Device description, 6 protection types – KROHNE H250 M40 NEPSI Ex d-Ex t User Manual
Page 7
DEVICE DESCRIPTION
2
7
H250 M40
www.krohne.com
06/2013 - 4002868601 MA H250-M40-NEPSI-Ex-d-R01-
2.6 Protection types
The variable area flowmeter is designed using equipment protection by flameproof enclosures
and equipment dust ignition protection by enclosure.
The marking is:
Ex d IIC T1-T6 Gb DIP A21 Ta 70
Ex d IIC T1-T6 Gb DIP A21 Ta 70
Ex d IIC T1-T6 Gb DIP A21 Ta 70
Ex d IIC T1-T6 Gb DIP A21 Ta 70°C IP66/67
C IP66/67
C IP66/67
C IP66/67
The marking contains the following information:
The marking contains the following information:
The marking contains the following information:
The marking contains the following information:
Ex d
Ex d
Ex d
Ex d
Electronics compartment - protection type flameproof enclosure
IIC
IIC
IIC
IIC
Gas group, Suitable for gas groups IIC, IIB and IIA
T1-T6
T1-T6
T1-T6
T1-T6
Temperature class, suitable for temperature classes T1 ... T6
Gb
Gb
Gb
Gb
EPL, suitable for zone 1
DIP
DIP
DIP
DIP
Protection type dust ignition proof
A21
A21
A21
A21
Enclosure suitable for zone 21
Ta 70
Ta 70
Ta 70
Ta 70°C
C
C
C
Maximum surface temperature of the converter housing
IP66/67
IP66/67
IP66/67
IP66/67
Ingress protection
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