G1/4 Pressure Sensor | 0.5-4.5V Output Signal | 24V DC Supply Gauge

This small 4-20mA pressure sensor gives accurate gauge pressure readings for factory equipment. It turns pressure into a standard current signal for your control system. With a G1/4' thread and stainless steel body, it's easy to put into water pumps and air lines. Features and Benefits - Standard 4-20mA signal - This output is what the industry uses for sending data reliably to PLCs, even over long distances. - Resists corrosion - The stainless steel build helps it last in wet or chemical environments. - G1/4' thread size - This common fitting makes it simple to screw into many existing systems and machines. - Available in specific ranges - You can get a 1 bar sensor for low-pressure tasks or choose higher ranges for other work. Applications - Water Pump Control - Watch and adjust pressure to keep water flowing steadily and protect the pump. - Pneumatic Systems - Measure air pressure in cylinders and tools for automated manufacturing. - HVAC Equipment - Keep track of pressure in heating and cooling systems to make sure they are working right. Safety & Preparation Before installing or testing any pressure sensor, ensure the system is depressurised and isolated from power sources. Always wear appropriate personal protective equipment, such as safety glasses. Pressure transducers, like this G1/4 Pressure Sensor, convert physical pressure into an electrical signal. Understanding how these devices work is crucial for safe and accurate operation. This particular pressure sensor operates with a 24V DC supply. Always confirm the pressure range of the sensor, which for this product includes options such as 0.1 bar, 10 bar, and 145 psi, is suitable for your application. Check Excitation Voltage To test your pressure transducer effectively, first verify the excitation voltage. For this G1/4 Pressure Sensor, the specified supply voltage is 24V. Incorrect voltage can damage the transducer or lead to inaccurate readings. Use a multimeter to confirm that the power supply connected to the transducer delivers the correct 24V DC. A stable and accurate supply voltage is critical for the transducer to function as intended and provide reliable output signals. This step helps ensure the pressure transducer works correctly from the outset. Test Output Signal (Zero Pressure / No Load) After confirming the excitation voltage, the next step in testing your pressure transducer is to check its output signal at zero pressure or with no load. This helps determine the baseline functionality of the device. With no pressure applied to the G1/4 Pressure Sensor, measure the output signal using a multimeter. This product offers multiple output signals, including 4-20mA and 0.5-4.5V. Understanding how pressure transducers work involves verifying their zero-point output before they are subjected to pressure, akin to checking a tire gauge before use. For Current Output Transducers (4–20 mA): For pressure transducers with a 4-20 mA current output, such as this G1/4 Pressure Sensor, connect an ammeter in series with the output loop. With no pressure applied, the transducer should ideally output 4 mA. As pressure increases, the current output will rise proportionally, reaching 20 mA at the maximum specified pressure range (e.g., 10 bar, 100 bar). This current output is often preferred for long cable runs and industrial control systems, as it is less susceptible to electrical noise than voltage signals, making it suitable for connection to a logic controller. For Voltage Output Transducers (0–5V, 0–10V, or mV): When testing voltage output transducers, like the 0.5-4.5V output option on this G1/4 Pressure Sensor, connect a voltmeter across the output terminals. With no pressure applied, the transducer should provide its minimum voltage output, which for this product is 0.5V. As pressure increases across its range (e.g., 0.1 bar to 150 bar options), the voltage output will increase proportionally, reaching 4.5V at the maximum pressure. This type of output is common for direct input to data acquisition systems or control circuits.