KROHNE SMARTSENS PH 8xxx Ex EN - Manual (Page 8)

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DEVICE DESCRIPTION
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SMARTSENS PH 8XXX
www.krohne.com 07/2014 - 4002951402 - MA SMARTSENS PH 8xxx R02 en
2.6 Protection type for gas hazardous areas
In protection type "intrinsic safety" the sensor meets the requirements of EN 60079-11. The
explosion protection is ensured by limitation of the current and voltage so that no ignitable
energy can occur.
The marking of the sensor is:
II 1G Ex ia IIC T6 II 1G Ex ia IIC T6 II 1G Ex ia IIC T6 II 1G Ex ia IIC T6
2.7 Temperature classes
The permissible temperature range depending on the temperature class of the sensor is:
2.8 Autoclavability
To kill off germs, the sensor may be stored in the autoclave at 140°C / 284°F for 20 minutes.
Components of the Ex marking and their definition
II IIII II Group II explosion protection
1111 Equipment category 1
G G G G Gas explosion protection
Ex ia Ex ia Ex ia Ex ia Intrinsically safe equipment, protection level ia
IIC IIC IIC IIC Gas groups IIA, IIB, IIC approved
T6 T6 T6 T6 Temperature classes T6...T1 approved
Temperature
class Permissible ambient or product
temperature in [°C]
Permissible ambient or product
temperature in [°F]
T1 -10...+85°C 14...+185°F
T2 -10...+85°C 14...+185°F
T3 -10...+85°C 14...+185°F
T4 -10...+85°C 14...+185°F
T5 -10...+55°C 14...+131°F
T6 -10...+55°C 14...+131°F
The permissible product temperature range can vary depending on the sensor used. Consult the
standard documentation for this information.
INFORMATION!
The sensor is not operated in the autoclave. For more information consult the standard
documentation.
.book Page 8 Monday, July 21, 2014 3:08 PM