Threshold gas detectors DG/F
Threshold detectors of toxic and combustible gases (also oxygen and refrigerants) with splash-proof construction
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.
DG/F detectors are designed to work only with:
- threshold control units of type MD-1.A/T, MD-1, MD-2, MD-4;
- measuring and threshold control units of type MDP-1.A/T, MDP-1 PLUS, MDP-4, MDP-8, MDP-16.
DG/F are detectors of standard design and cannot be used in areas classified as hazardous due to the presence of gases, vapors, or dust.
Features
- replaceable gas sensor: semiconductor, electrochemical, catalytic, optical (Infra-Red);
- two alarm thresholds set during production (the third threshold is usually the upper measurement range of the gas sensor, signaled only visually), 4-wire interface;
- built-in event history (analysis available from the manufacturer), indication of the recommended calibration period expiry; built-in test procedure for recognizing output cables (after power-up);
- thermal compensation system (can be used in variable environmental conditions);
- easy gas penetration through the sensor cover = relatively short detector response time;
- built-in optical signaling (multi-color LED);
- removable terminals with the possibility of mounting single- and multi-wire cores (cable – without crimping sleeves);
- splash-proof IP44 gas sensor cover (in the recommended mounting position);
- can be equipped with a mechanical cover made of AR-1 profiled pipes (installation in areas exposed to mechanical damage, e.g., warehouses, wholesale stores, parking lots);
- can be equipped with a housing for installation on a ventilation duct (DG/w);
- all detectors are calibrated in GAZEX Calibration Laboratory operating in accordance with the PN-EN ISO/IEC 17025 standard (PCA accreditation no. AP150).
Offered models
| Model | Gas sensor module | Sensor | Substance/property | Standard alarm thresholds | Measuring range | UoM | Supply voltage | |
|---|---|---|---|---|---|---|---|---|
| DG-12/N | MS-12/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
5—40 |
%LEL |
System powered | |
| DG-14/N | MS-14/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
5—40 |
%LEL |
System powered | |
| DG-15/N | MS-15/N | Semiconductor |
Liquefied petroleum gas (LPG) |
10/30/(40) |
5—40 |
%LEL |
System powered | |
| DG-22/NL | MS-22/NL | Semiconductor |
Carbon monoxide (CO) |
20/100/(200) |
20—1000 |
ppm |
System powered | |
| DG-31/N | MS-31/N | Semiconductor |
Organic compounds |
20/40/(50) |
5—40 |
%LEL |
System powered | |
| DG-41/N | MS-41/N | Semiconductor |
Ammonia (NH3) |
500/1500/(2000) |
300—5000 |
ppm |
System powered | |
| DG-61/N | MS-61/N | Semiconductor |
R32 or R410A |
1000/2000/(2500) |
500—3000 |
ppm |
System powered | |
| DG-71/N | MS-71/N | Semiconductor |
Acetylene (C2H2) or Hydrogen (H2) |
10/30/(40) |
5—40 |
%LEL |
System powered | |
| DG-73/N | MS-73/N | Semiconductor |
Hydrogen (H2) |
10/30/(40) |
5—40 |
%LEL |
System powered | |
| DG-1KL/N | MS-1KL/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
System powered | |
| DG-1KL4/N | MS-1KL4/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
System powered | |
| DG-1KL5/N | MS-1KL5/N | Catalytic |
Liquefied petroleum gas (LPG) |
10/30/50 |
10—50 |
%LEL |
System powered | |
| DG-7KL3/N | MS-7KL3/N | Catalytic |
Hydrogen (H2) |
10/30/50 |
10—50 |
%LEL |
System powered | |
| DG-0E.CL2/N | MS-0E.CL2/N | Electrochemical |
Chlorine (Cl2) |
1/3/5 |
1—10 |
ppm |
System powered | |
| DG-0E.CLO2/N | MS-0E.CLO2/N | Electrochemical |
Chlorine dioxide (ClO2) |
0,1/0,3/0,5 |
0—1 |
ppm |
System powered | |
| DG-0E.ETO/N | MS-0E.ETO/N | Electrochemical |
Ethylene oxide (C2H4O) |
2/5/10 |
2—20 |
ppm |
System powered | |
| DG-0E.HCL/N | MS-0E.HCL/N | Electrochemical |
Hydrogen chloride (HCl) |
3,4/6,8/10 |
3—30 |
ppm |
System powered | |
| DG-0E.NO2/N | MS-0E.NO2/N | Electrochemical |
Nitrogen dioxide (NO2) |
1/3/5 |
1—30 |
ppm |
System powered | |
| DG-0E.O3/N | MS-0E.O3/N | Electrochemical |
Ozone (O3) |
0,2/0,3/0,5 |
0—1 |
ppm |
System powered | |
| DG-0E.SO2/N | MS-0E.SO2/N | Electrochemical |
Sulfur dioxide (SO2) |
0,5/1/5 |
1—20 |
ppm |
System powered | |
| DG-2E/N | MS-2E/N | Electrochemical |
Carbon monoxide (CO) |
20/100/200 |
20—500 |
ppm |
System powered | |
| DG-4E/N | MS-4E/N | Electrochemical |
Ammonia (NH3) |
500/800/800 |
300—1000 |
ppm |
System powered | |
| DG-4E/N1 | MS-4E/N1 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
System powered | |
| DG-4E/N2 | MS-4E/N2 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
System powered | |
| DG-5E/N | MS-5E/N | Electrochemical |
Hydrogen sulfide (H2S) |
5/10/20 |
5—100 |
ppm |
System powered | |
| DG-7E/N | MS-7E/N | Electrochemical |
Hydrogen (H2) |
500/800/1000 |
500—2000 |
ppm |
System powered | |
| DG-9E5/N | MS-9E5/N | Electrochemical |
Oxygen (O2) |
19/18/17 |
2—25 |
%v/v |
System powered | |
| DG-1R2/N | MS-1R2/N | Infra-red |
Methane (CH4) |
10/30/50 |
5—50 |
%LEL |
System powered | |
| DG-1R5/N | MS-1R5/N | Infra-red |
Liquefied petroleum gas (LPG) |
10/30/50 |
5—50 |
%LEL |
System powered | |
| DG-3R/N | MS-3R/N | Infra-red |
Organic compounds |
20/40/50 |
10—50 |
%LEL |
System powered | |
| DG-6R7/N | MS-6R7/N | Infra-red |
R32 or R410A |
500/1500/2000 |
500—2000 |
ppm |
System powered | |
| DG-6R7/N-SF6 | MS-6R7/N-SF6 | Infra-red |
Sulfur hexafluoride (SF6) |
500/1500/2000 |
500—2000 |
ppm |
System powered | |
| DG-8R/N | MS-8R/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—5 |
%v/v |
System powered | |
| DG-8R8/N | MS-8R8/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—2 |
%v/v |
System powered | |
| Model | Gas sensor module | Sensor | Substance/property | Standard alarm thresholds | Measuring range | UoM | Supply voltage | Contact control outputs | Voltage control outputs 12VDC | Two-state outputs (threshold) | Control output "Fault" | Output controlling the shut-off valve | Visual signalling, built-in | Acoustic signaling, built-in | Internal battery | Dimensions | Price excl. VAT | Price inc. VAT | C.g. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DG-12/N | MS-12/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
5—40 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN769.00 | PLN945.87 | S | |
| DG-14/N | MS-14/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
5—40 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN769.00 | PLN945.87 | S | |
| DG-15/N | MS-15/N | Semiconductor |
Liquefied petroleum gas (LPG) |
10/30/(40) |
5—40 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN769.00 | PLN945.87 | S | |
| DG-22/NL | MS-22/NL | Semiconductor |
Carbon monoxide (CO) |
20/100/(200) |
20—1000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN819.00 | PLN1,007.37 | N | |
| DG-31/N | MS-31/N | Semiconductor |
Organic compounds |
20/40/(50) |
5—40 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,019.00 | PLN1,253.37 | N | |
| DG-41/N | MS-41/N | Semiconductor |
Ammonia (NH3) |
500/1500/(2000) |
300—5000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN819.00 | PLN1,007.37 | N | |
| DG-61/N | MS-61/N | Semiconductor |
R32 or R410A |
1000/2000/(2500) |
500—3000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN819.00 | PLN1,007.37 | N | |
| DG-71/N | MS-71/N | Semiconductor |
Acetylene (C2H2) or Hydrogen (H2) |
10/30/(40) |
5—40 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN819.00 | PLN1,007.37 | N | |
| DG-73/N | MS-73/N | Semiconductor |
Hydrogen (H2) |
10/30/(40) |
5—40 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN819.00 | PLN1,007.37 | S | |
| DG-1KL/N | MS-1KL/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 153 x 60 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-1KL4/N | MS-1KL4/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 153 x 60 mm | PLN1,099.00 | PLN1,351.77 | N | |
| DG-1KL5/N | MS-1KL5/N | Catalytic |
Liquefied petroleum gas (LPG) |
10/30/50 |
10—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 153 x 60 mm | PLN1,099.00 | PLN1,351.77 | N | |
| DG-7KL3/N | MS-7KL3/N | Catalytic |
Hydrogen (H2) |
10/30/50 |
10—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 153 x 60 mm | PLN1,099.00 | PLN1,351.77 | N | |
| DG-0E.CL2/N | MS-0E.CL2/N | Electrochemical |
Chlorine (Cl2) |
1/3/5 |
1—10 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | PLN1,782.27 | N | |
| DG-0E.CLO2/N | MS-0E.CLO2/N | Electrochemical |
Chlorine dioxide (ClO2) |
0,1/0,3/0,5 |
0—1 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN2,449.00 | PLN3,012.27 | N | |
| DG-0E.ETO/N | MS-0E.ETO/N | Electrochemical |
Ethylene oxide (C2H4O) |
2/5/10 |
2—20 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | PLN1,782.27 | N | |
| DG-0E.HCL/N | MS-0E.HCL/N | Electrochemical |
Hydrogen chloride (HCl) |
3,4/6,8/10 |
3—30 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,949.00 | PLN2,397.27 | N | |
| DG-0E.NO2/N | MS-0E.NO2/N | Electrochemical |
Nitrogen dioxide (NO2) |
1/3/5 |
1—30 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | PLN1,782.27 | N | |
| DG-0E.O3/N | MS-0E.O3/N | Electrochemical |
Ozone (O3) |
0,2/0,3/0,5 |
0—1 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,949.00 | PLN2,397.27 | N | |
| DG-0E.SO2/N | MS-0E.SO2/N | Electrochemical |
Sulfur dioxide (SO2) |
0,5/1/5 |
1—20 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | PLN1,782.27 | N | |
| DG-2E/N | MS-2E/N | Electrochemical |
Carbon monoxide (CO) |
20/100/200 |
20—500 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-4E/N | MS-4E/N | Electrochemical |
Ammonia (NH3) |
500/800/800 |
300—1000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-4E/N1 | MS-4E/N1 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-4E/N2 | MS-4E/N2 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,469.00 | PLN1,806.87 | N | |
| DG-5E/N | MS-5E/N | Electrochemical |
Hydrogen sulfide (H2S) |
5/10/20 |
5—100 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-7E/N | MS-7E/N | Electrochemical |
Hydrogen (H2) |
500/800/1000 |
500—2000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-9E5/N | MS-9E5/N | Electrochemical |
Oxygen (O2) |
19/18/17 |
2—25 |
%v/v |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 153 x 60 mm | PLN1,199.00 | PLN1,474.77 | N | |
| DG-1R2/N | MS-1R2/N | Infra-red |
Methane (CH4) |
10/30/50 |
5—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,999.00 | PLN2,458.77 | N | |
| DG-1R5/N | MS-1R5/N | Infra-red |
Liquefied petroleum gas (LPG) |
10/30/50 |
5—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,999.00 | PLN2,458.77 | N | |
| DG-3R/N | MS-3R/N | Infra-red |
Organic compounds |
20/40/50 |
10—50 |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN2,199.00 | PLN2,704.77 | N | |
| DG-6R7/N | MS-6R7/N | Infra-red |
R32 or R410A |
500/1500/2000 |
500—2000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | F | |||
| DG-6R7/N-SF6 | MS-6R7/N-SF6 | Infra-red |
Sulfur hexafluoride (SF6) |
500/1500/2000 |
500—2000 |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | F | |||
| DG-8R/N | MS-8R/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—5 |
%v/v |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,999.00 | PLN2,458.77 | N | |
| DG-8R8/N | MS-8R8/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—2 |
%v/v |
System powered | — | — | 2 | — | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | PLN1,782.27 | N | |
Suggested products
Adaptation of DG/F, DG/M, DG/P or DG/PV detectors for installation into a ventilation duct
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 sets for verifying the correct operation of detectors by injecting a gaseous test mixture into the measuring chamber of the detector