This industrial sensor works with water, oil, and gas. It has several output choices: 4-20mA, 0-5V, 0-10V, and RS485. This lets you connect it to almost any control system. Its design handles both positive and vacuum pressures. Features and Benefits
- Multiple output signals - Pick the right output for your controller or data logger. Options include 4-20mA, 0-5V/10V, or RS485.
- Works with many media - This sensor can be used in many different industrial processes.
- Ceramic pressure core - This part gives steady readings. It also resists wear well.
- Measures vacuum pressure - It works for vacuum pressure or regular positive pressure. This means you need fewer different sensors. Applications
- Hydraulic Systems - Watch fluid pressure in hydraulic power packs and machines. This helps ensure safe operation.
- Industrial Gas Lines - Use it to check pressure in supply lines. It works for air and other non-corrosive gases.
- Process Control - The RS485 output makes this a good digital sensor. It monitors water, oil, and gas in automated systems.
Safety & Preparation
Before attempting any installation or testing of your new pressure transducer, ensure all necessary safety precautions are in place. This includes isolating power sources and wearing appropriate personal protective equipment. Familiarise yourself with the product's specifications, particularly the 24V DC power supply requirement. A pressure transducer converts physical pressure into an electrical signal, and understanding its operational principles is key to proper setup and troubleshooting.
Check Excitation Voltage
The pressure transducer requires a 24V DC power supply for operation. Before connecting the transducer, verify that your power source provides the correct excitation voltage. An incorrect voltage can damage the transducer or lead to inaccurate readings. Use a multimeter to confirm the output of your power supply. This crucial step ensures the transducer receives the stable and correct power it needs to function accurately.
Test Output Signal (Zero Pressure / No Load)
To test the pressure transducer's functionality, begin by verifying its output signal under zero pressure or no load conditions. This establishes a baseline for its performance. The transducer outputs signals in various formats, including 4-20mA, 0-5V, 0-10V, or RS485. Testing without pressure allows you to confirm the transducer is powered correctly and that its signal generation is operational before it is subjected to actual pressure.
For Current Output Transducers (4–20 mA):
For transducers with a 4-20mA output, connect a multimeter in series with the transducer's current output and the power supply return. With no pressure applied to the sensor, expect to read approximately 4mA. This "zero" reading is fundamental to how pressure transducers work, representing the lowest point in its measurement range. As pressure is applied, the current should increase proportionally up to 20mA.
For Voltage Output Transducers (0–5V, 0–10V, or mV):
If your pressure transducer has a 0-5V, 0-10V, or mV output, connect a multimeter in parallel across the transducer’s output terminals. With no pressure applied, the reading should be close to 0V (or a specified mV offset for some models). This initial reading confirms the transducer is powered and ready to measure. As pressure increases, the voltage output will rise proportionally up to its maximum, such as 5V or 10V, providing a clear indication of the detected pressure.
Power Supply: 24V DC. Medium: Water, Oil, Gas. Output Signal: 4-20mA, 0-5V, 0-10V, RS485. Pressure Type: Positive, Negative, Vacuum, Gauge. Product Type: Pressure Transmitter. Housing Material: Stainless Steel 304. Power Supply: 24V DC. Output Signal: 4-20mA, 0-5V, 0-10V, RS485. Operating Temperature: -20°C to 85°C. Accuracy: ±0.5% FS. Electrical Connection: Hirschmann connector, Cable gland. Measured Medium: Water, Oil, Gas. Pressure Type: Positive, Negative, Vacuum, Gauge. Process Connection: G1/4, NPT1/4 (configurable). Product Type: Pressure Transmitter. Sowakam Model: SW-P30. Zero Drift: ±0.03% FS/°C. Q: What are the different output signals I can get with this pressure sensor? A: This model is very flexible when it comes to outputs. You can order it with a 4-20mA current loop, a 0-5V or 0-10V voltage signal, or an RS485 digital output for communicating with more complex systems.. Q: Can this sensor measure both vacuum and positive pressure? A: Yes, it's available in configurations that can measure negative pressure (vacuum), positive gauge pressure, or a compound range that includes both. It all depends on the specific range you select when ordering.. Q: What materials are the wetted parts made from? A: The parts that come into contact with the media, like the diaphragm and the port, are made from stainless steel. This makes it compatible with water, oil, gas, and other media that don't cause corrosion.. Q: Does this pressure transducer come with a warranty? A: Yes, it does. Every unit is covered by a 12-month warranty against any defects in workmanship or materials from the factory.. Q: Why is having so many output options a major benefit? A: The variety of outputs means this one model can connect to almost any controller, data logger, or PLC you have. You don't have to hunt for different sensors to match the specific input needs of your equipment..