Large concessions
Kaltim Prima holds a 90,960-hectare concession across Sangatta and Bengalon and moves coal on a 13-kilometre conveyor to its Tanjung Bara port.
Kalimantan hosts some of Indonesia's largest open-pit coal mines, including Kaltim Prima Coal at Sangatta in East Kalimantan and Adaro's Tutupan mine in South Kalimantan. Hazardous-area work centres on fuel storage, coal handling and preparation, and mine power plants. This page explains what to look for in an intrinsically safe smartphone for Kalimantan coal mining region, 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 Kalimantan coal mining region: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Where things stand: the IS-04Z1 has not launched, and none of its four certification routes has produced a certificate yet. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
| 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 | Kalimantan coal mining region: Coal handling and preparation plants (dust, Zone 21), Fuel and lubricant storage, Mine-site power generation | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Kalimantan Mining. 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.
Kaltim Prima holds a 90,960-hectare concession across Sangatta and Bengalon and moves coal on a 13-kilometre conveyor to its Tanjung Bara port.
Tutupan produced an estimated 36 million tonnes in 2023 and Sangatta about 41 million tonnes, so fleets and workforces are large and contractor-heavy.
Coal bed methane reserves of about 12.8 trillion cubic metres lie mainly in Kalimantan and Sumatra, which is a reminder that methane can accompany coal seams, though development has been limited.
Indonesia's significant coal deposits are in South Sumatra, East Kalimantan and South Kalimantan, and reserves are estimated to last over 80 years at current rates of extraction.
Indonesia's coal production reached a record 836 million tonnes in 2024, up from 775 million tonnes in 2023, and the country is the world's largest coal exporter.
East Kalimantan has a dry season from May to October and a rainy season from November to April; average humidity in 2013 was between 83 and 87 percent, with temperatures ranging from about 22 to 36 degrees Celsius.
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 Kalimantan coal mining region. Rounds at a large open-pit operation cover fuel stores, power generation and conveyor or loading areas over long distances. A handheld designed for intrinsic safety could hold checklists and photographs, but only in gas areas covered by its marking, and subject to the operator's acceptance.
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.
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 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.
Likely candidates are coal handling and preparation plants (dust, zone 21), fuel and lubricant storage, mine-site power generation, coal loading 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.
Combustible coal dust around crushers, conveyors, stockpiles and loading, plus fuel storage and workshops. Open-pit sites typically have fewer gas risks than underground mines, but the operator defines its zones, so ask for them before using handheld devices.
Most deliveries go by sea to Balikpapan, Samarinda or Banjarmasin and then by road or barge, so allow longer lead times. Stock spare batteries and chargers and confirm customs and radio type-approval requirements with your freight agent.
Many crews share devices and sites, so enrolment, ownership and return procedures matter. Heat, humidity and dust affect battery and seals. Charge only in safe areas. Check the operator's approved-vendor list before purchase. Confirm the current process with the site operator.
More on Kalimantan Mining, and on other places in 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.