KROHNE H250 M9 ATEX II2G Ex i EN - Manual (Page 4)

2
DEVICE DESCRIPTION
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H250 M9
www.krohne.com 11/2012 - 4000345604 MA H250/M9-Ex-II2G-AD R06 en
Device description
2.1 Device description
Variable area flowmeters measure and display the volume flow of flammable and non-
flammable gases and liquids. Depending on the device version, electrical limit switch contacts
and a 4...20 mA signal output or a Profibus PA interface can be installed in the display.
2.2 Description code
The safety description code * consists of the following elements:
* positions which are not needed are omitted (no blank positions)
1 Direction of flow
H - horizontal orientation
U - vertical downwards
no identifier - standard upwards
2 Materials / versions
RR - Stainless steel
C - PTFE or PTFE/ceramics
HC - Hastelloy
Ti - Titanium
F - Sterile version (food)
3 Heating jacket version
B - with heating jacket
4 Indicator part series
M9 - Indicator M9 standard indicator
M9S - Indicator with increased protection
M9R - Indicator in stainless steel housing
M9T - Indicator in stainless steel housing with increased protection
5 High-temperature version
HT version with HT extension
6 Electrical signal output
ESK - Electronic transmitter
7 Limit switch
K1 - One limit switch
K2 - Two limit switches
8 Explosion protection
Ex - Explosion-protected equipment
AD_H250_M9_II2G_R06_en_345604_PRT.book Page 4 Thursday, November 8, 2012 9:42 AM