Climate
Hot, humid tropical conditions with a heavy rainy season.
Refinery Unit IV is in Central Java and plays a critical role in meeting domestic fuel and petrochemical needs for the island, which makes shutdowns carefully planned events. Crude distillation, cracking and storage areas are Zone 1 environments. If you are specifying an IECEx smartphone for Cilacap Refinery, Central Java, 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 Cilacap Refinery, Central Java: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Current position: certification in progress, nothing issued, launch targeted 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 |
|---|---|---|
| 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 | Cilacap Refinery, Central Java: Refinery process units, Crude and product tank farms, Marine loading facilities | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Cilacap Refinery. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
A short profile of the site and the kinds of classified area that matter for portable equipment.
Hot, humid tropical conditions with a heavy rainy season.
Fortune Indonesia lists Cilacap as the largest Pertamina refinery and reports it supplies about a third of national fuel demand.
The unit makes gasoline, diesel, kerosene, aviation fuel and LPG, and also asphalt and petrochemicals, so it combines liquid fuel, pressurised LPG and petrochemical hazardous areas in one complex.
Indonesia remained a net importer of petroleum products in 2024, at about 787 thousand barrels a day or 42 percent of consumption, which keeps pressure on large refineries such as Cilacap to run reliably.
Cilacap is Indonesia's largest refinery at about 348 thousand barrels a day, ahead of Balikpapan, Dumai, Musi, Balongan and Tuban, which together made up the national refining capacity of 1.15 million barrels a day at the end of 2024.
Cilacap's port is one of only a few on Java's southern coast able to handle ships of reasonable tonnage, sheltered by Nusakambangan island, and Tunggul Wulung Airport offers scheduled flights to Jakarta and Semarang.
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 Cilacap Refinery, Central Java. For a refinery of this size, outside contractors and turnaround specialists often know the IECEx scheme. A certificate of conformity with a schedule of conditions would be the shared document. For the IS-04Z1 these are targets and not yet issued, so they cannot support a purchase today.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
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.
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.
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, crude and product tank farms, marine loading facilities. 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.
The complex processes crude into gasoline, diesel, kerosene, aviation fuel and LPG, plus asphalt and petrochemicals. Flammable vapour from light products and pressurised LPG are the usual concerns, but the plant defines its zones, so ask for the current classification.
With more than 85,000 maintainable assets and an ongoing safety-critical-element review, the refinery is formalising what is classified and how it is maintained. That usually means device approvals and area classification records are checked closely, so bring documentation.
The climate is hot and humid with a heavy rainy season, so devices on tank farms and jetties meet rain often. Check sealing and charging arrangements. Rain protection is separate from explosion protection, so confirm the permitted device list with the operator.
Related guides for Cilacap Refinery and for Indonesia.
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.