SAFETY INSTRUCTIONS
1
3
H250 M9
www.krohne.com
03/2013 - 4002553501 MA H250/M9-NEPSI Ex i AD R01 en
Safety instructions
1.1 General notes
These additional instructions apply to explosion-protected versions of variable area flowmeters
with electrical built-ins and the marking Ex ia IIC T1 - T6 Gb. They complete the installation and
operation instructions for the non-explosion protected versions.
The information given in these instructions contains only the data relevant to category 2
explosion protection. The technical details given in the installation and operation instructions for
the non-explosion protected versions apply unchanged unless excluded or superseded by these
instructions.
1.2 NEPSI conformity
The H250/../M9... variable-area flowmeters series has been approved by NEPSI (National
Supervision and Inspection Center for Explosion Protection and Safety of Intrumentation in
China) under Certification No.
This certification together with its boundary conditions is required to be observed without fail
(see also Attachment "Certificate").
The Ex marking is NOT acc. to the ATEX directive 94/9/EC. Placing the product on the market of
the EU for purpose of distribution and/or use in the EU is NOT permitted.
1.3 Security information
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
explosion protection!
GYJ12.1130
GYJ12.1130
GYJ12.1130
GYJ12.1130
CAUTION!
The operator respectively his agent is responsible to follow further standards, directives or laws
if required due to operating conditions or place of installation. This applies particularly for the
use of easy detachable process connections such as SMS or Clamp when measuring flammable
mediums.
AD_H250_M9_NEPSI_Ex_ia_R01_en_4002553501_PRT.book Page 3 Thursday, March 7, 2013 7:31 AM
