Threshold gas detectors DG/M

Digital detector type DG/M is designed for continuous monitoring of the concentration of specified gas on the premises monitored by Digital Gas Detection System. When the concentration exceeds a preset threshold, the detector produces a signal in the system via RS-485 network and switches on built-in LEDs.

Detector can be equipped with a semiconductor, electrochemical or Infra-Red sensor.

The detector has a removable module with the intelligent sensor, which facilitates maintenance and lowers operating costs. Detector DG/M cannot be used in hazardous locations.

Scope of application

  • industrial areas, factories, logistics centers, public buildings
  • dispersed gas detection systems

Features

  • communication, control and transfer of information through the port RS-485 with MODBUS RTU protocol;
  • short response time;
  • gas sensor in intelligent, EXCHANGEABLE module;
  • built-in microprocessor control provides reliability, stability, thermal compensation system, the history of alarm, semi-automatic address control;
  • 3 or 2 alarm thresholds mode or gas concentration measurement mode;
  • optical signaling (4x LEDs); fast removable connection pins for FTP type cables;
  • splash-proof case (IP44)
  • 2 cable glands enabling easy connection of multiple detectors in series;
  • optional: additional steel pipes cover (AR-1d) or the duct-mouting casing (version DG…/Mw);
  • all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with PN-EN ISO/IEC 17025 (PCA accreditation No AP150).

Offered models

Model Gas sensor module Sensor Substance/property Standard alarm thresholds or measuring range Supply voltage Net price C/G
RS-485 MS-12/N Semiconductor Methane (CH4)
10/30
%LEL
24VDC PLN729.00 S
RS-485 MS-14/N Semiconductor Methane (CH4)
10/30
%LEL
24VDC PLN729.00 S
RS-485 MS-15/N Semiconductor Liquefied petroleum gas (LPG)
10/30
%LEL
24VDC PLN729.00 S
RS-485 MS-22/NL Semiconductor Carbon monoxide (CO)
20/100
ppm
24VDC PLN729.00 N
RS-485 MS-31/N Semiconductor Organic compounds
20/40
%LEL
24VDC PLN869.00 N
RS-485 MS-41/N Semiconductor Ammonia (NH3)
500/1500
ppm
24VDC PLN769.00 N
RS-485 MS-61/N Semiconductor Hydrofluorocarbons (HFC)
1000/2000
ppm
24VDC PLN769.00 N
RS-485 MS-71/N Semiconductor Acetylene (C2H2)
or Hydrogen (H2)
10/30
%LEL
24VDC PLN769.00 N
RS-485 MS-73/N Semiconductor Hydrogen (H2)
10/30
%LEL
24VDC PLN769.00 S
RS-485 MS-0E.CL2/N Electrochemical Chlorine (Cl2)
1/3
ppm
24VDC PLN1,299.00 N
RS-485 MS-0E.CLO2/N Electrochemical Chlorine dioxide (ClO2)
0,1/0,3 (TWA/STEL)
ppm
24VDC PLN2,299.00 N
RS-485 MS-0E.ETO/N Electrochemical Ethylene oxide (C2H4O)
2/5
ppm
24VDC PLN1,299.00 N
RS-485 MS-0E.HCL/N Electrochemical Hydrogen chloride (HCl)
3,3/6,6 (TWA/STEL)
ppm
24VDC PLN1,799.00 N
RS-485 MS-0E.HCN/N Electrochemical Hydrogen cyanide (HCN)
3/6
ppm
24VDC PLN1,799.00 N
RS-485 MS-0E.NO2/N Electrochemical Nitrogen dioxide (NO2)
1/3
ppm
24VDC PLN1,299.00 N
RS-485 MS-0E.NO/N Electrochemical Nitrogen monoxide (NO)
2/– (TWA/STEL)
ppm
24VDC PLN1,299.00 N
RS-485 MS-0E.O3/N Electrochemical Ozone (O3)
0,2/0,3
ppm
24VDC PLN1,799.00 N
RS-485 MS-0E.PH3/N Electrochemical Hydrogen phosphide (PH3)
0,1/0,2 (TWA/STEL)
ppm
24VDC PLN2,299.00 N
RS-485 MS-0E.SO2/N Electrochemical Sulfur dioxide (SO2)
0.5/1 (TWA/STEL)
ppm
24VDC PLN1,299.00 N
RS-485 MS-2E/N Electrochemical Carbon monoxide (CO)
20/100
ppm
24VDC PLN1,069.00 N
RS-485 MS-4E/N1 Electrochemical Ammonia (NH3)
20/40 (TWA/STEL)
ppm
24VDC PLN1,069.00 N
RS-485 MS-4E/N2 Electrochemical Ammonia (NH3)
20/40 (TWA/STEL)
ppm
24VDC PLN1,269.00 N
RS-485 MS-4E/N Electrochemical Ammonia (NH3)
500/800
ppm
24VDC PLN1,069.00 N
RS-485 MS-5E/N Electrochemical Hydrogen sulfide (H2S)
5/10 (TWA/STEL)
ppm
24VDC PLN1,069.00 N
RS-485 MS-7E/N Electrochemical Hydrogen (H2)
500/800
ppm
24VDC PLN1,069.00 N
RS-485 MS-9E/N Electrochemical Oxygen (O2)
19/18
%v/v
24VDC PLN1,069.00 N
RS-485 MS-1R2/N Infra-red Methane (CH4)
10/30
%LEL
24VDC PLN1,789.00 S
RS-485 MS-1R5/N Infra-red Liquefied petroleum gas (LPG)
10/30
%LEL
24VDC PLN1,789.00 S
RS-485 MS-3R/N Infra-red Organic compounds
20/40
%LEL
24VDC PLN1,889.00 N
RS-485 MS-6R7/N Infra-red Hydrofluorocarbons (HFC)
500/1500
ppm
24VDC PLN3,039.00 N
RS-485 MS-6R7/N-SF6 Infra-red Sulfur hexafluoride (SF6)
500/1500
ppm
24VDC PLN3,039.00 N
RS-485 MS-8R8/N Infra-red Carbon dioxide (CO2)
0,5/1,5
%v/v
24VDC PLN1,289.00 S
RS-485 MS-8R/N Infra-red Carbon dioxide (CO2)
0,5/1,5
%v/v
24VDC PLN1,789.00 N

Detection of substance/property in other areas or other substances/properties is possible = special execution, requires consultation.
In special cases, it is possible to select the detector parameters for a specific application = required analysis of the conditions of use.

Suggested products

AP-1
Splash-proof enclosures AP-1
Splash-proof enclosures to protect detectors from adverse weather conditions and mechanical damage
AR-1
Tubular shields AR-1
Profiled tube guards to protect the detector from direct mechanical damage
DG/w
DG/w
Adaptation of DG/F, DG/M, DG/P or DG/PV detectors for installation into a ventilation duct
MR2
MR2
Modules extending functionality of DG/M and DG-P/M detectors with two NO/NC relays
GTS
Gas test sets GTS
Test sets for verifying the correct operation of detectors by injecting a gaseous test mixture into the measuring chamber of the detector