DG-P0E.HCN/MR Digital RS-485 output

Device group: Concentration-measuring gas detectors
Device type: DG-P/MR

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.


  • 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).

Device model: DG-P0E.HCN/MR

Technical parameters

Gas sensor module Sensor Substance/property Standard alarm thresholds or measuring range
MS-P0E.HCN/N Electrochemical Hydrogen cyanide (HCN)
0 ÷ 30

Contact control outputs
Output in RS-485 standard
Visual signalling, built-in
Supply voltage
110 x 140 x 55 mm
Net price


Series Technical data Device information sheet Instruction manual Declaration of conformity

Suggested products

Splash-proof enclosures to protect detectors from adverse weather conditions and mechanical damage
Profiled tube guards to protect the detector from direct mechanical damage
Test kits for checking the correct functioning of detectors