Transducer Sender | 1/8NPT Stainless Steel | For Automotive Oil & Fuel

This pressure transducer gives you accurate readings for oil, fuel, air, or water systems. It has a standard 1/8" NPT thread for straightforward installation. The stainless steel body protects it from corrosion. It provides a clean 0.5-4.5V linear output for gauges and aftermarket ECUs. Features and Benefits - Stainless steel pressure sender 1/8 NPT body - Resists corrosion when used with oil, E85 fuel, water, and other common fluids. - Standard 1/8" NPT thread - Screws directly into common ports on engine blocks, fuel rails, and fittings. - Linear 0.5-4.5V output - Provides a consistent signal that's easy for systems like Holley EFI to interpret. - Multiple pressure ranges available - Choose the right scale (e.g., 0-150 psi or 0-1000 psi) for your specific job. Applications - Automotive performance: Use as an oil pressure sender 1/8 NPT or fuel pressure sender 1/8 NPT for a standalone engine management system. - Marine equipment: Functions as a marine oil pressure sender 1/8 NPT that can be tied to a gauge or alarm. - Industrial monitoring: Measures air or water pressure in various automated systems and machinery. Safety & Preparation Before you test your 1/8 NPT Stainless Steel pressure transducer, always prioritise safety. Ensure the system you are connecting it to is de-energised and depressurised. Wear appropriate personal protective equipment, such as safety glasses and gloves. Inspect the transducer for any visible damage to the housing or threads. For applications involving oil or fuel, ensure there are no leaks once installed. Confirm the transducer's thread size is compatible with your connection point to prevent damage or inaccurate readings. Check Excitation Voltage Pressure transducers, like this 1/8 NPT Stainless Steel model, require an excitation voltage to operate. This is the power supply that allows the internal strain gauge to function and convert pressure into an electrical signal. Refer to your system's documentation for the correct voltage range; common values are 5V, 10V, or 24V. Use a multimeter to verify the power supply voltage at the transducer's connection points. Incorrect excitation voltage can damage the transducer or lead to inaccurate readings, so double-check this step carefully. Test Output Signal (Zero Pressure / No Load) To test a pressure transducer, begin by checking its output signal at zero pressure or no load. This establishes a baseline reading. With no pressure applied to the 1/8 NPT Stainless Steel sensor, connect your multimeter to the output terminals. The expected output will vary depending on whether it's a current or voltage output transducer. This initial reading helps confirm the transducer is powered and providing a signal, even if it's just the 'zero' point. For Current Output Transducers (4–20 mA): If your pressure transducer is a current output type, it will typically produce a 4–20 mA signal. With no pressure applied to the 1/8 NPT Stainless Steel transducer, expect a reading of approximately 4 mA. As pressure increases, the current output should proportionally rise, reaching 20 mA at the maximum rated pressure. Use a multimeter set to measure current (mA) in series with the transducer's output. This 4-20 mA signal is often used with logic controllers due to its robustness against electrical noise. For Voltage Output Transducers (0–5V, 0–10V, or mV): For voltage output pressure transducers, the output signal will typically be 0-5V, 0-10V, or in millivolts (mV). With no pressure applied to the 1/8 NPT Stainless Steel transducer, expect a reading of approximately 0V (or a small offset voltage if specified by the manufacturer). As pressure is applied, the voltage output will increase proportionally. Use a multimeter set to measure DC voltage (V or mV) in parallel with the transducer's output. This type of signal is commonly used for direct connection to display gauges or data acquisition systems.