PORPHIS PDG-01 Digital Air Flow Valve
Now Featuring an Upgraded Solvent-Resistant Display Lens
PORPHIS PDG-01 Digital Air Flow Valve
Upgraded Solvent-Resistant Display Lens
The display lens has been upgraded for improved resistance to common automotive refinishing solvents, helping reduce clouding and surface damage during normal workshop cleaning and use.
For best results, avoid prolonged soaking and wipe the display promptly after solvent exposure.
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FAQs
Q1: What is the main function of the Digital Air Flow Valve?
A: It precisely controls and displays the air flow rate (e.g., SCFM or L/min) passing through the valve. The digital readout allows realtime monitoring, making it ideal for applications requiring exact flow control, such as pneumatic conveying or air spraying systems.
Q2:How accurate is the flow reading compared to analog flow meters?
A: Typical accuracy is ±2% of full scale, which is significantly better than most analog rotameters (usually ±510%). The digital sensor is temperaturecompensated and less affected by pressure fluctuations.
Q3: Can the Digital Air Flow Valve be used in dirty or oily compressed air lines?
A: It is designed for clean, dry, oilfree air. Particulates or oil residues may damage the internal flow sensor. Always install an upstream filter and coalescer if the air source is not clean.
Q4: How do I set a desired flow rate?
A: Use the digital keypad or knob to input the target flow value. The builtin PID controller automatically adjusts the valve opening to maintain that flow, regardless of downstream pressure changes (within its working range).
Q5:What is the maximum working pressure and temperature?
A: Maximum working pressure is 150 PSI (10 bar), and temperature range is 32140°F (060°C). Exceeding these limits may cause sensor failure or permanent damage to the valve body.
Q6: Does the valve retain its settings after a power loss?
A: Yes, it has nonvolatile memory. The last set flow value and calibration parameters are saved automatically. When power is restored, the valve resumes operation at the previous setting.
Q7:How often does the flow sensor need calibration?
A: Under normal clean air conditions, recalibration is recommended every 12 months. The valve has a onetouch calibration function using a reference flow meter, which takes less than 2 minutes.
Q8: Can I connect the valve to a PLC or data logging system?
A: Yes, the Digital Air Flow Valve comes with analog output (420mA or 010V) and optional RS485 (Modbus RTU) communication. Realtime flow data and valve status can be transmitted to a central control system.
Q9: What should I do if the digital display shows an error code (e.g., E-01)?
A: Refer to the error code table in the user manual. E01 typically indicates no flow sensor signal –check the cable connection. E02 means flow exceeds maximum range. If the problem persists, contact technical support.
Q10: The digital display shows a nonzero value even when no air is connected. How can I reset it to zero?
A: This is normal for some electronic sensors due to ambient drift. To manually zero the display, press and hold the right button for 5 seconds. The display will reset to zero. After this operation, the valve will use the new zero reference for all subsequent flow readings. Perform this only when no air pressure is applied.