Concentration-measuring gas detectors DG/PV
Concentration measurement and detection devices for toxic and combustible gases (also oxygen and refrigerants) with splash-proof construction, active current output 4-20 mA and voltage output 2-10 V DC (for compatibility with non-Gazex systems)
DG/PV are designed to measure and monitor dangerous concentrations of toxic and explosive gases (and oxygen) in the air in enclosed industrial spaces. They have an interchangeable module with a measuring sensor.
They are designed to cooperate with control units (systems) of various manufacturers requiring detectors with active current output 4-20 mA or voltage output 2-10 V.
DG/PV detectors have a standard casing and cannot be used in areas classified as explosive gas, vapor or dust zones.
(Note: DG/PV detectors are not intended for use with MDP, MDA or MDD type modules).
Features
- interchangeable gas sensor;
- 2 outputs: current in standard 4-20 mA (active, i.e. emitting current) and voltage 2-10 V;
- built-in signaling of exceeding the measuring and temperature range, operating time counter, history of emergency states and signalling the end of calibration;
- thermal compensation system (can be used under changing environmental conditions);
- short detector response time;
- built-in optical signalling (2 LED lights);
- removable terminals with the possibility of embedding single and multi wire conductors (without crimping the sleeves);
- splash-proof gas sensor cover IP44 (in recommended mounting position);
- additional mechanical shield made of profiled tubes available - type AR-1d (installation in zones exposed to mechanical damage, e.g. warehouses, wholesalers, parking lots);
- possibility of being equipped with an enclosure to be placed on a ventilation duct (option DG/w);
- sensor modules for DG/PV and DG/P are interchangeable (different modules can be used for the same DG/PV body) – however, the installation conditions for individual gas must be taken into account;
- 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 | Gas sensor module | Sensor | Substance/property | Standard alarm thresholds | Measuring range | Unit | Supply voltage | Net price | C.g. | |
|---|---|---|---|---|---|---|---|---|---|---|
| DG-PV1KL | MS-1KL/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
24 V DC | PLN1,199.00 | N | |
| DG-PV1KL4 | MS-1KL4/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
24 V DC | PLN1,099.00 | N | |
| DG-PV1KL5 | MS-1KL5/N | Catalytic |
Liquefied petroleum gas (LPG) |
10/30/50 |
10—50 |
%LEL |
24 V DC | PLN1,099.00 | N | |
| DG-PV7KL3 | MS-7KL3/N | Catalytic |
Hydrogen (H2) |
10/30/50 |
10—50 |
%LEL |
24 V DC | PLN1,099.00 | N | |
| DG-PV0E.CL2 | MS-0E.CL2/N | Electrochemical |
Chlorine (Cl2) |
1/3/5 |
1—10 |
ppm |
24 V DC | PLN1,449.00 | N | |
| DG-PV0E.CLO2 | MS-0E.CLO2/N | Electrochemical |
Chlorine dioxide (ClO2) |
0,1/0,3/0,5 |
0—1 |
ppm |
24 V DC | PLN2,449.00 | N | |
| DG-PV0E.ETO | MS-0E.ETO/N | Electrochemical |
Ethylene oxide (C2H4O) |
2/5/10 |
2—20 |
ppm |
24 V DC | PLN1,449.00 | N | |
| DG-PV0E.HCL | MS-0E.HCL/N | Electrochemical |
Hydrogen chloride (HCl) |
3,4/6,8/10 |
3—10 |
ppm |
24 V DC | PLN1,949.00 | N | |
| DG-PV0E.NO2 | MS-0E.NO2/N | Electrochemical |
Nitrogen dioxide (NO2) |
1/3/5 |
1—30 |
ppm |
24 V DC | PLN1,449.00 | N | |
| DG-PV0E.O3 | MS-0E.O3/N | Electrochemical |
Ozone (O3) |
0,2/0,3/0,5 |
0—1 |
ppm |
24 V DC | PLN1,949.00 | N | |
| DG-PV0E.SO2 | MS-0E.SO2/N | Electrochemical |
Sulfur dioxide (SO2) |
0,5/1/5 |
1—20 |
ppm |
24 V DC | PLN1,449.00 | N | |
| DG-PV2E | MS-2E/N | Electrochemical |
Carbon monoxide (CO) |
20/100/200 |
20—500 |
ppm |
24 V DC | PLN1,199.00 | N | |
| DG-PV4E | MS-4E/N | Electrochemical |
Ammonia (NH3) |
500/800/800 |
300—1000 |
ppm |
24 V DC | PLN1,199.00 | N | |
| DG-PV4E1 | MS-4E/N1 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
24 V DC | PLN1,199.00 | N | |
| DG-PV4E2 | MS-4E/N2 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
24 V DC | PLN1,469.00 | N | |
| DG-PV5E | MS-5E/N | Electrochemical |
Hydrogen sulfide (H2S) |
5/10/20 |
5—100 |
ppm |
24 V DC | PLN1,199.00 | N | |
| DG-PV7E | MS-7E/N | Electrochemical |
Hydrogen (H2) |
500/800/1000 |
500—2000 |
ppm |
24 V DC | PLN1,199.00 | N | |
| DG-PV9E5 | MS-9E5/N | Electrochemical |
Oxygen (O2) |
19/18/17 |
2—25 |
%v/v |
24 V DC | PLN1,199.00 | N | |
| DG-PV1R2 | MS-1R2/N | Infra-red |
Methane (CH4) |
10/30/50 |
5—50 |
%LEL |
24 V DC | PLN1,999.00 | N | |
| DG-PV1R5 | MS-1R5/N | Infra-red |
Liquefied petroleum gas (LPG) |
10/30/50 |
5—50 |
%LEL |
24 V DC | PLN1,999.00 | N | |
| DG-PV3R | MS-3R/N | Infra-red |
Organic compounds |
20/40/50 |
10—50 |
%LEL |
24 V DC | PLN2,199.00 | N | |
| DG-PV6R7 | MS-6R7/N | Infra-red |
R32 or R410A |
500/1500/2000 |
500—2000 |
ppm |
24 V DC | F | ||
| DG-PV6R7-SF6 | MS-6R7/N-SF6 | Infra-red |
Sulfur hexafluoride (SF6) |
500/1500/2000 |
500—2000 |
ppm |
24 V DC | F | ||
| DG-PV8R | MS-8R/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—5 |
%v/v |
24 V DC | PLN1,999.00 | N | |
| DG-PV8R8 | MS-8R8/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—2 |
%v/v |
24 V DC | PLN1,449.00 | N | |
| Model | Gas sensor module | Sensor | Substance/property | Standard alarm thresholds | Measuring range | Unit | 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-PV1KL | MS-1KL/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | — | PLN1,199.00 | N | |
| DG-PV1KL4 | MS-1KL4/N | Catalytic |
Methane (CH4) |
10/30/50 |
10—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | — | PLN1,099.00 | N | |
| DG-PV1KL5 | MS-1KL5/N | Catalytic |
Liquefied petroleum gas (LPG) |
10/30/50 |
10—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | — | PLN1,099.00 | N | |
| DG-PV7KL3 | MS-7KL3/N | Catalytic |
Hydrogen (H2) |
10/30/50 |
10—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | — | PLN1,099.00 | N | |
| DG-PV0E.CL2 | MS-0E.CL2/N | Electrochemical |
Chlorine (Cl2) |
1/3/5 |
1—10 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | N | |
| DG-PV0E.CLO2 | MS-0E.CLO2/N | Electrochemical |
Chlorine dioxide (ClO2) |
0,1/0,3/0,5 |
0—1 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN2,449.00 | N | |
| DG-PV0E.ETO | MS-0E.ETO/N | Electrochemical |
Ethylene oxide (C2H4O) |
2/5/10 |
2—20 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | N | |
| DG-PV0E.HCL | MS-0E.HCL/N | Electrochemical |
Hydrogen chloride (HCl) |
3,4/6,8/10 |
3—10 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,949.00 | N | |
| DG-PV0E.NO2 | MS-0E.NO2/N | Electrochemical |
Nitrogen dioxide (NO2) |
1/3/5 |
1—30 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | N | |
| DG-PV0E.O3 | MS-0E.O3/N | Electrochemical |
Ozone (O3) |
0,2/0,3/0,5 |
0—1 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,949.00 | N | |
| DG-PV0E.SO2 | MS-0E.SO2/N | Electrochemical |
Sulfur dioxide (SO2) |
0,5/1/5 |
1—20 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | N | |
| DG-PV2E | MS-2E/N | Electrochemical |
Carbon monoxide (CO) |
20/100/200 |
20—500 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | N | |
| DG-PV4E | MS-4E/N | Electrochemical |
Ammonia (NH3) |
500/800/800 |
300—1000 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | N | |
| DG-PV4E1 | MS-4E/N1 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | N | |
| DG-PV4E2 | MS-4E/N2 | Electrochemical |
Ammonia (NH3) |
20/40/60 |
5—100 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,469.00 | N | |
| DG-PV5E | MS-5E/N | Electrochemical |
Hydrogen sulfide (H2S) |
5/10/20 |
5—100 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | N | |
| DG-PV7E | MS-7E/N | Electrochemical |
Hydrogen (H2) |
500/800/1000 |
500—2000 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,199.00 | N | |
| DG-PV9E5 | MS-9E5/N | Electrochemical |
Oxygen (O2) |
19/18/17 |
2—25 |
%v/v |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | — | PLN1,199.00 | N | |
| DG-PV1R2 | MS-1R2/N | Infra-red |
Methane (CH4) |
10/30/50 |
5—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,999.00 | N | |
| DG-PV1R5 | MS-1R5/N | Infra-red |
Liquefied petroleum gas (LPG) |
10/30/50 |
5—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,999.00 | N | |
| DG-PV3R | MS-3R/N | Infra-red |
Organic compounds |
20/40/50 |
10—50 |
%LEL |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN2,199.00 | N | |
| DG-PV6R7 | MS-6R7/N | Infra-red |
R32 or R410A |
500/1500/2000 |
500—2000 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | F | ||
| DG-PV6R7-SF6 | MS-6R7/N-SF6 | Infra-red |
Sulfur hexafluoride (SF6) |
500/1500/2000 |
500—2000 |
ppm |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | F | ||
| DG-PV8R | MS-8R/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—5 |
%v/v |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,999.00 | N | |
| DG-PV8R8 | MS-8R8/N | Infra-red |
Carbon dioxide (CO2) |
0,5/1,5/2 |
0—2 |
%v/v |
24 V DC | — | — | — | — | — | ✓ | — | ✓ | — | ✓ | — | — | 110 x 140 x 55 mm | PLN1,449.00 | N | |