Threshold gas detectors DEX/F

DEX/F detectors are designed to detect the presence of dangerous concentrations of gases or vapours of explosive or toxic liquids or oxygen. They signal exceeding two alarm thresholds (A1, A2) set in an interchangeable sensor module (thresholds set at the production stage). They are designed to work only with control modules type MD.

The detectors meet the essential requirements of Directive 2014/34/EU (ATEX) of the European Parliament and of the Council of 26 February 2014, on the harmonization of the laws of the Member States relating to protective systems intended for use in potentially explosive atmospheres, implemented by the Regulation of the Minister of Development on requirements for equipment and protective systems intended for use in potentially explosive atmospheres of 6 June 2016. (Journal of Laws 2016 item 817).

The detectors are devices with explosion-proof construction of flameproof cover type and can be used in zones 1 or 2 threatened with explosion of flammable gases or vapors classified as explosiveness group IIA, IIB or IIC, temperature classes T1, T2, T3, T4, T5 or T6.

Features

  • detachable and interchangeable sensor unit guarantees easy maintenance and low cost operation;
  • easy change of detection gas or calibration of detector;
  • built in temperature compensation;
  • semiconductor or catalytic or infra-red sensor for combustible gases or electrochemical sensor for toxic gases or oxygen;
  • high temperature (up to +80°C) version available;
  • all detectors are calibrated in our own GAZEX Calibration Laboratory operating in accordance with PN-EN ISO/IEC 17025 (PCA accreditation No AP150).

Typical system configuration

Offered models

Model Gas sensor module Sensor Substance/property Standard alarm thresholds or measuring range Supply voltage Net price C/G
Ex MS-12/N Semiconductor Methane (CH4)
10/30
%LEL
System powered 789.00 zł S
Ex MS-14/N Semiconductor Methane (CH4)
10/30
%LEL
System powered 789.00 zł S
Ex MS-14/N Semiconductor Methane (CH4)
10/30
%LEL
System powered 1,299.00 zł N
Ex MS-15/N Semiconductor Liquefied petroleum gas (LPG)
10/30
%LEL
System powered 789.00 zł S
Ex MS-22/NL Semiconductor Carbon monoxide (CO)
20/100
ppm
System powered 809.00 zł N
Ex MS-31/N-X Semiconductor Volatile organic compounds (VOC)
20/40
%LEL
System powered 889.00 zł N
Ex MS-41/N-X Semiconductor Ammonia (NH3)
500/1500
ppm
System powered 849.00 zł N
Ex MS-61/N-X Semiconductor Hydrofluorocarbons (HFC)
1000/2000
ppm
System powered 849.00 zł N
Ex MS-71/N Semiconductor Acetylene (C2H2)
or Hydrogen (H2)
10/30
%LEL
System powered 849.00 zł N
Ex MS-72/N-X Semiconductor Hydrogen (H2)
20/40
%LEL
System powered 789.00 zł S
Ex MS-1K5/N Catalytic Liquefied petroleum gas (LPG)
10/30
%LEL
System powered 1,099.00 zł S
Ex MS-1K/N Catalytic Methane (CH4)
10/30
%LEL
System powered 999.00 zł S
Ex MS-3K/N Catalytic Volatile organic compounds (VOC)
20/40
%LEL
System powered 1,139.00 zł N
Ex MS-4K/N Catalytic Ammonia (NH3)
5/15
%LEL
System powered 1,099.00 zł N
Ex MS-7K/N Catalytic Acetylene (C2H2)
or Hydrogen (H2)
20/40
%LEL
System powered 999.00 zł N
Ex MS-2E/N Electrochemical Carbon monoxide (CO)
20/100
ppm
System powered 1,049.00 zł N
Ex MS-4E/N-X Electrochemical Ammonia (NH3)
500/800
ppm
System powered 1,149.00 zł N
Ex MS-7E/N Electrochemical Hydrogen (H2)
500/800
ppm
System powered 1,149.00 zł N
Ex MS-9E/N Electrochemical Oxygen (O2)
19/18
%v/v
System powered 1,049.00 zł S
Ex MS-1R2/N Infra-red Methane (CH4)
10/30
%LEL
System powered 1,849.00 zł S
Ex MS-1R5/N Infra-red Liquefied petroleum gas (LPG)
10/30
%LEL
System powered 1,849.00 zł S
Ex MS-3R/N-X Infra-red Volatile organic compounds (VOC)
20/40
%LEL
System powered 1,989.00 zł N
Ex MS-8R/N Infra-red Carbon dioxide (CO2)
0,5/1,5
%v/v
System powered 1,849.00 zł S

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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GTS
Test kits for checking the correct functioning of detectors