2
DEVICE DESCRIPTION
10
DK37/M8 - H250/M8
www.krohne.com
11/2017 - 4002616802 - AD DK37 NEPSI Ex ia R02 en
2.6 Protection types
The variable area flowmeter is designed in type of protection intrinsic safety "i".
The marking for equipment protection level Gb is:
Ex ia IIC T3-T6 Gb
Ex ia IIC T3-T6 Gb
Ex ia IIC T3-T6 Gb
Ex ia IIC T3-T6 Gb
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 ia
Ex ia
Ex ia
Ex ia
Explosion protection type "intrinsic safety", level of protection "ia"
IIC
IIC
IIC
IIC
Gas group, suitable for gas groups IIC, IIB and IIA
T3-T6
T3-T6
T3-T6
T3-T6
Temperature class range, suitable for temperature classes T1 to T6
Gb
Gb
Gb
Gb
EPL, suitable for zone 1 and zone 2
INFORMATION!
For the equipment protection level (EPL) Gb, connection to an intrinsically safe circuit with level
of protection "ib" is required.
When connecting the variable area flowmeter to an intrinsically safe circuit with level of
protection "ia", a higher protection level is given.
