KROHNE VA FLOWMETERS EN - Manual (Page 13)

INSTALLATION
4
13
VA FLOWMETERS
www.krohne.com 11/2012 - 4000419904 MA VA Mech Ex AD R04 en
Installation
4.1 Mounting and installation
In conformity with the operative installation standards for hazardous areas, mounting and
installation work is required to be carried out by specialist personnel who have received training
in explosion protection.
The directions given in the standard Installation Instruction and in these Additional Installation
and Operating Instruction should be followed without fail.
Verify the suitability of the VA flowmeters for the application in question by checking the data
given on the nameplate. Check compatibility of the process product with the wetted parts against
the data specified in the order.
4.2 Special conditions
Mechanical tests
The flow meters were subjected to a shock text in accordance with EN 13463-1.
• Equipment group - II
• Degree of mechanical risk - low
• Additional markings - X
If the degree of mechanical risk is greater, additional protective measures must be taken.
Item Impact energy (joules)
Measuring units, valves,
regulators
Inspection glass,
Protective cover, transparent
DK32, DK34 4 n/a
DK37/M8M 4 n/a
H250/M8MG 4 n/a
H250/M9 4 n/a
H250/M40 4 n/a
DK46,DK47,DK48,DK800 4 2
GA24 4 2
VA40 4 2
INFORMATION!
Testing is not required for the viewing panel for all metal variable area flowmeters. With regard
to explosion protection for these devices, the intact state of the viewing panel is not important.
AD_VA_Mech_II2GD_R04_en_419904_PRT.book Page 13 Wednesday, November 7, 2012 8:43 AM