2.4 Residual risks
2.4.1 Risk of an explosion caused by electrical ignition sources
Electrical ignition sources can trigger fires and explosions in a potentially explosive atmosphere.
Non-approved components
Specific hand-held scanners and accessories (including universal supply module, battery, cable) are suitable for each
potentially explosive atmosphere. Hand-held scanners and components that have not been approved for the
respective potentially explosive atmosphere may trigger explosions.
Only use components that have been approved for the relevant zone.
Spark formation during battery change and cable connection
Sparks can arise when changing the battery or connecting cables. Sparks can trigger an explosion in a potentially
explosive atmosphere.
Only insert or remove the battery outside the potentially explosive atmosphere.
Only connect or disconnect the cable outside the potentially explosive atmosphere.
Always have cables connected by a qualified electrician.
Spark formation caused by the battery falling out / the connection cable coming unplugged
The following risks arise if the safety lock on the underneath of the hand-held scanner is not correctly closed:
‒ The battery on a Bluetooth hand-held scanner can fall out.
‒ The connection cable on a wired hand-held scanner can come unplugged.
This can produce sparks which can trigger an explosion.
Check that the safety lock is correctly closed before taking the hand-held scanner into the potentially explosive
atmosphere.
Broken enclosure: loss of explosion protection
The hand-held scanner has been tested for falls from a height of up to 2.4 m (Zone 2 / Div. 2) and 1.2 m (Zone 1 /
Div. 1). There is a risk of the enclosure or the scan window breaking during falls from a greater height, in which case
the explosion protection is no longer guaranteed.
Protect hand-held scanners from falling from a greater height.
If the hand-held scanner has fallen from a greater height or you suspect a damaged enclosure:
– Remove the hand-held scanner from the potentially explosive atmosphere immediately.
– Send the hand-held scanner to BARTEC.
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