Differential pressure sensor Wilo-DDG 20 (4-20mA) 2G VP. 2136456

Differential pressure sensor for precise installation monitoring

The Wilo-DDG 20 differential pressure sensor with 4-20mA output is a reliable device that converts the differential pressure value into an electrical signal. This allows for effective monitoring and regulation of pump operation and entire heating, cooling or water systems. This is particularly important in applications where precise adjustment of the pump performance to the current demand is crucial for optimizing energy consumption and ensuring comfort.

Construction and application

The DDG 20 sensor is used to monitor the differential pressure generated by pumps in pipelines. The 4-20mA signal enables easy integration with control systems, WILO controllers or other building automation devices. The connection of the sensor to the measuring points is made using copper tubes with a diameter of 6 mm, terminated with threaded connections with a cutting ring. This makes installation simple and quick.

Advantages and characteristic features

• 4-20mA signal: Standard output signal ensures compatibility with most control and automation systems.
• Wide measurement range: Model DDG 20 measures differential pressure in the range of 0 to 2.0 bar, making it a universal solution for various applications.
• Durable construction: IP55 protection class guarantees resistance to dust and water jets, allowing operation in harsh environmental conditions.
• Suitable for various media: The sensor is designed to work with heating water, water with sticky components and cooling water – however, media containing oil should be avoided.
• Temperature range: The processed liquid can have a temperature of -20°C to +80°C, and the ambient temperature from 0°C to +70°C.
• Overpressure protection: Static overpressure up to 21 bar and dynamic up to 2.5 x pmax ensure safe operation of the device.

Installation and parameters

The sensor is powered by 24V DC. Thanks to the included mounting elements, installation is simple and convenient. The device is not a spare or replacement part – it is a self-contained component of the measuring system. It is important to avoid extreme upper pressures and use appropriate mechanical protection.