GOWENIC Digital Air Pressure Switch User Manual

1. Product Overview

The GOWENIC Digital Air Pressure Switch is a versatile pneumatic vacuum digital controller designed for precise pressure regulation in various industrial and scientific applications. It operates on a DC 12-24V power supply and features a digital display for clear readings. This device is suitable for controlling non-corrosive gases and non-flammable gases within a recommended rated pressure range of 0 to -101kPa.

1.1 Intended Use

This digital pressure switch is intended for use in systems requiring accurate monitoring and control of air pressure or vacuum. Its PNP open collector output allows for integration into various control circuits, making it ideal for automating processes based on pressure thresholds.

1.2 Key Features

• Wide Operating Voltage: Compatible with DC 12-24V power supplies.
• Broad Pressure Range: Recommended rated pressure range of 0 to -101kPa.
• Anti-Vibration Function: Enhances stability and prevents false readings from rapid pressure changes.
• Adjustable Response Time: Allows customization to suit specific application requirements.
• Copy Function: Enables copying set values from a main sensor to up to 10 side sensors simultaneously, with a minimum transmission distance of 4 meters using a dedicated communication line.
• Durable Construction: Made from premium ABS material with an RC 1/8in thread for reliable connections.

Figure 1: GOWENIC Digital Air Pressure Switch with key features highlighted.

2. Safety Information

Please read and understand all safety instructions before installing or operating the GOWENIC Digital Air Pressure Switch. Failure to follow these instructions may result in equipment damage, personal injury, or improper operation.

• Power Supply: Ensure the power supply is within the specified DC 12-24V range. Incorrect voltage can damage the device.
• Fluid Compatibility: Use only with non-corrosive gases and non-flammable gases. Do not use with liquids or corrosive substances.
• Installation: Ensure proper sealing of the RC 1/8in thread to prevent leaks. Avoid overtightening.
• Electrical Connections: All electrical wiring should be performed by qualified personnel in accordance with local electrical codes. Ensure connections are secure and insulated.
• Environmental Conditions: Operate the device within its specified temperature and humidity ranges. Avoid exposure to extreme conditions or direct sunlight.
• Maintenance: Disconnect power before performing any maintenance or cleaning.

3. Package Contents

Verify that all items listed below are present and in good condition upon opening the package:

• 1 x GOWENIC Digital Pressure Switch
• 1 x Connecting Cable
• 1 x User Manual (this document)

Figure 2: Contents of the GOWENIC Digital Air Pressure Switch package.

4. Specifications

The following table details the technical specifications of the GOWENIC Digital Air Pressure Switch:

5. Installation

The GOWENIC Digital Air Pressure Switch is designed for straightforward installation. Follow these steps for proper setup:

1. Mounting: Securely mount the digital pressure switch in the desired location. Ensure it is easily accessible for viewing the display and operating the buttons.
2. Thread Connection: Connect the RC 1/8in thread of the pressure switch to your pneumatic or vacuum system. Use appropriate sealing tape or compound to ensure an airtight connection. Avoid overtightening to prevent damage to the thread or the device.
3. Electrical Connection: Connect the provided connecting cable to the pressure switch and to your DC 12-24V power supply and control circuit. Refer to the wiring diagram (if provided in the physical manual) for correct polarity and output connections. The switch features a PNP open collector output.
4. Power On: Once all connections are secure, apply power to the device. The digital display should illuminate.

Figure 3: Example connection diagram for the digital pressure switch.

Figure 4: Detailed view of the RC 1/8in thread for system connection.

6. Operation

The digital pressure switch allows for precise control and monitoring of pressure levels. The device typically features buttons for setting parameters and navigating menus.

6.1 Basic Operation

Upon powering on, the display will show the current pressure reading. Use the 'Up' and 'Down' buttons (often labeled with arrows) to navigate through settings and adjust values. The 'S' button is typically used to enter menus, confirm selections, or save settings.

• Setting Pressure Thresholds: Access the setting menu to define the desired ON/OFF pressure points. The minimum setting unit is 0.1kPa.
• Adjusting Response Time: The device includes an anti-vibration function and allows adjustment of the response time. This helps prevent false triggers due to rapid, momentary pressure fluctuations. Consult the physical manual for specific steps to adjust this parameter.
• Output Status: The PNP open collector output will activate when the pressure conditions meet the set thresholds. Some models may indicate output status via a change in display color (e.g., red to green).

Figure 5: Digital display and control buttons for setting parameters.

6.2 Copy Function

A unique feature of this digital pressure switch is its copy function, which allows for efficient configuration of multiple units:

• When the pressure switch is powered on, the set values from a main sensor can be copied to up to 10 side sensors simultaneously.
• The minimum transmission distance for this function is 4 meters.
• This copy function requires the use of a dedicated communication line (not included with the standard package, refer to accessories).

7. Troubleshooting

If you encounter issues with your GOWENIC Digital Air Pressure Switch, consider the following troubleshooting steps:

• No Power/Display Off: Check the DC 12-24V power supply connection. Ensure correct polarity and that the power source is active.
• Incorrect Readings: Verify that the pressure switch is properly connected to the system and that there are no leaks at the RC 1/8in thread. Ensure the fluid being measured is compatible (non-corrosive, non-flammable gas).
• Output Not Activating: Confirm that the set pressure thresholds are correctly configured. Check the wiring of the PNP open collector output to your control circuit. Ensure the load current does not exceed 80mA.
• Confusing Controls: The controls for setting ON/OFF points can sometimes be counter-intuitive. If you set the values incorrectly, try reversing the high and low settings. Refer to the detailed instructions in the physical user manual for specific programming sequences.
• Rapid Pressure Changes Causing Maloperation: Adjust the response time setting to a longer duration to filter out rapid, transient pressure fluctuations.

If the problem persists after attempting these steps, contact customer support for further assistance.

8. Maintenance

The GOWENIC Digital Air Pressure Switch requires minimal maintenance to ensure long-term reliable operation:

• Cleaning: Periodically wipe the exterior of the device with a soft, dry cloth. Do not use abrasive cleaners or solvents, as these can damage the housing or display.
• Inspection: Regularly inspect the electrical connections and the pneumatic thread connection for any signs of wear, damage, or leaks.
• Environmental Protection: Ensure the device remains protected from excessive dust, moisture, and extreme temperatures.

9. Warranty and Support

GOWENIC products are manufactured to high-quality standards. For warranty information and customer support, please refer to the documentation included with your purchase or visit the official GOWENIC website. Keep your purchase receipt as proof of purchase for warranty claims.