Scale
Fortune Indonesia lists Cilacap as the largest Pertamina refinery and reports it supplies about a third of national fuel demand.
Cilacap, on the south coast of Central Java, has Pertamina's Refinery Unit IV, the largest in Indonesia at 348,000 barrels per day. Crude distillation, cracking and storage areas are Zone 1 environments. This page explains what to look for in an industrial mobile phone for Cilacap Refinery, Central Java, 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 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. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Ingress protection | IP rating for dust and water | IP68 design |
| Fleet management | EMM and MDM support | Android 16 with EMM and MDM |
| Explosion protection | A separate certificate and marking | In progress; not issued |
| 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.
The companies on site and the hazardous-area types a handset is likely to meet there.
Fortune Indonesia lists Cilacap as the largest Pertamina refinery and reports it supplies about a third of national fuel demand.
Sources quote 345,000 to 348,000 barrels per day, so check the current rating with the operator.
As part of modernisation, Pertamina is improving management of more than 85,000 maintainable assets at RU IV, starting with a maintenance master data project to classify every item correctly.
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.
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.
“Industrial” describes a phone built for plant conditions: sealed, drop-resistant and manageable at fleet scale through Android Enterprise. It does not by itself mean the phone may enter a classified area. Only a device with a valid explosion-protection certificate and marking may do that.
The IS-04Z1 is designed to be both an industrial Android phone (IP68, 4,000 mAh battery, 50 MP camera, Android 16 with EMM and MDM support) and an intrinsically safe one. Its explosion-protection certificates are in progress and have not been issued.
In Cilacap Refinery, Central Java. A refinery supplying about a third of national fuel demand runs a large workforce and many contractors. A device fleet would need MDM or EMM enrolment, clear asset ownership and a charging point in a safe area. Radio coverage across a large site should be checked first.
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.
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.
Yes by design: IP68 sealing, a 4,000 mAh battery, a 50 MP camera and Android 16 with EMM and MDM support. The explosion-protection certificates are separate and still in progress.
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.
Name the site and the operator and we will send what is available before launch.