Hot humid coast
The Coromandel coast is generally hot and humid with salt-laden air, which favours sealed, corrosion-resistant devices.
The city had an estimated GDP of 196.5 billion US dollars in 2024 and a diversified industrial base, and ranks among the top export districts in India. Refining, lube and wax production and LNG handling create Zone 1 areas. If you are specifying an IECEx mobile phone for Chennai (Manali and Ennore industrial area), this page covers the markings, the approvals and the current certification status of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Chennai (Manali and Ennore industrial area): pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
For the record, no certificate exists for the IS-04Z1 today. The programme is under way ahead of a Q4 2026 launch. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Certificate of conformity | Number checkable on the IECEx online register | In progress; not issued |
| Standards edition | The IEC 60079 edition the certificate cites | Stated on the certificate when issued |
| Schedule of conditions | Limits of use, batteries and accessories | Published with the certificate |
| Where it applies | Chennai (Manali and Ennore industrial area): LNG regasification, Refinery process units, Lube base stock and wax plants | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Chennai India. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
The companies on site and the hazardous-area types a handset is likely to meet there.
The Coromandel coast is generally hot and humid with salt-laden air, which favours sealed, corrosion-resistant devices.
CPCL's Manali refinery is rated at 10.5 million tonnes a year and includes crude distillation, hydrocracker, FCC, delayed coker and reforming units, plus lube and wax production.
Chennai Petroleum acts as a mother industry for Manali, supplying feedstocks to neighbouring plants, and its products are marketed through Indian Oil, which is now its majority shareholder.
Most rain comes from the northeast monsoon between October and December, when cyclones are common and flooding of low-lying areas can occur, with about 120 centimetres a year.
A propylene plant of 17,000 tonnes a year, commissioned in 1988, and a 30,000 tonne a year paraffin wax plant add petrochemical and wax operations to the fuel refinery.
The Manali refinery of Chennai Petroleum Corporation has a capacity of 10.5 million tonnes a year and is one of India's most complex refineries, with fuel, lube, wax and petrochemical feedstock units.
IECEx is the international scheme for certifying equipment used in explosive atmospheres. A certificate of conformity is issued by an accredited certification body against a specific edition of the IEC 60079 standards and carries a schedule of conditions of safe use. It is not a legal requirement in most countries on its own, but many national schemes accept it as the technical basis.
The IECEx certificate for the IS-04Z1 is in progress and has not been issued. The marking target is Ex ib IIC T4, the intrinsic safety concept for Zone 1 gas with the hardest gas group (IIC) and a 135 °C temperature class.
In Chennai (Manali and Ennore industrial area). Work around Manali and Ennore draws EPC and specialist contractors who already carry international scheme documents. The IECEx certificate of conformity, with its schedule of conditions, is the document such contractors compare across sites. SAMS is pursuing IECEx for the IS-04Z1, and no certificate exists yet.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
No price is published. While certification is in progress there is no list price and no committed lead time, and a supplier quoting a firm figure for an uncertified Ex handset is promising something it cannot stand behind. Indicative pre-launch pricing is issued in writing against a stated quantity and site.
No. The IECEx certificate is in progress and has not been issued. SAMS will publish the number when it exists.
Likely candidates are refinery process units, lube base stock and wax plants, crude and product storage, marine liquid terminal. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Not exactly. Explosion proof is a broad everyday term; intrinsic safety is one protection concept, which limits energy so ignition cannot occur. Flameproof (Ex d) is a different concept that contains an explosion. The IS-04Z1 is intrinsically safe by design.
A refinery and petrochemical complex has process units, tank farms, loading gantries and feedstock lines, all with classified areas set by the operators. Confirm each operator's area classification and accepted equipment approvals before a visit.
Most rain and cyclones arrive between October and December, and low-lying areas can flood. Plan equipment deliveries and shutdown work outside that window where possible, and keep devices in sealed cases during transport.
Salt-laden humid air accelerates corrosion on ports, seals and contacts. An IP68 sealed design helps, and rinsing and routine inspection of seals remain good practice. Battery life also depends on heat. Ask the site's inspection team what cleaning and storage routines they expect for portable equipment.
Other guides for Chennai India, other places in India, and the pages behind them.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.