Pressure Transmitters in Ozone Generators for Stable and Efficient Ozone Production

Ozone generators are widely used across industries including water treatment, food processing, pharmaceuticals, and air purification. They rely on precise control of oxygen or air feed gas and operating pressure to produce a stable and efficient ozone output. One of the key components ensuring this process stability is the pressure transmitter. By accurately monitoring pressure at critical points, pressure transmitters allow for safe, efficient, and optimized ozone production.

2. Role of Pressure in Ozone Generation

Ozone is typically produced via corona discharge or ultraviolet radiation methods, with corona discharge being the most common for industrial use. In a corona discharge ozone generator, dry oxygen or air is passed through a high-voltage discharge gap. The efficiency of ozone generation is highly sensitive to:

• Feed gas pressure

• Gas flow rate

• Moisture content

• Temperature and electrical parameters

Maintaining correct pressure ensures the right gas density in the discharge chamber, which directly affects ozone concentration, production efficiency, and generator lifespan.

3. Application Points for Pressure Transmitters

Pressure transmitters can be installed at several points in an ozone generation system:

1. Oxygen/Air Feed Line

• Ensures stable pressure from compressors or oxygen concentrators.

• Prevents overpressure that may damage the corona cell.

• Maintains optimal conditions for the discharge reaction.

2. Ozone Reaction Chamber (Corona Cell)

• Monitors internal operating pressure to protect against leaks or blockages.

• Detects abnormal pressure changes that may indicate fouling or dielectric failure.

3. Ozone Distribution Network

• Controls pressure delivery to water treatment tanks or distribution pipelines.

• Ensures sufficient pressure for proper mixing with process water or air streams.

4. Technical Requirements for Pressure Transmitters in Ozone Systems

Ozone is a strong oxidizing agent; therefore, pressure transmitters used in ozone generators must meet specific requirements:

• Material Compatibility
  Stainless steel (316L) or special ozone-resistant coatings/PTFE lining to prevent corrosion or oxidation damage.

• High Accuracy & Stability
  Small pressure deviations can affect ozone output efficiency, requiring precise measurements (typically ±0.25% FS or better).

• Sealed and Leak-Proof Design
  To prevent ozone leaks, which are harmful to equipment and personnel.

• Temperature Compensation
  Ozone systems often operate in varying temperature environments; compensated transmitters maintain accuracy across the full temperature range.

• Electrical Output
  Standard industrial outputs (4–20 mA, 0–10 V, RS485/Modbus) for integration into PLCs or SCADA systems.

5. Common Problems and How Pressure Transmitters Solve Them

6. Benefits of Using Advanced Pressure Transmitters

• Improved Ozone Generation Efficiency
  Consistent pressure regulation optimizes ozone output.

• Extended Equipment Lifespan
  Prevents damage from overpressure or vacuum conditions.

• Enhanced Safety
  Reduces risk of ozone leakage or system failure, protecting operators and surrounding environments.

• Remote Monitoring & Automation
  Compatible with modern control systems, enabling smart plant operations and predictive maintenance.

7. Typical Pressure Ranges and Selection

In most ozone generator applications:

• Feed Gas Pressure: 0.1–0.5 MPa

• Corona Cell Operating Pressure: Typically slightly above atmospheric (0.05–0.2 MPa)

• Distribution Lines: Varies depending on downstream use, generally 0.1–0.4 MPa

Selection should consider:

• Pressure range with safety margin

• Process media (dry oxygen, air, ozone)

• Electrical and mechanical compatibility with system controls

  
  

Pressure transmitters play a vital role in maintaining the reliability, efficiency, and safety of ozone generators. By ensuring stable feed gas delivery, monitoring reaction chamber conditions, and safeguarding distribution networks, they form an essential part of any advanced ozone generation system. With proper selection and integration, these instruments contribute to high-quality ozone production, reduced operational costs, and improved plant safety.