Gas detector DG-4E2/MR ammonia (selective - wastewater treatment plants), nds/ndsch, electrochemical sensor

Gas detectors DG-4E2/MR – reliable protection against ammonia leakage

Digital detectors of the DG/MR series, such as the DG-4E2/MR model, are devices designed for continuous monitoring of gas concentrations in various spaces. This detector is specifically designed to detect ammonia, making it an ideal solution for wastewater treatment plants and other facilities where there is a risk of this gas emission. Thanks to precise measurement and a quick response to exceeding permissible levels, it provides effective protection for both people in the vicinity and the environment.

The DG-4E2/MR detector utilizes an advanced electrochemical sensor, which guarantees high selectivity and measurement accuracy. Built-in two alarm thresholds and the ability to operate in measurement mode allow for flexible adaptation of the device to specific installation needs. Information about exceeding the alarm is signaled optically and transmitted via built-in low-voltage relays and an RS-485 interface with the MODBUS RTU protocol – enabling integration with monitoring and control systems.

Design and functionality for professionals and end-users

The DG-4E2/MR detector stands out with its modular design, which facilitates servicing and calibration. A replaceable sensor module allows for quick replacement of a damaged element or adaptation of the detector to another type of gas. Screwless terminals simplify the connection of wires, and two cable glands allow connecting subsequent detectors in a network. The device also has a function of semi-automatic addressing in a digital network, which simplifies system configuration.

Thanks to its compact dimensions (110 x 140 x 55 mm) and the possibility of wall or ceiling mounting, the DG-4E2/MR detector can be easily installed in various locations. A built-in microprocessor ensures stable and reliable operation of the device, and a thermal compensation circuit minimizes the impact of temperature changes on measurement accuracy. Additionally, the detector has a history of alarm states, which facilitates analysis of events and identification of potential problems.

Application and compliance with standards

DG/MR detectors are used in industrial plants, logistics centers, public utility facilities, and large rooms threatened by the emission of toxic or explosive gases. They are particularly recommended for monitoring ammonia concentrations in wastewater treatment plants and other industrial installations. It should be remembered that these detectors have a standard construction and cannot be used in areas at risk of explosion of gases, vapors, or dust. All GAZEX detectors are calibrated in their own Calibrating Laboratory operating in accordance with the PN-EN ISO/IEC 17025 standard (PCA accreditation No. AP150), which guarantees their high quality and measurement accuracy. The detector is powered by 24V= voltage.