Control solutions for future-proof gas odorization
Monitoring and control of odor concentration.
Gas odorization is a safety-critical function in gas distribution and places the highest demands on reliability, ease of operation, and long-term viability. With the OCM, LEWA offers a modern odorization control system based on an open, modular automation platform.
The OCM enables precise, flow-dependent control of the metering pump and ensures safe, reliable, and reproducible odorant dosing. Its graphical process visualization provides maximum transparency and intuitive operation. As a future-proof solution, the OCM meets today's requirements while offering the flexibility to adapt to a wide range of odorization systems.
Advantages
The OCM combines modular flexibility with modern visualization technology to deliver safe, efficient, and future-proof odorization control.
- High operational reliability through continuous monitoring and precise dosing
- Intuitive operation with minimal training requirements
- Reduced engineering effort through integrated control of multiple odorization systems
- Easy maintenance thanks to the modular design and straightforward module replacement
- Future-proof architecture with flexible expansion options for evolving requirements
Flexible deployment
The OCM is suitable for a wide range of gas odorization applications:
- Gas transfer and pressure regulating stations
- Gas distribution networks
- Redundant odorization systems
- Retrofit of existing installations
- New installations with advanced automation requirements
Future-proof & standardized
- Siemens-based PLC and HMI technology
- Standardized communication interfaces (e.g., Modbus, PROFINET)
- Scalable architecture with long-term availability and support
Standards & safety
- Compliant with CE, EMC, RoHS, and ATEX requirements
- Meets relevant DVGW standards and regulations
- Prepared for future cybersecurity requirements, including the Cyber Resilience Act (CRA)
Modular design of the odor control unit
The OCM is a scalable, modular control system that can be flexibly adapted to a wide range of plant concepts and application requirements. Its clear modular design enables easy expansion, simplified maintenance, and seamless integration into existing systems.
Key modules at a glance
- PSM – Power Supply Module
Generation of the internal 24 VDC control voltage from either 24 VDC or 230 VAC, including circuit protection and an ON/OFF switch. - SPM – Solenoid Pump Module
Control of up to two solenoid-driven pumps, including integrated protection (special versions available). - TTM – Thermistor Tripping Module
Monitoring of the motor protection thermistors (PTC sensors) of the solenoid-driven pump (e.g., MLM 40). - REM – Relay Module
Potential-free signal exchange and power relays for the control of solenoid valves. - CTM – Control / I-O Module
Central PLC for processing all input and output signals, including system visualization via a 4.3" operator panel. - EX-Module (EX1 / EX2)
Integration of intrinsically safe instrumentation, such as flow meters, level probes, and proximity sensors.
Integrated Visualization (HMI)
The OCM features a modern, fully integrated visualization system that provides maximum transparency and ease of operation:
- Intuitive user interface
Clearly structured navigation and operation on a color touchscreen display. - Graphical process flow diagram
Clear overview of the entire system with status indication and alarm messaging. - Easy parameter configuration
Guided dialog-based configuration reduces the risk of errors and accelerates commissioning, operation, and service activities. - Plain-text messages
Clear and easy-to-understand messages instead of cryptic error codes. - Multilingual support & user access management
Flexible adaptation to international requirements and secure access control through configurable user rights and permission levels. - Target/actual value comparison
Continuous monitoring of relevant process parameters with automatic control and adjustment to ensure precise and reliable odorant dosing.
Industries
Gas Odorization with LEWA Pumps and Metering Packages
Natural gas, oxygen, and nitrogen are odorless but potentially dangerous. This is why these gases are "odorized" with as strong a smelling substance as possible. For more than 40 years, LEWA has been developing systems for the odorization of gases such as natural gases, biogases, and liquefied gases. This process is enormously important, so the odorizing system has to operate precisely and reliably.
More DetailsDownloads
LEWA Dosier-und Mischanlagen - komplette Lösungen aus einer Hand. (DE)
In vielen verfahrenstechnischen Produktionsanlagen spielt das Dosieren und Mischen von Flüssigkeiten als Verfahrensschritt eine wichtige Rolle, der für die Qualität des Endproduktes mit verantwortlich ist.
4 MB
| pdf |
05.08.2026
LEWA metering and mixing systems-complete solutions from a single source. (EN)
In many manufacturing plants, the metering and mixing of liquids plays an important role as a
procedural step that ensures the quality of the end product.
4 MB
| pdf |
05.08.2026
LEWA Odorizing systems for natural gas, biogas and liquefied petroleum gas. (EN)
For decades, customers from all over the world have placed their trust in LEWA systems
for odorizing gas. Our portfolio ranges from systems for micro flow metering, such as biogas plants, to
gas pressure regulating stations.
4 MB
| pdf |
05.08.2026
LEWA Odoriersysteme für Erd, Bio-und Flüssiggas. (DE)
Seit Jahrzehnten vertrauen Kunden aus der ganzen Welt bei der Odorierung von Gas auf Systeme von LEWA. Unser Portfolio reicht von Anlagen zur Kleinstmengendosierung,
wie z. B. bei Biogasanlagen, bis hin zu Gasdruckregelstationen.
4 MB
| pdf |
05.08.2026
Injection nozzle for odorizing systems from Böhmer (EN)
Injection nozzles for pipelines or ball valves in natural gas odorization
951 KB
| pdf |
17.05.2022
Impfdüse für Odoriersysteme von Böhmer (DE)
Impfdüsen für Rohrleitungen oder Kugelhähne in der Erdgasodorierung
1 MB
| pdf |
17.05.2022
LEWA OCM - Odoriersteuerung (DE)
OCM – Die neue Generation der LEWA Odoriersteuerung.
Modular. Sicher. Zukunftsorientiert.
813 KB
| pdf |
06.08.2026
LEWA OCM - Odorization Control (EN)
OCM – The new generation of LEWA odorization control.
Modular. Reliable. Future-ready.
824 KB
| pdf |
06.08.2026
