Gas detector DG-6R7/M-Nstd HFC (Refrigerants), field calibration, IR sensor DG-6R7/M-NSTD

Refrigerant Leak Detection – Reliable Installation Safety

The DG-6R7/M-Nstd gas detector is an advanced device designed for continuous monitoring of refrigerant (HFC/Freon) presence in rooms. It utilizes an optical sensor (Infra-Red) providing precise gas concentration measurement and a quick response in case of exceeding permissible levels. The device is a key element of gas detection systems, guaranteeing safety in industrial plants, logistics centers, and public facilities.

Functionality and Application

The DG-6R7/M-Nstd detector is part of a Digital Gas Detection System, enabling integration with other devices and a central supervisory module. Communication is via RS-485 port with MODBUS RTU protocol, ensuring reliable data transmission. A built-in microprocessor ensures stable operation, and a thermal compensation circuit minimizes the impact of temperature changes on measurement accuracy. When a dangerous gas concentration is detected, the detector activates an optical signal and transmits information to the supervisory system.

The device finds application wherever there is a risk of refrigerant leaks, such as:

• air conditioning and ventilation systems;
• industrial refrigeration;
• rooms with refrigeration equipment;
• laboratories and research facilities.

Construction and User Features

The DG-6R7/M-Nstd detector is characterized by a solid construction and splash-proof housing (IP44) made of high-impact ABS, ensuring its durability even in harsh working conditions. A replaceable sensor module facilitates maintenance and calibration, and also allows adaptation of the device to specific application needs. Two cable glands facilitate connecting subsequent detectors in a network. Additionally, it is possible to extend the device with a relay output module (DG/MR version) or a protective cover (AR-1d). Detector settings are configured using dedicated "DETnet View" software.

It is worth noting a few key features:

• Fast response time: Short gas permeability time through the sensor cover ensures quick leak detection.
• High accuracy: Optical sensor (Infra-Red) guarantees precise gas concentration measurements.
• Easy integration: RS-485 communication with MODBUS RTU protocol enables easy connection to supervisory systems.
• Reliability: Built-in microprocessor ensures stable device operation.
• Replaceable sensor: Simplifies maintenance and reduces operating costs.
• Calibration: The device is factory calibrated according to PN-EN ISO/IEC 17025 standard by the GAZEX Calibration Laboratory (PCA accreditation No. AP150).

The supply voltage is 24 V=. The device dimensions are 110 x 140 x 55 mm. Communication is via the RS-485 standard, and the detector uses the MS-6R7/N sensor module based on Infra-Red optical technology for detecting HFC (Freon) refrigerants. The detector's measurement range is 500/1500 ppm, with the possibility of custom calibration.