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Detecting Chemical Leaks: A Guide to Sensors
Detecting chemical leaks is critical for ensuring safety, protecting the environment, and avoiding costly damage. Advanced sensors like the OSP Sensor provide a reliable, versatile solution for identifying chemical leaks across various applications. This guide will explain how these sensors work, their unique features, and the benefits they bring to your leak detection system.
Detecting chemical leaks is becoming increasingly vital in today’s industries. Effective methods of detecting chemical leaks can prevent accidents and ensure compliance with safety standards.

Understanding the significance of detecting chemical leaks can lead to better safety practices and environmental protection.
Prevention is key, and detecting chemical leaks promptly can save lives and reduce the impact on the environment.
The Importance of Detecting Chemical Leaks
Utilising advanced technology for detecting chemical leaks enhances the reliability of your safety systems.
Chemical leaks can lead to hazardous situations, including environmental contamination, health risks, and equipment damage. Quick and accurate detection is essential for mitigating these risks, minimizing downtime, and maintaining compliance with safety regulations.
Meet the OSP Sensor: A Standalone Solution for Leak Detection
The OSP Sensor is a versatile device that can be integrated seamlessly into your existing alarm system or Building Management System (BMS). Alternatively, it can pair with the ODS2-3 Oil Leak Alarm Panel, which triggers an immediate alert upon detecting a leak.

Key Features of the OSP Sensor:
- Wide Detection Range: Capable of detecting various liquids, including water, fuel, acid, oil, and diesel.
- Immediate Response: Upon contact with liquid, the sensor activates an internal relay to signal alarms, BMS systems, or even SMS alerts.
- High-Quality Materials: Constructed with an advanced optical sensor made from Udel® Polysulfone (PSU), a high-performance thermoplastic.
What Makes Udel® Polysulfone (PSU) Ideal for Leak Detection Sensors?
The OSP Sensor’s durability and performance are largely due to its use of Udel® PSU, a thermoplastic with outstanding properties:
1. Chemical Resistance
Udel® PSU resists most chemicals, including non-oxidizing acids, bases, aliphatic hydrocarbons, and alcohols. It performs well under prolonged exposure to liquids like:
- Water
- Diesel fuel
- Hydraulic oil
- Acids (e.g., sulfuric and acetic acid)
Udel® Polysulfone (PSU) is recognized for its robust chemical resistance across various substances. Here’s a detailed look at its effectiveness against acids, antifreeze, and ethanol:
Resistance to Acids:
Udel® PSU exhibits excellent resistance to mineral acids. It maintains its integrity when exposed to acidic environments, making it suitable for applications involving such conditions. Eldon James
Resistance to Antifreeze:
Antifreeze solutions typically contain glycols, such as ethylene glycol or propylene glycol. While specific data on Udel® PSU’s resistance to antifreeze is limited, its general chemical resistance profile suggests good compatibility with glycols. However, it’s advisable to conduct specific testing to confirm suitability for prolonged exposure.
Resistance to Ethanol:
Udel® PSU demonstrates excellent resistance to ethanol. Immersion tests have shown minimal weight change and no significant degradation after seven days at room temperature, indicating its suitability for applications involving ethanol exposure. Solvay
In summary, Udel® Polysulfone offers strong resistance to acids and ethanol, and is likely compatible with antifreeze solutions. Nonetheless, for critical applications, it’s recommended to perform specific compatibility tests to ensure long-term material performance.This makes it suitable for detecting leaks in diverse industrial and environmental conditions.
2. Thermal Stability and Strength
With a heat deflection temperature of 174°C (345°F) and excellent toughness, Udel® PSU maintains its integrity even in harsh environments. Its high tensile and compressive strength ensure long-term reliability.
3. Safe for Critical Applications
Udel® PSU complies with stringent standards for safety and environmental health:
- ANSI/NSF 61: Approved for drinking water system components.
- FDA Compliance: Suitable for food contact.
- UL-94 Flammability Standard: Offers resistance to combustion.
How the OSP Sensor Works
The OSP Sensor is designed for precision and efficiency:
- Liquid Detection: When liquid contacts the sensor’s optical element, it activates an internal relay.
- Signal Transmission: The relay sends a signal to connected alarm systems, BMS platforms, or SMS messaging systems.
- Rapid Alerts: If used with the ODS2-3 Oil Leak Alarm Panel, it triggers an immediate alarm, ensuring timely action.
This simplicity, combined with advanced material science, makes the OSP Sensor an indispensable tool for detecting chemical leaks.
The ATEX Oil Leak Sensor: For Hazardous Environments
For environments with potentially explosive atmospheres, the AOSP Sensor is the preferred choice. This ATEX-rated sensor adheres to stringent safety standards, making it intrinsically safe.

Innovation in detecting chemical leaks can lead to improved efficiency and safety in various industries.
Key Features of the AOSP Sensor:
- Certified for use in ATEX Zones 0, 1, and 2.
- Integrates a NAMUR sensor, which operates with intrinsically safe circuitry to prevent ignition risks.
- Requires an intrinsic barrier when connected to alarm systems, ensuring maximum safety in hazardous areas.
Explore our ATEX Oil Leak Sensor to learn more.
Understanding ATEX Zones:
- Zone 2: Low risk of explosive atmospheres during normal operations.
- Zone 1: Occasional presence of explosive atmospheres.
- Zone 0: Continuous or frequent presence of explosive atmospheres.
When to Choose the AOSP Sensor:
- Ideal for hazardous environments such as petrochemical plants, offshore platforms, and flour mills.
- Required in locations where compliance with ATEX regulations is mandatory.
Comparing OSP and AOSP Sensors
Feature | OSP Sensor | AOSP Sensor |
---|---|---|
Primary Application | Standard environments | Explosive environments |
Compliance | General safety standards | ATEX-certified for Zones 0, 1, 2 |
Liquids Detected | Water, fuel, acid, oil, diesel | Oil and petrol in hazardous areas |
Integration | Alarm systems, BMS, SMS alerts | Requires intrinsic barrier for alarm connection |
Conclusion: Choosing the Right Sensor
Both the OSP and AOSP Sensors are essential tools in the ongoing fight against unsafe chemical leaks. Selecting between the OSP Sensor and the AOSP Sensor depends on your operational environment. For general applications, the OSP Sensor offers versatility and reliability. However, in hazardous areas where compliance with ATEX standards is crucial, the AOSP Sensor provides the necessary safety features. Prioritising methods for detecting chemical leaks is crucial for any business aiming to uphold safety and regulatory standards.
Contact CMR Electrical for more information on detecting chemical leaks and enhancing your safety protocols. Additional reading can be found in our ATEX Oil Leak Sensor blog.