Owner manual

DEVICE DESCRIPTION 2
7
H250 M40
www.krohne.com06/2013 - 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 70Ex d IIC T1-T6 Gb DIP A21 Ta 70
Ex d IIC T1-T6 Gb DIP A21 Ta 70°C IP66/67
C IP66/67C 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 dEx d
Ex d Electronics compartment - protection type flameproof enclosure
IIC
IICIIC
IIC Gas group, Suitable for gas groups IIC, IIB and IIA
T1-T6
T1-T6T1-T6
T1-T6 Temperature class, suitable for temperature classes T1 ... T6
Gb
GbGb
Gb EPL, suitable for zone 1
DIP
DIPDIP
DIP Protection type dust ignition proof
A21
A21A21
A21 Enclosure suitable for zone 21
Ta 70
Ta 70Ta 70
Ta 70°C
CC
C Maximum surface temperature of the converter housing
IP66/67
IP66/67IP66/67
IP66/67 Ingress protection
AD_H250_M40_NEPSI_Ex_d_R01_en_4002868601_PRT.book Page 7 Wednesday, July 24, 2013 1:42 PM