Threshold gas detectors DG/A
New
New
Threshold detectors of toxic and combustible gases (also oxygen and refrigerants) with splash-proof construction with 4-20 mA connectivity
DG/A two-threshold detectors are designed to detect the presence of dangerous concentrations of explosive or toxic gases or vapors in the air in industrial, enclosed spaces. They feature a replaceable sensor module with two alarm thresholds (thresholds set at the production stage, with a built-in third threshold that is usually the upper recommended measurement range).
DG/A detectors have a passive 4-20 mA, 3-wire interface and are designed to work with MDP alarm modules or other control modules that accept devices with a passive (current-absorbing) output.
DG/A detectors are of standard design and cannot be used in areas classified as hazardous due to the presence of gases, vapors, or dust.
Features
- replaceable, intelligent semiconductor gas sensor;
- two alarm thresholds set at the production stage (the third threshold is usually the upper measurement range of the gas sensor, signaled only optically), 4-20 mA passive, 3-wire interface;
- built-in event history (analysis available from the manufacturer), indication of the recommended calibration period; built-in test procedure to recognize 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 (version DG/w);
- all detectors are calibrated in our own 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 or measuring range | Supply voltage | Net price | C.g. | ||
|---|---|---|---|---|---|---|---|---|---|
| DG-A12/N | New | MS-12/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
%LEL |
System powered | PLN769.00 | N |
| DG-A14/N | New | MS-14/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
%LEL |
System powered | PLN769.00 | N |
| DG-A15/N | New | MS-15/N | Semiconductor |
Liquefied petroleum gas (LPG) |
10/30/(40) |
%LEL |
System powered | PLN769.00 | N |
| DG-A22L/N | New | MS-22/NL | Semiconductor |
Carbon monoxide (CO) |
(TWA/STEL) 20/100/(300) |
ppm |
System powered | F | |
| DG-A31/N | New | MS-31/N | Semiconductor |
Organic compounds |
20/40/(50) |
%LEL |
System powered | F | |
| DG-A41/N | New | MS-41/N | Semiconductor |
Ammonia (NH3) |
500/1500/(2000) |
ppm |
System powered | F | |
| DG-A61/N | New | MS-61/N | Semiconductor |
Refrigerant R32 or Refrigerant R410A |
1000/2000/(2500) |
ppm |
System powered | F | |
| DG-A71/N | New | MS-71/N | Semiconductor |
Acetylene (C2H2) or Hydrogen (H2) |
10/30/(40) |
%LEL |
System powered | F | |
| DG-A73/N | New | MS-73/N | Semiconductor |
Hydrogen (H2) |
10/30/(40) |
%LEL |
System powered | F | |
| Model | Gas sensor module | Sensor | Substance/property | Standard alarm thresholds or measuring range | Supply voltage | Contact control outputs | Voltage control outputs 12VDC | Two-state outputs (threshold) | Control output "Fault" | Output controlling the shut-off valve | Output in 4-20mA standard | Output in 0-10V standard | Output in 2-10V standard | Output in RS-485 standard | Visual signalling, built-in | Acoustic signaling, built-in | Internal battery | Dimensions | Net price | C.g. | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DG-A12/N | New | MS-12/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | PLN769.00 | N |
| DG-A14/N | New | MS-14/N | Semiconductor |
Methane (CH4) |
10/30/(40) |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | PLN769.00 | N |
| DG-A15/N | New | MS-15/N | Semiconductor |
Liquefied petroleum gas (LPG) |
10/30/(40) |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | PLN769.00 | N |
| DG-A22L/N | New | MS-22/NL | Semiconductor |
Carbon monoxide (CO) |
(TWA/STEL) 20/100/(300) |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | F | |
| DG-A31/N | New | MS-31/N | Semiconductor |
Organic compounds |
20/40/(50) |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | F | |
| DG-A41/N | New | MS-41/N | Semiconductor |
Ammonia (NH3) |
500/1500/(2000) |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | F | |
| DG-A61/N | New | MS-61/N | Semiconductor |
Refrigerant R32 or Refrigerant R410A |
1000/2000/(2500) |
ppm |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | F | |
| DG-A71/N | New | MS-71/N | Semiconductor |
Acetylene (C2H2) or Hydrogen (H2) |
10/30/(40) |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | F | |
| DG-A73/N | New | MS-73/N | Semiconductor |
Hydrogen (H2) |
10/30/(40) |
%LEL |
System powered | — | — | 2 | — | — | ✓ | — | — | — | — | — | — | 110 x 153 x 60 mm | F | |
Suggested products
Splash-proof enclosures AP-1
Tubular shields AR-1
Gas test sets GTS