Sensor | G1/4 Stainless Steel Body | 4-20mA for Oil Fuel Water

This sensor converts physical pressure into a 4-20mA electrical signal. It’s a complete pressure transmitter, with a transducer and signal conditioner built in. The stainless steel body and G1/4 port work well for monitoring water, oil, fuel, or gas. Features and Benefits - Stainless steel 304 housing - It resists corrosion when used with different fluids and gases. - 4-20mA current output - This provides a stable, industry-standard signal for long-distance communication to PLCs or displays. - Wide pressure range options - You can select from 0-60MPa (0-600 bar) to match your system's needs. - Ceramic sensor core - It offers good accuracy and long-term stability for consistent readings. Applications - Hydraulic systems to monitor fluid pressure and prevent overloads. - Air compressor tanks to manage operating pressure and cut-off cycles. - Water management systems for tracking pump output and pipeline pressure. Safety & Preparation Before testing your pressure transducer, ensure a safe working environment. Disconnect power to any existing systems the transducer might be connected to. Wear appropriate personal protective equipment, such as safety glasses. Have your multimeter ready and set to the correct measurement range for voltage or current. Ensure all connections are secure and free from damage. This transducer is designed for use with oil, fuel, and water, so be mindful of any residual liquids in your system. Check Excitation Voltage The transducer requires a stable supply voltage to operate correctly. This Sensor has a specified supply voltage range of 12-36 V. Using your multimeter, confirm that the power supply you intend to use provides a voltage within this range. Connect the positive lead of your multimeter to the positive terminal of your power supply and the negative lead to the negative terminal. An incorrect excitation voltage can lead to inaccurate readings or damage the transducer. Test Output Signal (Zero Pressure / No Load) To test how the pressure transducer works, you first need to establish a baseline. Connect the transducer to its power supply (12-36 V). With no pressure applied to the G1/4 pressure port, measure the output signal. This "zero pressure" reading is crucial for calibration and understanding the transducer's behaviour. For this particular transducer, you would be looking for a 4 mA output at zero pressure. For Current Output Transducers (4–20 mA): This transducer outputs a 4-20 mA signal, proportional to the pressure applied. To test it, connect your multimeter in series with the transducer's output and the load (e.g., a logic controller or PLC input). Set your multimeter to measure DC current. With no pressure, expect to read approximately 4 mA. As pressure increases towards 60 MPa, the current output should proportionally increase towards 20 mA. Ensure your multimeter can handle the maximum current. For Voltage Output Transducers (0-5V, 0-10V, or mV): Although this specific transducer has a 4-20 mA current output, it's useful to understand how voltage output transducers work. For a voltage output transducer, you would connect your multimeter in parallel across the output terminals. Set your multimeter to measure DC voltage. A typical 0-5V or 0-10V transducer would output 0V at zero pressure and increase proportionally to 5V or 10V respectively as pressure reaches its maximum range. Millivolt (mV) output transducers often require amplification.