# Hazardous Locations

Hazardous Locations (HazLoc) are places with a potentially explosive atmosphere due to the presence of gases, vapors, dust, or a mixture of them. The electrical and electronic equipment installed in Hazardous Locations can be the source of ignition. For such reason, standards and regulations exist to identify these locations, classify the hazards, and safely design the operating equipment. 

Applicable regulations depend on the site and country of operation. Said regulations guide whether equipment can be used based on a Hazardous Area Classification (HAC). Internationally, the classification is made by the [International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres](https://www.iecex.com/) (IECEx System). 

The ATEX [Directive 2014/34/EU](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014L0034\&locale=en) covers equipment and protective systems intended for use in potentially explosive atmospheres in the European Union (EU). The directive defines the essential health and safety requirements and conformity assessment procedures, to be applied before products are placed on the EU market. For North America, the FM approvals is used for the device's certification. 

The following table provides an overview of the ATEX/IECEx and the FM rating for each product type and variation of the NEON product line. For more information please refer to the [datasheets](https://github.com/TWTG-R-D-B-V/neon-product-documentation/tree/main) of each product. 

<table><thead><tr><th width="145">Product type</th><th width="114">Variation</th><th width="148">ATEX/IECEx rating</th><th>FM rating</th><th>Temperature rating</th></tr></thead><tbody><tr><td>Pressure Gauge (PG)</td><td>DS-RT-PG-02-00</td><td>Ex II 1G Ex ia IIC T4 Ga</td><td>IS Class I, Division 1, Group ABCD T4<br>Class I, Zone 0 AEX/Ex ia IIC T4 Ga</td><td>-40 °C ... 70 °C</td></tr><tr><td>Pressure Sensor (PS)</td><td>DS-RT-PS-02-00</td><td>Ex II 1G Ex ia IIC T4 Ga</td><td>IS Class I, Division 1, Group ABCD T4<br>Class I, Zone 0 AEX/Ex ia IIC T4 Ga</td><td>-40 °C ... 70 °C</td></tr><tr><td>Temperature Sensor (TS)</td><td>All TS devices</td><td>Ex II 2G Ex ia IIB T4 Gb</td><td>Class I Division 1, Groups C, D;<br>Zone 1, Ex ia IIB T4 Gb Ta</td><td>-40 °C ... 80 °C</td></tr><tr><td>Temperature Transmitter (TT)</td><td>DS-TT-01-xx </td><td>Ex II 2G Ex ib IIC T4 Gb</td><td>NA</td><td>-40 °C ... 80 °C</td></tr><tr><td></td><td>DS-TT-02-xx</td><td>Ex II 1G Ex ia IIC T4 Ga</td><td>IS Class I, Division 1, Group ABCD T4<br>Class I, Zone 0 AEX/Ex ia IIC T4 Ga</td><td>-40 °C ... 70 °C</td></tr><tr><td>Vibration Sensor (VB)</td><td>DS-LD-01-xx with DS-VB-01-xx </td><td>Ex II 2G Ex ib IIC T4 Gb</td><td>NA</td><td>-40 °C ... 80 °C</td></tr><tr><td></td><td>DS-LD-02-00 with DS-VB-02-00</td><td>Ex II 1G Ex ia IIC T4 Ga</td><td>IS Class I, Division 1, Group ABCD T4<br>Class I, Zone 0 AEX/Ex ia IIC T4 Ga</td><td>Sensor: -40 °C ... 80 °C<br>Transmitter: -40 °C ... 70 °C</td></tr><tr><td>Contact Sensor (VS-CS)</td><td>All VS-CS devices</td><td>Ex II 2G Ex ia IIB T4 Gb</td><td>Class I Division 1, Groups C, D;<br>Zone 1, Ex ia IIB T4 Gb Ta</td><td>-40 °C ... 80 °C</td></tr><tr><td>Valve Sensor - Multiturn (VS-MT)</td><td>All VS-MT devices</td><td>Ex II 2G Ex ia IIB T4 Gb</td><td>Class I Division 1, Groups C, D;<br>Zone 1, Ex ia IIB T4 Gb Ta</td><td>-40 °C ... 80 °C</td></tr><tr><td>Valve Sensor - Quarter Turn (VS-QT)</td><td>All VS-QT devices</td><td>Ex II 2G Ex ia IIB T4 Gb</td><td>Class I Division 1, Groups C, D;<br>Zone 1, Ex ia IIB T4 Gb Ta</td><td>-40 °C ... 80 °C</td></tr></tbody></table>


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