Threshold gas detectors DEX/A
ATEX compliant, threshold detectors of toxic and combustible gases (also oxygen and Freon HFC) with 4-20mA connectivity
DEX/A detectors are designed to detect dangerous concentrations of explosive gases indoors. They signal exceeding of two alarm thresholds (A1, A2) set in a replaceable sensor module (thresholds set at the production stage). They have a 3-wire interface type 4-20mA (passive).
DEX/A detectors are compatible with MDP or MDA type alarm modules. They can also work with any other control panels accepting the 4-20mA input line standard (and passive devices), after using the MDPL1 type power limiter (optional).
All detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with 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 | ||
|---|---|---|---|---|---|---|---|---|---|
| DEX-A12/N | MS-12/N | Semiconductor |
Methane (CH4) |
10/30 |
%LEL |
System powered | 799.00 zł | N | |
| DEX-A14/N | MS-14/N | Semiconductor |
Methane (CH4) |
10/30 |
%LEL |
System powered | 799.00 zł | N | |
| DEX-A15/N | MS-15/N | Semiconductor |
Liquefied petroleum gas (LPG) |
10/30 |
%LEL |
System powered | 799.00 zł | N | |
| DEX-A31/N | MS-31/N-X | Semiconductor |
Volatile organic compounds (VOC) |
20/40 |
%LEL |
System powered | N | ||
| DEX-A71/N | MS-71/N | Semiconductor |
Acetylene (C2H2) or Hydrogen (H2) |
10/30 |
%LEL |
System powered | N | ||
| DEX-A72/N | MS-72/N-X | Semiconductor |
Hydrogen (H2) |
20/40 |
%LEL |
System powered | 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.
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