KROHNE H250 M10 Wiring diagram

Ex supplementary instructions
Equipment category II 3 D
H250 M10
H250 M10H250 M10
H250 M10 Supplementary instructions
Supplementary instructionsSupplementary instructions
Supplementary instructions
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CONTENTS
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H250 M10
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EC conformity ................................................................................................................... 3
1.3 Safety instructions............................................................................................................ 3
2 Device description 4
2.1 Device description ............................................................................................................ 4
2.2 Description code............................................................................................................... 4
2.3 Marking............................................................................................................................. 5
2.4 Flammable products ........................................................................................................ 6
2.5 Equipment category .........................................................................................................6
2.6 Protection types................................................................................................................ 6
2.7 Ambient temperature / temperature classes.................................................................. 7
2.8 Electrical data................................................................................................................... 8
3 Installation 9
3.1 Installation........................................................................................................................ 9
3.2 Special Conditions ............................................................................................................ 9
4 Electrical connections 10
4.1 General notes ................................................................................................................. 10
4.2 Power supply .................................................................................................................. 10
4.3 Inputs / outputs .............................................................................................................. 10
4.4 Earthing and equipotential bonding............................................................................... 11
5 Operation 12
5.1 Start-up........................................................................................................................... 12
5.2 Operation ........................................................................................................................ 12
5.3 Electrostatic charge .......................................................................................................12
6 Service 13
6.1 Maintenance ................................................................................................................... 13
6.2 Dismantling .................................................................................................................... 14
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SAFETY INSTRUCTIONS 1
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H250 M10
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Safety instructions
1.1 General notes
These additional instructions apply to explosion-protected versions of the H250/M10 variable
area flowmeter with the designation II 3 D. They complement the Installation and Operating
Instructions for the non-explosion protected versions.
The information given in these Instructions contains only the data relevant to Category 3
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 EC conformity
The manufacturer declares with the EC Declaration of Conformity on his own responsibility
conformity with the protection goals of Directive 94/9/EC for use in hazardous areas with dust.
The assessment was made according to Directive 94/9/EC, Annex VIII (module "Internal
production control"), and is registered in-house under
This registration is also provided on the nameplate.
1.3 Safety instructions
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
explosion protection!
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.
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2DEVICE DESCRIPTION
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H250 M10
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Device description
2.1 Device description
Variable area flowmeters measure and display the volume flow of flammable and non-
flammable gases and liquids. The display unit contains a 4...20 mA signal output with optional
HART®communication, two programmable electronic switch outputs and a reset input.
2.2 Description code
The safety description code * consists of the following elements:
* positions which are not needed are omitted (no blank positions)
1 Materials / versions
RR - Stainless Steel
C - PTFE or PTFE/ceramics
HC - Hastelloy
Ti - Titanium
F - aseptic version (food)
2 Series of indicators
M10 - Converter M10
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DEVICE DESCRIPTION 2
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H250 M10
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2.3 Marking
The marking of the entire device is on the display, where the following identification plate can be
found.
Additional markings on the device:
•SN - serial number
•SO - sales order / item
•PA - KROHNE order
•Vxxx - product configurator code
•AC - article code
1 Device type according to description code
2 Manufacturer
3 Identification number of the notified body, Pressure Equipment Directive [PED]
4 Sizing data: temperature & pressure rating
5 PED data
6 Ex data
7 Electrical connection data
8 Note manual
9 KROHNE website
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