KROHNE DK37/M8 Series Supplementary Instructions Manual
Variable area flowmeter
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Also See for DK37/M8 Series:
- Supplementary instructions manual (16 pages) ,
- Supplementary instructions manual (20 pages)
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DK37/M8
DK37/M8
DK37/M8
DK37/M8
Variable area flowmeter
Equipment protection level (EPL) Gb and Db
in protection type intrinsic safety "i"
© KROHNE 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en
Supplementary Instructions
Supplementary Instructions
Supplementary Instructions
Supplementary Instructions
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Table of Contents
Related Manuals for KROHNE DK37/M8 Series
Summary of Contents for KROHNE DK37/M8 Series
- Page 1 DK37/M8 DK37/M8 DK37/M8 DK37/M8 Supplementary Instructions Supplementary Instructions Supplementary Instructions Supplementary Instructions Variable area flowmeter Equipment protection level (EPL) Gb and Db in protection type intrinsic safety "i" © KROHNE 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en...
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Page 2: Table Of Contents
4.4 Grounding and equipotential bonding................16 5 Operation 5.1 Start-up........................... 17 5.2 Operation ........................17 5.3 Electrostatic charge ....................... 17 6 Service 6.1 Maintenance ........................18 6.2 Dismantling ........................18 7 Notes www.krohne.com 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 3: Safety Instructions
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. 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 4: Safety Instructions
The operator or his agent is responsible for observing any additional standards, directives or laws if required due to operating conditions or place of installation. This applies in particular to the use of easily detachable process connections when measuring flammable media. www.krohne.com 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 5: Device Description
Limit switch (M8M version) Limit switch (M8M version) K1 - one limit switch K2 - two limit switches * positions which are not needed are omitted (no blank positions) 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 6: Marking
• 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 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 7: Flammable Products
The operator is responsible to ensure that the flowmeter is operated safely in terms of the temperature and pressure of the products used. In case of operation with flammable products the measuring units must be included in the periodic pressure tests of the piping. 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 8: Equipment Category
Definition of zone 21: 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. www.krohne.com 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 9: Types Of Protection
For the equipment protection level (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. 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 10: Ambient Temperature / Temperature Classes / Product Temperature
Unobstructed ventilation of the indicator part must be ensured. For certain device versions, lower values apply due to differing boundary conditions (e.g. liner materials). Here the user should consult the technical data sheet. www.krohne.com 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... - Page 11 +135 1 +275 2 +100 1 +212 2 Table 2-3: Maximum permissible product temperature 1 Temperature resistance of the cable ≥ +80°C 2 Temperature resistance of the cable ≥ +176°F 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com...
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Page 12: Surface Temperature For Equipment Protection Level Db
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 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 13: Installation
Ambient temperature / temperature classes / product temperature Surface temperature for equipment protection level Db on page 10 and refer to Electrical data page 12 and refer to on page 12. 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 14: Electrical Connections
(plastic PG 3...7 mm / 0.12...0.28", metal PG 6...10 mm / 0.24...0.39"). • Unused cable entries are to be closed (>IP66/67). Ensure that the gaskets and incised gasket ring are tight. www.krohne.com 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 15: Power Supply
The signal circuits of the variable area flowmeters may only be connected to certified intrinsically safe slave units or circuits. For more information refer to chapter "Electrical data". 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 16: Grounding And Equipotential Bonding
Any existing cable shields and all cores that are not used must be carefully insulated against each other and against ground (test voltage ≥ 500 V ) according to applicable installation regulations. www.krohne.com 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 17: Operation
• spraying of electrons (e.g. in the vicinity of electrostatic painting systems) or • pneumatically conveyed dust is exposed. CAUTION! Electrostatic charging of the housing surface by friction must be avoided. The devices must not be dry cleaned. 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... -
Page 18: Service
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 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en... -
Page 19: Notes
NOTES DK37/M8 03/2019 - 4007510401 - AD DK37/M8 Exi INMETRO R01 en www.krohne.com... - Page 20 • Process Analysis • Services Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.: +49 203 301 0 Fax: +49 203 301 10389 info@krohne.com The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...
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