Port Arthur nearby
Port Arthur, about 90 miles east of Houston, hosts Motiva's refinery and a Valero refinery within the same metro area.
The city has a humid subtropical climate with more than 65 inches of rain a year, a wet season from April to October, and a recurring hurricane threat, so equipment is exposed to wet and humid conditions. ExxonMobil's refinery and chemical complex is the city's largest private employer, with Zone 1 areas at process units and crackers. This page explains what to look for in an Ex-proof smartphone for Beaumont, Texas, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Beaumont, Texas: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Status: pre-launch. IECEx, ATEX, UKEX and NEC 500 certification is in progress and no certificate has been issued; launch is planned for Q4 2026. 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 |
|---|---|---|
| Ex marking | Group, category, protection concept, gas group, temperature class | II 2 G Ex ib IIC T4 (target) |
| Gas group | IIA, IIB or IIC matched to the area drawing | IIC (target) |
| Temperature class | T-class below the ignition temperature of the gas | T4, 135 °C (target) |
| Where it applies | Beaumont, Texas: Refinery process units, Ethylene cracking units, Lubricants plant | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Beaumont Texas. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Port Arthur, about 90 miles east of Houston, hosts Motiva's refinery and a Valero refinery within the same metro area.
The refinery is reported at over 600,000 barrels a day after a 250,000 barrel a day crude unit expansion, with ethylene capacity of 816,000 tons a year on site.
Beaumont lies on the Neches River about 30 miles inland from the Gulf and 85 miles east of Houston, on flat ground only around 16 feet above sea level.
The Port of Beaumont, on the Neches River, is one of the largest seaports in the United States by tonnage, which keeps tanker and bulk traffic constant along the waterfront.
The complex dates from 1903 on the Neches River and today makes plastics, synthetic rubber and lubricants, with a separate polyethylene plant and a lubes plant packing hundreds of products.
ExxonMobil's Beaumont page points residents to the Southeast Texas Alerting Network for emergency alerts and notices, a local channel worth knowing about when working in the area.
“Ex-proof” is shorthand for equipment carrying an explosion-protection marking (the Ex mark) that matches the area it enters. The marking states the protection concept, gas or dust group and temperature class, and it must be backed by a certificate issued by a recognised body, so a phone described as Ex-proof should come with a certificate number you can check.
The IS-04Z1 is designed to carry the marking II 2 G Ex ib IIC T4. That is a target: certification is in progress, no certificate has been issued, and SAMS will publish the certificate numbers when they exist.
In Beaumont, Texas. A marking check at an ethylene site would consider hydrogen and ethylene, so IIC marking is conservative, while lubricants and fuel areas may sit in lower gas groups. The operator's classification governs. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, pending certification, and should be compared with it.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Not yet. The IS-04Z1 is pre-launch and its certification is still in progress ahead of a Q4 2026 launch. No unit goes into a classified area before the certificate covering it exists. The datasheet, the certification schedule and safe-area evaluation units are available now.
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.
The marking target is II 2 G Ex ib IIC T4. It becomes a marking only when the certificate is issued; until then it is a design target.
Likely candidates are refinery process units, ethylene cracking units, lubricants plant, marine terminals. 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.
US plants usually follow the National Electrical Code, which offers a Class and Division system and a Zone system. Which one applies is set by the site's area classification drawings, so ask the operator's safety or electrical team before choosing equipment.
The area has been hit by several hurricanes and tropical storms in recent years, so many operators keep spare equipment and plan storm shutdowns. It is sensible to hold spares and chargers off-site and agree replacement lead times in advance.
A name for the Beaumont, Port Arthur and Orange area, where the 1901 Spindletop discovery began a large refining and petrochemical cluster. The definition was not explicitly confirmed by every source checked. Confirm with the site operator which plants and areas a given task covers.
More on Beaumont Texas, and on other places in United States.
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.