CONTENTS
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www.krohne.com
03/2013 - 4002553501 MA H250/M9-NEPSI Ex i AD R01 en
H250 M9
1 Safety instructions
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1.1 General notes ................................................................................................................... 3
1.2 NEPSI conformity ............................................................................................................. 3
1.3 Security information......................................................................................................... 3
2 Device description
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2.1 Device description ............................................................................................................ 4
2.2 Description code............................................................................................................... 4
2.3 Marking............................................................................................................................. 5
2.4 Flammable products ........................................................................................................ 6
2.5 Device category ................................................................................................................ 6
2.6 Types of protection ........................................................................................................... 6
2.7 Ambient temperature / temperature classes.................................................................. 7
2.8 Electrical data................................................................................................................. 11
3 Installation
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3.1 Installation...................................................................................................................... 12
4 Electrical connections
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4.1 General notes ................................................................................................................. 13
4.2 Power supply .................................................................................................................. 13
4.3 Inputs/outputs ................................................................................................................ 13
4.4 Earthing and equipotential bonding............................................................................... 13
5 Operation
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5.1 Start-up........................................................................................................................... 14
5.2 Operation ........................................................................................................................ 14
6 Service
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6.1 Maintenance ................................................................................................................... 15
6.2 Dismantling .................................................................................................................... 15
7 Attachment
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8 Notes
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AD_H250_M9_NEPSI_Ex_ia_R01_en_4002553501_PRT.book Page 2 Thursday, March 7, 2013 7:31 AM
