Thailand: logistics and access
Around 79.5% of crude oil supply is imported; domestic oil production peaked in 2016 at 486,000 barrels a day, so port, tank farm and pipeline terminals handle much of the flow.
Thailand · Ex-proof
Ex-Proof Mobile Phone in Thailand
A Zone 1 and Zone 21 handset for the people inside the Thai petrochemical cluster: shift operators on the Map Ta Phut crackers, reliability engineers at Sriracha, jetty and tank farm crews along the Rayong coast, and the safety and IT departments that rule on what passes a gate. This page explains what to look for in an Ex-proof mobile phone for Thailand, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Marking targetEx ib IIC T4Intrinsic safety, Zone 1 / 21 design target · certification in progress
AvailabilityQ4 2026via authorised distributors
Search topicEx-proof
DeviceMobile Phone
RouteSpecification
WhereThailand
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Thailand: 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. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · Ex-proof
Checklist: Ex-proof mobile phone for Thailand
| 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 | Thailand: Map Ta Phut Industrial Estate, Rayong industrial estates, Sriracha, Chonburi | Classified by the site operator |
Product · Thailand
The product behind this search: the SAMS IS-04Z1.
SAMS IS-04Z1
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Thailand. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
- IP68 sealed
- 4,000 mAh battery
- 50 MP camera
- Android 16
- Zone 1 / Zone 21 design target
The market · Thailand
Where this applies in Thailand
The classified areas, operators and sites below are the ones covered in the SAMS Thailand market guide.
Operators, EPCs and contractors
- PTT Global Chemical
- Olefins, aromatics and derivatives across the Map Ta Phut complex
- SCG Chemicals
- Crackers, polyolefin and downstream plants at Map Ta Phut
- IRPC
- Integrated refinery and petrochemical complex at Rayong
- Star Petroleum Refining
- Refinery and jetty operations at Map Ta Phut
- Thai Oil
- The refinery and downstream units at Sriracha, Chonburi
- ExxonMobil
- Refinery and chemical operations at Sriracha
Industrial areas and sites
- Map Ta Phut Industrial Estate
- The IEAT petrochemical estate: crackers, derivatives and the deep sea port
- Rayong industrial estates
- Asia, RIL, Hemaraj and the neighbouring estates around Map Ta Phut
- Sriracha, Chonburi
- Two refineries, lube plants and the associated tank farms
- Laem Chabang
- The container and bulk port, chemical berths and the industrial estate behind it
- Chachoengsao
- EEC industrial estates and the plants along the Bang Pakong corridor
- Gulf of Thailand
- Offshore production platforms, wellhead platforms and the supply bases
Field notes · Thailand
More about Thailand that matters for portable equipment
Thailand: industry on the ground
Map Ta Phut in Rayong, opened in 1990 and run by the Industrial Estate Authority of Thailand, is the largest industrial estate in the country, with 151 factories including petrochemical plants and refineries across about 166 square kilometres.
Thailand: infrastructure
The Erawan gas field in the Gulf of Thailand supplies about 20% of the country's gas production, which makes it an important reference point for offshore device and transport planning.
Thailand: logistics and access
Gas supply is topped up with LNG imports and pipeline gas from Myanmar (6.2 and 7.8 billion cubic metres respectively in 2018), so LNG regasification and receiving stations are part of the hazardous-area picture.
The term · Ex-proof
What “Ex-proof” means for a smartphone
“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 Thailand. A Thai marking check hinges on gas group: hydrogen at reformers and hydrotreaters, ethylene through the cracker network and acetylene during maintenance all sit within the same estates, so a device rated only to IIB is unusable across much of Map Ta Phut. The target Ex ib IIC T4 is read with Zone 21 evidence for polymer powder.
The route · specification
Specifying an Ex-proof mobile phone for Thailand
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Check on the paper
- Marking
- Equipment group, category, protection concept, gas group and temperature class, matched to the area drawing.
- Certificate and schedule
- A certificate number, issuing body and the schedule of conditions, not a brochure claim.
- Standards edition
- The IEC 60079 or national standard edition the certificate was issued against.
Check for the IS-04Z1
- Marking target
- II 2 G Ex ib IIC T4: a target, not yet a certificate.
- Certificate status
- IECEx, ATEX, UKEX and NEC 500 in progress; none issued.
- Operator approval
- Separate from the certificate and handled with the site operator.
Questions · Thailand
Frequently asked questions
Can we buy an Ex-proof mobile phone in Thailand today?
No. Nothing can be bought or taken into a classified area today: certification is in progress and launch is planned for Q4 2026. What is available now is the datasheet, the written certification schedule and evaluation units for safe-area use.
What does an Ex-proof mobile phone in Thailand cost?
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
What Ex marking will the IS-04Z1 carry?
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.
Which sites in Thailand does this cover?
The market guide for Thailand covers Map Ta Phut Industrial Estate, Rayong industrial estates, Sriracha, Chonburi, Laem Chabang, among others. Site-level pages are linked below.
Is intrinsically safe the same as explosion proof?
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.
Does Thailand's heat and humidity change how I choose an intrinsically safe phone?
Yes, because tropical heat and humidity put stress on batteries and seals. Check the maximum ambient rating on the certificate, the water and dust ingress rating and how the device behaves in direct sun. Spare batteries are typically worthwhile on long outdoor shifts.
Which part of Thailand has the most offshore hazardous-area work?
The Gulf of Thailand, with 34 active petroleum projects across 47 fields as of March 2024, including the Erawan field. Crew change and supply bases on the coast also hold classified areas. Confirm each platform's rules with its operator and helicopter or boat provider.
Is the IS-04Z1 suited to the Rayong monsoon?
IP68 sealing and a rugged build are the design floor for heavy rain on open pipe racks and humid heat. The certificate ambient range is the compliance figure and is still in progress. Test a unit in the wet season and confirm the range with the site.
Related guides
Keep exploring
More on Thailand, and on other places in Thailand.
Hazardous Area Mobile Phone in ThailandSame place, different guide
Intrinsically Safe Mobile Phone in ThailandSame place, different guide
Rugged Mobile Phone Supplier in ThailandSame place, different guide
Explosion-Proof Mobile Phone in ThailandSame place, different guide
ATEX and IECEx Mobile Phone Supplier in ThailandSame place, different guide
IECEx Mobile Phone Supplier in ThailandSame place, different guide
Thailand market guideCertification route and regulators
All guides for ThailandEvery route we cover
Certification statusWhat is in progress
Enquiry · Thailand
Ask about the IS-04Z1 for Thailand
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Enquiry · Thailand
Launching Q4 2026
Planning for Thailand?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.