Transducer | 5V 1/8 NPT Sender | For Oil, Fuel, Air & Water

This NPT pressure transducer measures pressure for oil, fuel, air, or water. It's a 5V pressure transducer made from stainless steel. It outputs a linear voltage signal. With a standard 1/8 NPT fitting, it installs easily in many automotive or industrial systems. Features and Benefits - 316 stainless steel body and sensor - This resists corrosion when used with common fluids like oil, gasoline, and water. - Multiple pressure ranges available (30-1000 PSI) - You can select the correct pressure sender for your application's needs. - 0.5V to 4.5V linear voltage output - This gives a simple, predictable signal for data loggers, gauges, or engine control units. - ±2% full-scale accuracy - This delivers readings you can use for monitoring critical system pressures. Applications - Monitoring engine oil or fuel pressure in an automotive project. - Measuring air pressure in pneumatic systems or onboard air compressors. - Checking water pressure in custom irrigation setups or pump systems. Safety & Preparation Before testing your pressure transducer, ensure all systems are de-energised and depressurised. Wear appropriate personal protective equipment, including safety glasses. Verify the transducer's compatibility with the media you intend to measure; this transducer is designed for oil, fuel, air, and water. Ensure the 1/8 NPT thread size matches your connection point to prevent leaks and damage. Handle the transducer carefully to avoid impact, which could affect its piezoelectric sensor. Keep the work area clean and free from obstructions. Check Excitation Voltage The transducer requires a stable 5V input voltage for accurate operation. Before connecting, use a multimeter to verify that your power supply delivers precisely 5V. Incorrect voltage can damage the transducer or lead to inaccurate readings. For other transducers, typical excitation voltages might be 12V or 24V, but this specific unit requires 5V. Always double-check the voltage rating on your specific pressure transducer before applying power to prevent irreversible damage to the internal electronics. Test Output Signal (Zero Pressure / No Load) With the transducer connected to its 5V input voltage supply but not yet exposed to any pressure, measure its output signal. This baseline reading represents the transducer's output at zero pressure. For this voltage output transducer, you should expect a low voltage reading, often close to 0V, when no pressure is applied. This initial test helps confirm the transducer is powered correctly and that its internal piezoelectric sensor is functioning before any pressure is introduced. For Current Output Transducers (4–20 mA): (This section is not applicable to the specified product as it has a voltage output. However, for a 4-20 mA current output transducer, you would connect a multimeter in series with the output loop to measure the current. At zero pressure, you should typically read 4 mA. As pressure increases, the current would proportionally rise, up to 20 mA at the maximum rated pressure. This type of signal is often preferred for long cable runs due to its immunity to electrical noise and the ability to detect a broken wire if the current drops below 4 mA.) For Voltage Output Transducers (0–5V, 0–10V, or mV): This transducer provides a voltage signal. To test, connect a multimeter in parallel with the output terminals. At zero pressure, with the 5V input voltage applied, you should observe a specific low voltage output. As pressure is applied to the transducer (within its 30-1000 PSI range), the voltage output will increase proportionally. For example, a 0-5V output transducer would typically output 0V at 0 PSI and 5V at its maximum rated pressure, or a scaled equivalent if the range starts above 0 PSI.