
DG/MR
Threshold detectors of toxic and combustible gases (also oxygen and Freon HFC) with splash-proof construction, RS-485 bus connectivity, and relay outputs
Digital DG/MR detectors are designed for continuous monitoring of gases in enclosed spaces. When preset concentration values are exceeded, the detector’s optical alarm signaling is activated, built-in relays change their state and information is transmitted to a digital control module using a RS-485 network. The detectors are designed for work 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 gas sensor modules facilitates maintenance, simplifies calibration and reduces operating costs.
The DG/MR detectors 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 status);
- sensor in replaceable intelligent module (replaceable with DG/F and DG/P);
- 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);
- screwless terminals, removable, 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 configuration software “DETnet View”, available at https://www.gazex.pl/oprogramowanie/;
- all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with PN-EN ISO/IEC 17025 (PCA accreditation no. AP150).
Block diagram
Offered models
Model | Type | Gas sensor module | Sensor | Substance/property | Standard alarm thresholds or measuring range | Supply voltage | Net price | C/G | ||
---|---|---|---|---|---|---|---|---|---|---|
DG-12/MR |
|
DG/MR | MS-12/N | Semiconductor |
Methane (CH4) |
10/30 |
%LEL |
24VDC | 709.00 zł | S |
DG-14/MR |
|
DG/MR | MS-14/N | Semiconductor |
Methane (CH4) |
10/30 |
%LEL |
24VDC | 709.00 zł | S |
DG-15/MR |
|
DG/MR | MS-15/N | Semiconductor |
Liquefied petroleum gas (LPG) |
10/30 |
%LEL |
24VDC | 709.00 zł | S |
DG-22L/MR |
|
DG/MR | MS-22/NL | Semiconductor |
Carbon monoxide (CO) |
20/100 |
ppm |
24VDC | 709.00 zł | N |
DG-31/MR |
|
DG/MR | MS-31/N | Semiconductor |
Organic compounds (VOC) |
20/40 |
%LEL |
24VDC | 789.00 zł | N |
DG-41/MR |
|
DG/MR | MS-41/N | Semiconductor |
Ammonia (NH3) |
500/1500 |
ppm |
24VDC | 749.00 zł | N |
DG-61/MR |
|
DG/MR | MS-61/N | Semiconductor |
Hydrofluorocarbons (HFC) |
1000/2000 |
ppm |
24VDC | 749.00 zł | N |
DG-71/MR |
|
DG/MR | MS-71/N | Semiconductor |
Acetylene (C2H2) or Hydrogen (H2) |
10/30 |
%LEL |
24VDC | 749.00 zł | N |
DG-72/MR |
|
DG/MR | MS-72/N | Semiconductor |
Hydrogen (H2) |
20/40 |
%LEL |
24VDC | 709.00 zł | S |
DG-TF/MR |
|
DG/MR | MS-TF | Semiconductor |
Temperature (T) |
– |
°C |
24VDC | 519.00 zł | N |
DG-0E.ASH3/MR |
|
DG/MR | MS-0E.ASH3/N | Electrochemical |
Arsine (AsH3) |
0,2/0,4 |
ppm |
24VDC | N | |
DG-0E.B2H6/MR |
|
DG/MR | MS-0E.B2H6/N | Electrochemical |
Diborane (B2H6) |
0,2/0,4 |
ppm |
24VDC | N | |
DG-0E.CL2/MR |
|
DG/MR | MS-0E.CL2/N | Electrochemical |
Chlorine (Cl2) |
1/3 |
ppm |
24VDC | N | |
DG-0E.CLO2/MR |
|
DG/MR | MS-0E.CLO2/N | Electrochemical |
Chlorine dioxide (ClO2) |
0,1/0,3 (TWA/STEL) |
ppm |
24VDC | N | |
DG-0E.COCL2/MR |
|
DG/MR | MS-0E.COCL2/N | Electrochemical |
Phosgene (COCl2) |
0,2/0,4 |
ppm |
24VDC | N | |
DG-0E.ETO/MR |
|
DG/MR | MS-0E.ETO/N | Electrochemical |
Ethylene oxide (C2H4O) |
2/5 |
ppm |
24VDC | N | |
DG-0E.HCL/MR |
|
DG/MR | MS-0E.HCL/N | Electrochemical |
Hydrogen chloride (HCl) |
3,3/6,6 (TWA/STEL) |
ppm |
24VDC | N | |
DG-0E.HCN/MR |
|
DG/MR | MS-0E.HCN/N | Electrochemical |
Hydrogen cyanide (HCN) |
3/6 |
ppm |
24VDC | N | |
DG-0E.NO2/MR |
|
DG/MR | MS-0E.NO2/N | Electrochemical |
Nitrogen dioxide (NO2) |
1/3 |
ppm |
24VDC | N | |
DG-0E.NO/MR |
|
DG/MR | MS-0E.NO/N | Electrochemical |
Nitrogen monoxide (NO) |
2/– (TWA/STEL) |
ppm |
24VDC | N | |
DG-0E.O3/MR |
|
DG/MR | MS-0E.O3/N | Electrochemical |
Ozone (O3) |
0,2/0,3 |
ppm |
24VDC | N | |
DG-0E.PH3/MR |
|
DG/MR | MS-0E.PH3/N | Electrochemical |
Hydrogen phosphide (PH3) |
0,1/0,2 (TWA/STEL) |
ppm |
24VDC | N | |
DG-0E.SEH2/MR |
|
DG/MR | MS-0E.SEH2/N | Electrochemical |
Hydrogen selenide (H2Se) |
1/3 |
ppm |
24VDC | N | |
DG-0E.SIH4/MR |
|
DG/MR | MS-0E.SIH4/N | Electrochemical |
Silane (SiH4) |
5/10 |
ppm |
24VDC | N | |
DG-0E.SO2/MR |
|
DG/MR | MS-0E.SO2/N | Electrochemical |
Sulfur dioxide (SO2) |
0.5/1 (TWA/STEL) |
ppm |
24VDC | N | |
DG-2E/MR |
|
DG/MR | MS-2E/N | Electrochemical |
Carbon monoxide (CO) |
20/100 |
ppm |
24VDC | 949.00 zł | N |
DG-4E1/MR |
|
DG/MR | MS-4E/N1 | Electrochemical |
Ammonia (NH3) |
20/40 (TWA/STEL) |
ppm |
24VDC | 1,049.00 zł | N |
DG-4E2/MR |
|
DG/MR | MS-4E/N2 | Electrochemical |
Ammonia (NH3) |
20/40 (TWA/STEL) |
ppm |
24VDC | 1,249.00 zł | N |
DG-4E/MR |
|
DG/MR | MS-4E/N | Electrochemical |
Ammonia (NH3) |
500/800 |
ppm |
24VDC | 1,049.00 zł | N |
DG-5E/MR |
|
DG/MR | MS-5E/N | Electrochemical |
Hydrogen sulfide (H2S) |
5/10 (TWA/STEL) |
ppm |
24VDC | 949.00 zł | N |
DG-7E/MR |
|
DG/MR | MS-7E/N | Electrochemical |
Hydrogen (H2) |
500/800 |
ppm |
24VDC | 1,049.00 zł | N |
DG-9E/MR |
|
DG/MR | MS-9E/N | Electrochemical |
Oxygen (O2) |
19/18 |
%v/v |
24VDC | 899.00 zł | S |
DG-1R2/MR |
|
DG/MR | MS-1R2/N | Infra-red |
Methane (CH4) |
10/30 |
%LEL |
24VDC | 1,649.00 zł | S |
DG-1R5/MR |
|
DG/MR | MS-1R5/N | Infra-red |
Liquefied petroleum gas (LPG) |
10/30 |
%LEL |
24VDC | 1,649.00 zł | S |
DG-3R/MR |
|
DG/MR | MS-3R/N | Infra-red |
Organic compounds (VOC) |
20/40 |
%LEL |
24VDC | 1,789.00 zł | N |
DG-6R7/MR |
|
DG/MR | MS-6R7/N | Infra-red |
Hydrofluorocarbons (HFC) |
500/1500 |
ppm |
24VDC | 2,929.00 zł | N |
DG-6R7/MR-SF6 |
|
DG/MR | MS-6R7/N-SF6 | Infra-red |
Sulfur hexafluoride (SF6) |
500/1500 |
ppm |
24VDC | 2,929.00 zł | N |
DG-8R8/MR |
|
DG/MR | MS-8R8/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5 |
%v/v |
24VDC | 1,149.00 zł | S |
DG-8R/MR |
|
DG/MR | MS-8R/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5 |
%v/v |
24VDC | 1,649.00 zł | 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.