KROHNE OPTIBAR P 2010 C Ex EN - Manual (Page 6)

2
DEVICE DESCRIPTION
6
OPTIBAR P 1010/2010 C
www.krohne.com 01/2014 - 4002866801 - AD OPTIBAR PX010 Ex R01en
2.3 Flammable products
Atmospheric conditions: Atmospheric conditions: Atmospheric conditions: Atmospheric conditions:
An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under
atmospheric conditions. It is defined by the following values
T
atm
= -20...+60°C / -4...+140°F and P
atm
= 0.8...1.1 bar / 11.6...15.9 psi.
Outside of this range, no key figures are available as to ignition behaviour for most mixtures.
Operating conditions: Operating conditions: Operating conditions: Operating conditions:
Outside of atmospheric conditions you cannot apply explosion protection according to directive
94/9/EC (ATEX) – regardless of the zone assignment - due to the lack of key safety data.
2.4 Equipment category
Pressure transmitters are rated in the Categories II 1G or EPL Ga for use in zone 0 and II 1D or
Da for use in zone 20.
2.5 Protection types
The pressure transmitter is designed with protection type intrinsic safety, protection level "ia"
according to EN 60079-11.
The marking is:
acc. to ATEX:
II 1G Ex ia IIC T4 Ga or II 1D Ex ia T85
II 1G Ex ia IIC T4 Ga or II 1D Ex ia T85 II 1G Ex ia IIC T4 Ga or II 1D Ex ia T85 II 1G Ex ia IIC T4 Ga or II 1D Ex ia T85°C C C C
acc. to IECEx:
Ex ia IIC T4 Ga or Ex ia IIIC T85
Ex ia IIC T4 Ga or Ex ia IIIC T85 Ex ia IIC T4 Ga or Ex ia IIIC T85 Ex ia IIC T4 Ga or Ex ia IIIC T85°C Da C Da C Da C Da
The marking contains the following information: The marking contains the following information: The marking contains the following information: The marking contains the following information:
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, level of protection "ia"
IIC IIC IIC IIC Gas group, suitable for gas groups IIC, IIB and IIA
IIIC IIIC IIIC IIIC Dust group, suitable for dust groups IIIA, IIIB and IIIC
T4 T4 T4 T4 Temperature class, suitable for temperature classes T4...T1
Ga Ga Ga Ga EPL, suitable for zone 0
Da Da Da Da EPL, suitable for zone 20
The marking contains the following information: The marking contains the following information: The marking contains the following information: The marking contains the following information:
II IIII II Group II explosion protection
1111 Equipment category 1
D D D D Dust explosion protection
T85 T85 T85 T85°C C C C Maximum surface temperature 85°C / 185°F