ATEX Tablet Buying Decision Guide
4 steps to the right device
Choosing an ATEX tablet involves four sequential decisions: zone classification, operating system, form factor, and software lifecycle. Get the first one wrong and the rest doesn't matter — deploying Zone 2 equipment in Zone 1 is a notifiable safety incident. This guide walks procurement and HSE teams through each decision.
What is your zone classification?
This is non-negotiable. Your site's hazardous area classification document (per IEC 60079-10-1 or DSEAR risk assessment) determines the minimum equipment category.
Explosive atmosphere likely occasionally in normal operation. Requires Category 2G equipment (Ex ib or Ex ia). More expensive, fewer options, but covers Zone 2 as well.
Explosive atmosphere not likely, only brief periods. Category 3G equipment permitted (Ex nA / Ex ec). Cheaper, more options including Windows tablets. Cannot be used in Zone 1.
Rule of thumb: when in doubt, specify Zone 1. It covers both zones and eliminates the risk of zone boundary disputes. See our detailed Zone 1 vs Zone 2 comparison.
Android or Windows?
This decision is driven by your software requirements, not personal preference.
- + Better battery life (8-12 hours)
- + Lower cost (€2,500-4,000)
- + More Zone 1 options available
- + Mobile-first field apps
- - No legacy Windows software support
- + Runs SCADA/DCS client software
- + Desktop app compatibility
- + Active Directory integration
- - Shorter battery life (4-6 hours)
- - Very few Zone 1 options
- - Higher cost (€4,000-7,000)
Default to Android unless you have a specific desktop Windows application with no web or mobile equivalent. Most modern CMMS, SAP PM, and inspection tools have Android apps.
Screen size and form factor
ATEX tablets come in 8-inch and 10-inch sizes. The choice depends on the primary use case:
One-hand operation, fits in cargo pockets, lighter (~500-600g). Best for walkdowns, checklist-based inspections, barcode scanning.
Better for drawings, P&IDs, work orders with long text. Heavier (~700-900g). Best for control room use, engineering review, training.
Software update lifecycle
This is the hidden risk in ATEX tablet procurement. Vendors state a support period, but the real ceiling is the chipset vendor's BSP (Board Support Package) end-of-life. Ask two questions:
- What is the vendor's stated security patch commitment? (e.g. "Q3/2030")
- What SoC does the tablet use, and when does its BSP expire? After BSP expiry, kernel-level patches cannot be delivered regardless of vendor promises.
Demand both answers in writing before procurement sign-off. A vendor promising "7 years of updates" on a chipset that expires in 4 years cannot deliver on that promise. See our ecom vs i.safe comparison for real-world examples.
FAQ
Zone 1 or Zone 2 tablet?
If any area where the tablet will be used is Zone 1, you need a Zone 1 tablet. Zone 1 equipment can also be used in Zone 2, but not vice versa.
Android or Windows?
Android for 90% of use cases. Windows only if you need legacy desktop software compatibility.