Supply and climate
Crude arrives by pipeline from the Gujarat coast. Summers are generally hot and dusty, with cold foggy winters.
The refinery produces ultra-low sulphur diesel under BS VI norms and has four ambient air monitoring stations that predate its start-up. Process units, a naphtha cracker and tank farms create Zone 1 areas. If you are specifying an Ex-proof mobile phone for Panipat, Haryana, 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 Panipat, Haryana: 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 |
|---|---|---|
| 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 | Panipat, Haryana: Refinery process units, Naphtha cracker and petrochemical units, Product tank farms | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Panipat India. 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.
Crude arrives by pipeline from the Gujarat coast. Summers are generally hot and dusty, with cold foggy winters.
Alongside the refinery, Indian Oil runs a naphtha cracker and PX-PTA units producing ethylene, propylene, paraxylene and purified terephthalic acid.
Paraxylene and purified terephthalic acid units were commissioned in June 2006, and a naphtha cracker complex next door makes ethylene and propylene for polymers.
The city is also known as the city of weavers and a textile centre, with wool and cotton milling, glass and electrical appliance manufacturing.
Panipat is 95 kilometres north of Delhi and 169 kilometres south of Chandigarh on NH-44.
A diesel hydrodesulphurisation unit was commissioned in 1999 to produce low-sulphur diesel.
“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 Panipat, Haryana. A marking check at Panipat should compare the device with the cracker and petrochemical units, where ethylene and similar streams can need the more demanding gas group, and the fuel tank farms, which can be lower. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, and the operator's classification decides.
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.
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.
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.
Likely candidates are refinery process units, naphtha cracker and petrochemical units, product tank farms, loading gantries. 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 refinery has process units, hydrogen and cracker areas, tank farms and loading facilities, and the naphtha cracker complex adds ethylene and propylene handling. The operator defines classified areas, so request the drawings before visiting.
Yes, the refinery has paraxylene and PTA units and a naphtha cracker complex alongside it. The units may have different operators and rules, so ask each site.
Cold can reduce battery capacity and fog adds moisture, so sealing and warm storage between uses help. An IP68 housing handles moisture ingress. Ask the operator about its rules for portable equipment outdoors in winter and where devices may be kept warm.
Other guides for Panipat India, other places in India, and the pages behind them.
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.