Device group: Threshold gas detectors
Device type: DG/F
Device model: DG-4E/N2

Detectors DG/F are used for continuous monitoring of premises for combustible and toxic gases (and oxygen). The detectors come with two preset concentration thresholds for alarm purposes.

Detector DG/F cannot be used in hazardous locations (according to ATEX Directive).


  • two thresholds set at manufacturing stage;
  • semiconductor sensor for combustible gases or electrochemical sensor for toxic gases or oxygen;
  • easily exchangeable sensor unit for straightforward maintenance;
  • easy change of detected gas and easy calibration (all available DG/F sensor units ready to operate in each DG/F detector);
  • intelligent sensors with build-in TWA and STEL measurement, alarm history, recommended calibration time mark signal;
  • built-in temperature compensation;
  • low cost operation;
  • long time operation (typically 10 years for semiconductor sensors);
  • all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with PN-EN ISO/IEC 17025 (PCA accreditation No AP150).

Typical system configuration

Technical parameters

Gas sensor module Sensor Substance/property Standard alarm thresholds or measuring range
MS-4E/N2 Electrochemical Ammonia (NH3)
20/40 (TWA/STEL)

Two-state outputs (threshold)
Visual signalling, built-in
Supply voltage
System powered
110 x 140 x 55 mm
Net price
1,199.00 zł N


Series Technical data Device information sheet Instruction manual Declaration of conformity
U4 Download file Download file

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
Adaptation of DG/F, DG/M, DG/P or DG/PV detectors for installation into a ventilation duct
Test kits for checking the correct functioning of detectors