DG-A22L/N

New

DG/A two-threshold detectors are designed to detect the presence of dangerous concentrations of explosive or toxic gases or vapors in the air in industrial, enclosed spaces. They feature a replaceable sensor module with two alarm thresholds (thresholds set at the production stage, with a built-in third threshold that is usually the upper recommended measurement range).

DG/A detectors have a passive 4-20 mA, 3-wire interface and are designed to work with MDP alarm modules or other control modules that accept devices with a passive (current-absorbing) output.

DG/A detectors are of standard design and cannot be used in areas classified as hazardous due to the presence of gases, vapors, or dust.

Features

• replaceable, intelligent semiconductor gas sensor;
• two alarm thresholds set at the production stage (the third threshold is usually the upper measurement range of the gas sensor, signaled only optically), 4-20 mA passive, 3-wire interface;
• built-in event history (analysis available from the manufacturer), indication of the recommended calibration period; built-in test procedure to recognize output cables (after power-up);
• thermal compensation system (can be used in variable environmental conditions);
• easy gas penetration through the sensor cover = relatively short detector response time;
• built-in optical signaling (multi-color LED);
• removable terminals with the possibility of mounting single and multi-wire cores (cable - without crimping sleeves);
• splash-proof IP44 gas sensor cover (in the recommended mounting position);
• can be equipped with a mechanical cover made of AR-1 profiled pipes (installation in areas exposed to mechanical damage, e.g., warehouses, wholesale stores, parking lots);
• can be equipped with a housing for installation on a ventilation duct (version DG/w);
• all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with the PN-EN ISO/IEC 17025 standard (PCA accreditation no. AP150).