Reliable Overpressure Prevention:

Overpressuring a pipeline or vessel containing flammable or hazardous materials can result in loss of containment, equipment damage, fire, or other serious consequences. Diamond-SIS® provides an independent, highly reliable way to detect abnormal pressure and take action before the equipment reaches an unsafe condition.
Diamond-SIS® is a cyberproof, safety-certified single-loop controller, also commonly called a safety trip amplifier or analog safety relay. Its dedicated electromechanical design provides reliable protection without the complexity of a PLC-based safety system. With proven performance and long service life, Diamond-SIS® helps keep hazardous materials contained within the process.
For individual vessels, pipelines, and other pressure systems, Diamond-SIS® can provide a cost-effective instrumented Protection Layer that acts before a traditional pressure relief device is required to operate. The system can initiate actions such as closing isolation valves, stopping pumps or compressors, or shutting down equipment to prevent further pressurization.
Diamond-SIS® provides a practical solution for high-integrity pressure protection, low-integrity Protection Layers, and safety instrumented systems (SIS), particularly where a simple, independent protective system is preferred over a more complex PLC-based solution.
Features and Benefits:
- API 521 Compliant
- ASME Section VIII, Division 1 and 2 Compliant
- IEC 61508 SIL 3 Certified
- Class I Division 2 Rated
- Independent of process control system
- Cyber-proof via air gapped and non-programmable countermeasures
- Low capital cost with easy installation
- Local panel for alarms and operator controls
- IEC 61511 documents and maintenance instructions
- Annual maintenance packages for long-term support


