Gas detector DG-P4E1/MR ammonia, 100ppm, from -40°C, electrochemical sensor

Gas detectors – reliable protection against hazards

Digital gas detectors DG-P/MR are devices designed for continuous monitoring of gas presence in rooms. Measuring the gas concentration in the surrounding air allows for a quick response in case of exceeding permissible norms. In the event of an alarm, the detector signals this visually, changes the state of the built-in relays, and transmits information to the digital supervisory module via the RS-485 network. These detectors are used in gas detection systems, providing comprehensive protection in industrial plants, logistics centers, and public utility facilities.

Construction and functionality

DG-P/MR detectors are distinguished by an interchangeable sensor module – semiconductor, electrochemical, or optical (Infra-Red). This design facilitates maintenance, simplifies calibration, and reduces operating costs. These devices are not intended for use in potentially explosive atmospheres. They have two alarm thresholds or measurement mode (depending on the sensor), built-in relays with adjustable thresholds, and RS-485 communication with the MODBUS RTU protocol. Additionally, they are equipped with a thermal compensation circuit, alarm state history, and the possibility of semi-automatic addressing in a digital network.

Application and benefits

This detector model, DG-P4E1/MR, is dedicated to detecting ammonia in a concentration range of up to 100 ppm, even at low temperatures – as low as -40°C. The electrochemical sensor provides precise measurement, and the ability to replace the sensor module minimizes maintenance and calibration costs.

• Fast response: Short gas permeability time through the sensor cover ensures quick hazard detection.
• Flexibility: The ability to select a sensor for a specific application allows for optimal device adaptation to user needs.
• Reliability: The built-in microprocessor guarantees stable and reliable detector operation.
• Easy installation: Screwless terminals facilitate wire connection, and two cable glands allow connecting subsequent detectors in a network.
• Standards and certificates: 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).
• Configuration: Detector settings can be configured using the dedicated "DETnet View" software.

The DG-P4E1/MR detector is a solid solution for installers and end-users looking for a reliable ammonia concentration monitoring system. Its compact dimensions (110 x 140 x 55 mm) and ease of installation make it ideal for various industrial and commercial applications.