Access
The refinery is about 50 km from the Taj Mahal in Agra and lies in the Delhi-Agra corridor, so road logistics are straightforward. Summers are generally hot and dusty.
Crude arrives through the Salaya-Mathura pipeline, which also supplies the Panipat and Baroda refineries, so feedstock supply is a shared pipeline network. Process units and product storage define its Zone 1 areas. If you are specifying an Ex-proof mobile phone for Mathura, Uttar Pradesh, 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 Mathura, Uttar Pradesh: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
For the record, no certificate exists for the IS-04Z1 today. The programme is under way ahead of a Q4 2026 launch. 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 | Mathura, Uttar Pradesh: Refinery process units, Crude and product tank farms, Product loading gantries | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Mathura India. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
The refinery is about 50 km from the Taj Mahal in Agra and lies in the Delhi-Agra corridor, so road logistics are straightforward. Summers are generally hot and dusty.
Mathura is inland and is supplied with crude through the Salaya-Mathura pipeline, a 2,663 km line from the Gujarat coast, so there is no marine terminal.
It was designed for 6.0 million tonnes a year, expanded to 7.5 million tonnes in 1989 and now processes about 8.0 million tonnes annually.
The refinery is located about 50 kilometres from the Taj Mahal, in the Agra-Mathura part of Uttar Pradesh.
The refinery began producing BS VI standard fuels for Delhi NCR ahead of the April 2020 mandate, showing continuing upgrade work.
Mathura has a hot semi-arid climate, which means very hot summers and relatively low rainfall.
“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 Mathura, Uttar Pradesh. A marking check at Mathura would be set against process units, product tank farms and loading gantries. Fuel areas often fall in lower gas groups, though hydrogen-containing units differ. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, and the operator's classification decides suitability.
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.
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, crude and product tank farms, product loading gantries, pipeline pumping stations. 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.
Mathura has a hot semi-arid climate with very hot summers, so check the device's maximum operating and charging temperature on the datasheet and avoid leaving it in direct sun or vehicles.
Process units, tank farms, pump areas and loading gantries have classified areas for flammable gas and vapour. The operator defines these and specifies approved equipment, so request the area classification before entering.
Heat can shorten battery life and dust can work into ports and seals. A sealed IP68 housing helps with dust. Keep devices out of direct sun between uses, and ask the operator about charging and storage arrangements for portable equipment during the hot months.
Related guides for Mathura India and for India.
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.