Hazardous Area Considerations; Intrinsically Safe Operations - ABB DHH805-A Operating Instruction

9 Hazardous area considerations

9.1 Intrinsically safe operations

The DHH805-A HART Communicators is certified for intrinsically safe operations according to ATEX, IEC Ex, FMus, FMc and
Inmetro.
Refer to the Intrinsic Safety Control Drawing in section 9.2 of this manual for more information.
The DHH805-A is delivered with an Intrinsic safety rechargeable battery pack, identified by the proper markings as well as a
General purpose AA battery pack holder. The device running with the general purpose battery pack MUST NOT be used in
hazardous areas. The DHH805-A with Intrinsically Safe certification can be identified by the specific label on rear of the battery
pack of the unit. A sample of the Intrinsically Safe and general purpose labels are shown below for reference.
- WARNING -
DON'T USE IN HAZARDOUS AREAS
- AVERTISSEMENT -
NE PAS UTILISER EN PRESENCE
D'UNE ATMOSPHERE EXPLOSIVE
Battery Box: Part N° AU3160
Use n°4 alkaline batteries type AA
4 x 1.5 V d.c. - Do not recharge!
SD Memory card reader inside
I.S. LOOP CONNECTIONS
250Ω min.
POWER LOAD
SUPPLY
HT
Made in Italy
Lenno (CO)
MODEL DHH 805 A
Figure 35: DHH805-A rear labels (respectively: general purpose and Intrinsically Safe)
Note the following WARNINGS and REQUIREMENTS for Intrinsically Safe DHH models:.
Substitution of components may impair Intrinsic Safety.
To prevent ignition of flammable or explosive atmospheres;
— Disconnect power before servicing
— DO NOT open the unit, including battery compartment, or attempt to service the unit when located in flammable or potentially explosive
atmosphere. Remove to safe area.
— DO NOT use the general purpose AA battery pack in hazardous areas.
— DO NOT use the elastic band in hazardous areas.
— DO NOT replace batteries while in explosive or hazardous atmospheres
— DO NOT use any battery type other than those listed on the "Intrinsic Safe Control Document" found in Section 9.2 of this manual.
— DO NOT use USB connection above 40°C (104°F) ambient temperature.
— DO NOT recharge the unit when ambient temperature exceeds 35°C (95°F).
— DO NOT recharge the unit while the device is communicating with a field device
— ONLY use original SD memory card supplied from ABB (code EV3032), installation of a different SD card make the Hazardous area
certification invalid.
TX
DO NOT REMOVE PLUGS COVER IN HAZARDOUS AREAS.
USE BATTERY CHARGE EV3030 INPUT 15Vdc / 200 mA
INPUT 15Vdc / 200 mA
NE PAS ENLEVER LE COUVRE IN ATMOSPHERE
N°136
EXPLOSIVE. UTILISER LE CHARGEURS EV 3030
AVERTISSEMENT
WARNING
Handheld communicator Model DHH805-A | OI/DHH805-EN Rev. D 45
9 Hazardous area considerations
Warning. Serious injury or death may result from
explosions. Do not connect the
Communication / AC Adapter to the DHH805-A
while in a hazardous area. This warning applies
to the USB connector as well as to the AC
Adapter.
Warning. Serious injury or death may result from
explosions. Before making electrical connections
to an Intrinsically Safe DHH805-A at the HART
jacks, verify the HART instrument of interest is
installed in accordance with intrinsically safe field
wiring practices.
Note. Restrictions apply to the use of Intrinsically
Safe DHH805-A units in hazardous areas. Refer
to the Intrinsic Safety Control Drawing in Section
9.2 of this manual for more information. ABB
reserves the right to revise the Intrinsic Safety
Control Drawing without notice. Contact ABB
(www.abb.com) for the current Intrinsic Safety
Control Drawing.