Rugged vs intrinsically safe tablets: when a rugged tablet isn’t enough

The difference comes down to what the tablet is built to protect. A rugged tablet is built to survive the site. An intrinsically safe or explosion-proof tablet is certified so that it doesn’t ignite the site. Several rugged tablet makers sell a separate Ex version of a standard model, which makes the line between the two easier to blur than it is with phones.

What makes a tablet rugged

"Rugged" has no formal definition, so each maker decides what goes on the spec sheet. Two ratings come up on almost every one.

IP ratings describe ingress protection. IP65 means dust-tight and protected against water jets. IP67 covers temporary immersion, and IP68 longer immersion under conditions the maker sets. MIL-STD-810H is a US Department of Defense test method covering drops, vibration, temperature, humidity and more. The maker chooses which tests to run and may run them in-house, so the claim is only as specific as the list of tests behind it.

Rugged tablets add features designed around field work, for example drop ratings onto concrete, touchscreens that work with gloves or in rain, sunlight-readable screens, programmable keys, built-in barcode readers and swappable batteries. Getac rates its standard ZX80 for −29 °C to +63 °C, a wider range than most consumer tablets.

Rugged vs intrinsically safe: the difference that matters

None of those ratings deal with ignition. A tablet can ignite a gas or dust atmosphere through a battery fault, a hot surface or a spark at a port, contact or button, and a tablet can pass every drop and immersion test and still carry all of those risks.

Certified tablets manage ignition risk in a recognized way. Intrinsically safe tablets limit the electrical and thermal energy inside the device, and flameproof (Ex db) designs contain an internal ignition inside a strong housing. The rating appears as an Ex marking on the label, backed by an ATEX or IECEx certificate or, for some Zone 2 equipment, the maker’s own ATEX declaration. In Europe, equipment has to be selected by zone, so a rugged tablet with no Ex marking can enter a classified area only if the site’s work permit allows it, usually backed by gas testing.

Rugged tablet makers and their Ex versions

Several rugged makers offer certified versions, and the table covers the brands buyers ask about most. Ratings come from the makers’ documents and certificates, checked in October 2026.

Two patterns stand out. Every Ex version of a rugged tablet in our data, current or discontinued, is certified for Zone 2 only, usually as intrinsically safe (Ex ic). And the Ex version is a separate product with its own certificate, so a standard model from the same family isn’t covered, however similar it looks. Zebra’s standard ET6x shows how specific the rules can be. Its Division 2 use depends on fitting screws over the battery latches and access door before entering the hazardous area, and only the tablet, or the tablet with Zebra’s ET6x keyboard, is covered.

Our best Windows tablets and best tablets for scanning pages compare the current rugged Ex versions with the dedicated Zone 2 tablets.

What the Ex version changes

Turning a rugged tablet into a certified one changes more than the label, and the certificate’s conditions of use say how it may be used in the zone.

Ports. Getac’s certificates for the F110-EX and ZX80-EX say the connection interfaces, such as USB, Thunderbolt, the DC input and the docking connector, must never be used in the hazardous area. BARTEC allows its ports to be used only where the explosive atmosphere is shown to be absent. Any accessory plugged in on site has to wait until the tablet is back in a safe area.

Batteries and charging. Every current rugged Ex version in our data is charged and has its battery changed outside the hazardous area. Some keep their hot-swap design, including the Getac F110-EX G7, the BARTEC ET60/65EX2 and the Winmate tablets, which helps on long shifts as long as the swap happens outside.

Temperature. The certified ambient range is often narrower than the standard model’s operating range. The Getac ZX80-EX is certified for −21 °C to +55 °C, against −29 °C to +63 °C for the standard ZX80, and the discontinued Panasonic Toughpad FZ-G1 ATEX was limited to +5 °C to +45 °C in its Ex configuration.

Accessories. Only the accessories named in the certificate, typically straps, harnesses and a digitizer pen, are covered for use in the zone. Chargers, docks and spare batteries are for safe areas.

The pattern for Zone 1: look beyond rugged Ex versions

Because the rugged Ex versions stop at Zone 2, a site with Zone 1 areas needs a different kind of tablet. Dedicated Ex tablets such as the i.safe MOBILE IS940.1, the ecom Tab-Ex 05 DZ1 and the Eaton MTL GECMA IS Tablet PC are built for Zone 1 and are rugged too, with IP67 or IP68 ratings on most. For iPad fleets, the Xshielder iPad Pro 11-inch puts a current iPad Pro inside a flameproof cover certified under ATEX for Zone 1/21 at IIC T6, with its cameras, LiDAR and Face ID confirmed to work through the cover. Atexxo also converts the rugged Galaxy Tab Active5 for Zone 1.

Our best Zone 1 tablets page ranks the options, and our Zone 1 vs Zone 2 guide covers what changes between the two certifications.

Where a rugged tablet still makes sense

Most sites with hazardous areas also have a lot of unclassified space, for example control rooms, workshops, warehouses, yards and vehicles. A rugged tablet suits those areas well, as it does field work with no classified zones at all.

Many operators run a mixed fleet for this reason. Certified tablets go to the people who enter Zone 1 or Zone 2, and everyone else carries a rugged one. The weak point is the zone boundary. A rugged tablet looks a lot like its Ex version, so clear device labeling and site rules help keep uncertified tablets out of classified areas.