PTT: projects and investment
In 2012 PTT Exploration and Production took over Cove Energy, which held an 8.5% share in a large offshore natural gas field in Mozambique, extending PTT's offshore gas work abroad.
PTT · intrinsically safe
Intrinsically Safe Mobile Phone Supplier for PTT
PTT is Thailand's state-controlled national energy company, with the Ministry of Finance holding 51.1%. Affiliated companies include PTT Exploration and Production, PTT Global Chemical and PTT Green Energy, so upstream, petrochemical and power sites each have their own operating teams and procurement. Buyers searching for an intrinsically safe mobile phone supplier for PTT can take the datasheet and the certification schedule for the IS-04Z1 now; supply follows certification.
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 topicintrinsically safe
DeviceMobile Phone
RouteSupply
WherePTT
Short answer. An intrinsically safe mobile phone for PTT cannot be bought yet: the SAMS IS-04Z1 is pre-launch (certification in progress, no certificate issued), and the datasheet, certification schedule and safe-area evaluation units are available now.
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.
At a glance · intrinsically safe
Checklist: intrinsically safe mobile phone for PTT
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | PTT: LPG terminals, Group refineries and petrochemical units, Gas separation plants | 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 organisation · PTT
PTT Public Company Limited: operations and where an Ex phone fits
A short profile of its operations and the kinds of classified area that matter for portable equipment.
Sites and areas
- Map Ta Phut, Rayong
- Gulf of Thailand gas pipelines
Classified areas
- Gas separation plants
- Gas pipelines and receiving facilities
- LPG terminals
- Group refineries and petrochemical units
Supplier approval · PTT
Becoming an approved supplier to PTT
Supplier registration and equipment approval are run by the organisation itself; confirm current requirements with its procurement and HSE teams. The Ex certificate and an organisation's own vendor or engineering approval are two separate timelines; SAMS is working towards both and holds neither today.
Field notes · PTT
More about PTT that matters for portable equipment
PTT: background
PTT was established on 29 December 1978 as the Petroleum Authority of Thailand, and was corporatised and re-registered as PTT Public Company Limited on 1 October 2001, listing on the Stock Exchange of Thailand that December.
PTT: geography and layout
The headquarters is on Vibhavadi Rangsit Road in Chatuchak, Bangkok, while its key assets are offshore in the Gulf of Thailand and at industrial sites, so site contacts are separate from head office.
PTT: industry on the ground
PTT opened the Bangchak oil refinery in Bangkok in 1985 and built a nationwide network of fuel distribution outlets, adding refinery and retail forecourt areas to its estate.
The term · intrinsically safe
What “intrinsically safe” means for a smartphone
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In PTT. Rounds at gas separation plants, receiving facilities and LPG terminals involve gauges, valves and checklists across large sites. A handheld designed for intrinsic safety could capture readings, photos and calls in classified spots if its certificate allows. Permit rules at Map Ta Phut in Rayong belong to PTT and its group companies.
The route · supply
Sourcing the IS-04Z1 for PTT
Supply of the IS-04Z1 to PTT starts only after certification, through authorised distributors. Until then a buyer can request the datasheet and the written certification schedule, and arrange a safe-area evaluation unit, which puts the site on the list for the right local channel at launch.
- 01
Request the datasheet
The technical specification, marking target and conditions of use, sent by email.
- 02
Ask for the certification schedule
Which certificates are in progress, in what order, and what is still to be confirmed.
- 03
Evaluate in a safe area
Evaluation units can be used for connectivity, MDM enrolment and workflow testing outside classified areas.
- 04
Register for launch
Tell us the site, zone, gas group and quantity so the right authorised distributor can contact you.
Questions · PTT
Frequently asked questions
Can PTT buy the IS-04Z1 today?
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.
What does an intrinsically safe mobile phone for PTT cost?
There is no list price yet. SAMS gives indicative pre-launch pricing in writing, against a stated quantity and site, and does not commit to a lead time before certification completes.
What does ‘intrinsically safe’ mean for the IS-04Z1?
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
How does PTT approve suppliers?
Supplier registration and equipment approval are run by the organisation itself; confirm current requirements with its procurement and HSE teams.
How will SAMS supply PTT?
Through authorised distributors once certificates exist. Until then SAMS can send the datasheet and certification schedule and arrange safe-area evaluation units.
What language is expected for training and documents in Thailand?
Thai is the working language for site staff, while English is commonly used in engineering and international projects. Manuals and training for hazardous-area devices are therefore often expected in Thai and English. Confirm the required languages with the relevant PTT group company.
How does Thailand's tropical climate affect phones in the field?
Gulf of Thailand and Rayong-area sites are hot and humid with heavy monsoon rain and salty air, which stresses seals, connectors and batteries. Look for high ingress protection, corrosion resistance and a suitable temperature rating, and ask the site about its own environmental limits.
Would the phone cope with humid monsoon conditions at Map Ta Phut?
The IS-04Z1 is IP68 rated against dust and water, which helps with rain and humidity. Temperature and humidity limits will be set by the final certificate and datasheet, so check them. IP68 is not explosion protection. Certification is in progress and nothing has been issued.
Related guides
Keep exploring
More on PTT, and on other places in Thailand.
IECEx Mobile Phone Supplier for PTTSame place, different guide
Explosion-Proof Mobile Phone Supplier for PTTSame place, different guide
ATEX and IECEx Mobile Phone for PTTSame place, different guide
Intrinsically Safe Mobile Phone for PTTSame place, different guide
Thailand market guideCertification route and regulators
All guides for ThailandEvery route we cover
Certification statusWhat is in progress
Enquiry · PTT
Ask about the IS-04Z1 for PTT, 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 · PTT
Launching Q4 2026
Planning for PTT?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.