The "X" after the certificate number refers to special conditions for safe use of the device, which have been listed in these instructions. If needed, the IEC certificate can be downloaded from the manufacturer's website. 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
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. www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
8 Version Ex - Explosion-protected version 9 SIL Version SE - SIL compliant electronic signal output SK - SIL compliant limit switch * positions which are not needed are omitted (no blank positions) 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
• AC - article code Additional plate The association of the housing cover to the device is confirmed by an additional plate with the serial number on the interior of the indicator part. www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
Definition of zone 21 acc. to EN 1127-1, Appendix B: An area in which an explosive atmosphere may occasionally occur in the form of a cloud of flammable dust in the air under normal operation. 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
For the equipment category II 2 D and EPL Db, connection to an intrinsically safe circuit with protection level "ib" is required. When connecting the variable area flowmeter to an intrinsically safe circuit with protection level "ia", a higher protection level is given. www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
For device versions with a heating jacket the temperature of the heating medium does not • exceed the maximum permissible product temperature. For certain device version, lower values apply due to differing boundary conditions (e.g. lining materials). Here the user should consult the technical data sheet. 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
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The permitted ambient temperature range is indicated on the nameplate; depending on the device version it is Tamb = -40...+65°C / -40...+149°F or Tamb = -25...+65°C / -13...+149°F. The minimum product temperature is -40°C / -40°F. www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
T85°C at an ambient temperature of 65°C / 149°F and a product temperature of 85°C / 185°F is valid without a dust coating. For higher product temperatures the maximum surface temperature is defined by the product. 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
Also, when operating the variable area flowmeter outside of the hazardous area, the connection must be made to an intrinsically safe circuit. When connecting to non-intrinsically safe circuits, there is a risk of damage to the safety-defining components. www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
The manufacturer is not liable for any damage resulting from improper use or use other than the intended purpose. This applies in particular to hazards due to insufficient corrosion resistance and suitability of the materials in contact with product. 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
Any existing cable shields should be connected to earth according to applicable installation regulations (EN 60079-14). A terminal connection in the terminal compartment permits a short way earthing of the cable shields. www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
• spraying of electrons (e.g. in the vicinity of electrostatic painting systems). WARNING! Electrostatic charging of the housing surface by friction must be avoided. Variable area flowmeters must not be dry cleaned. 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02 www.krohne.com...
In the case of environmentally critical or hazardous products, appropriate safety precautions • must be taken with regard to residual liquids in the measuring unit. New gaskets have to be used when re-installing the device in the piping. • www.krohne.com 02/2015 - 4001481102 - MA H250/M40-Exi--II2GD-AD R02...
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Measuring systems for the marine industry Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.:+49 203 301 0 Fax:+49 203 301 103 89 info@krohne.com The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...
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