorded pulse count by the actual dispensed volume. Update your calculation multiplier to match the specific fluid, whether pumping thick diesel or thinner liquid chemicals. Arduino Code Example Use this basic logic to count pulses from the flow sensor: volatile unsigned long pulseCount = 0; const byte sensorPin = 2; float kFactor = 4.5; 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 flowRate = (pulseCount / kFactor); Serial.println(flowRate); pulseCount = 0; lastCheck = millis(); attachInterrupt(digitalPinToInterrupt(sensorPin), countPulse, FALLING); } }