Measurement & threshold gas detectors DG-P/MR
Discontinued
Concentration measurement and detection devices for toxic and combustible gases (also oxygen and refrigerants) with splash-proof construction, RS-485 bus connectivity, and relay outputs
Digital DG-P/MR detectors are designed for continuous monitoring of gases indoors. The detector performs cyclic measurements of the gas concentration in ambient air . When preset concentration values are exceeded (for a threshold version), the detector’s optical alarm signaling is activated, the built-in relays change their status and the information is transferred to a digital control module (for the measurement version the concentration value) - using a network in the industrial standard RS-485. The detectors are designed for operation in the Digital Gas Detection System.
The detectors have an exchangeable module with a semiconductor, electrochemical or optical sensor (Infra-Red). The interchangeability of the sensory modules improves maintenance, simplifies calibration and reduces operating costs.
The DG-P/MR detectors are of standard design and cannot be used in areas classified as explosive atmospheres of gases, vapours or dust.
Area of application
- industrial plants, logistics centres, public facilities;
- extensive rooms at risk of toxic or explosive gas emissions with locally controlled sirens.
Features
- communication, control and transmission of information through the port in RS-485 standard, with MODBUS RTU protocol;
- two alarm thresholds or measurement mode (for electrochemical sensors and Infra-Red);
- two built-in relays with NO/NC contact, on a removable board (for A1 and A2 state, possibility of threshold adjustment in the measurement mode);
- sensor in an interchangeable intelligent module (interchangeable with DG/F and DG/P type detectors);
- sensor can be selected for the application;
- short detector response time;
- built-in control microprocessor means reliable and stable operation;
- thermal compensation system;
- history of alarm states;
- semi-automatic addressing in digital network (without opening the housing);
- removable, screwless terminals with possibility of connecting two FTP wires;
- selective LED optical optimization;
- two cable entries – easy connection of successive detectors (loop-through);
- optionally, the possibility of being equipped with an additional casing made of steel pipes (AR-1d) or a casing for ventilation ducts (DG/w version);
- configuration of detector settings via dedicated software „DETnet View”, available at https://www.gazex.pl/en/software/;
- all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with PN-EN ISO/IEC 17025 (PCA accreditation no. AP150).
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