KROHNE DK32 Series Handbook
Variable area flowmeters
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Also See for DK32 Series:
- Supplementary instructions manual (28 pages) ,
- Handbook (40 pages) ,
- Supplementary instructions manual (12 pages)
Related Manuals for KROHNE DK32 Series
Summary of Contents for KROHNE DK32 Series
- Page 1 DK32 - DK34 - DK37 DK32 - DK34 - DK37 DK32 - DK34 - DK37 DK32 - DK34 - DK37 Handbook Handbook Handbook Handbook Variable area flowmeters Electronic revision ESK3x: ER 1.0.x © KROHNE 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
- Page 2 All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without the prior written authorisation of KROHNE Messtechnik GmbH. Subject to change without notice. Copyright 2018 by KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany) www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
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Page 3: Table Of Contents
4.6 Electrical signal output for DK37/M8E................23 4.6.1 Power supply......................... 24 4.6.2 Load for HART communication..................... 24 4.6.3 Configuration......................... 24 4.7 Grounding connections....................25 4.8 Ingress protection ......................26 5 Start-up 5.1 Standard device ......................27 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... - Page 4 7.3.2 DK32, DK34 with transmitter housing ESK3x ..............43 7.3.3 DK37/M8M..........................44 7.3.4 DK37/M8E..........................45 7.3.5 Minimum distances when installing several measuring devices ........46 7.4 Measuring ranges......................47 7.5 Differential pressure regulators ..................49 www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
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Page 5: Safety Instructions
• Lubricating, cooling and anti-corrosive agents DANGER! For devices used in hazardous areas, additional safety notes apply; please refer to the Ex documentation. CAUTION! Do not use any abrasive media containing solid particles. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 6: Certifications
(e.g. ATEX approval). Devices rated below category I due to their size, do not receive the CE mark in the scope of the PED. These devices are subject to applicable sound engineering practice (SEP). www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... - Page 7 • Draining (backflow) may be delayed due to the float in the measuring tube. Expect residue around the valve and in the differential pressure regulator. • Implement appropriate measures to counteract external fire hazards 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com...
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Page 8: Safety Instructions From The Manufacturer
The manufacturer reserves the right to alter the content of its documents, including this disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable in any way for possible consequences of such changes. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 9: Product Liability And Warranty
This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device. Special considerations and precautions are also described in the document, which appear in the form of icons as shown below. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 10: Warnings And Symbols Used
In general, devices from the manufacturer may only be installed, commissioned, operated and maintained by properly trained and authorized personnel. This document is provided to help you establish operating conditions, which will permit safe and efficient use of this device. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 11: Device Description
Check for the correct supply voltage printed on the nameplate. Figure 2-1: Scope of delivery 1 Measuring device in ordered version 2 Product documentation 3 Certificates, calibration report (supplied to order only) 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 12: Device Versions
3 DK37/M8E with valve and electronic indicator 4 DK37/M8M with valve and mechanical indicator Figure 2-3: Versions with regulators 1 DK32 with inlet pressure regulator 2 DK32 with outlet pressure regulator www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... - Page 13 Figure 2-5: Version DK37 with stainless steel housing 1 DK37/M8E/R 2 DK37/M8M/R Figure 2-6: Versions DK32 with limit switches or 4...20 mA/HART signal output 1 DK32 with limit switches 2 DK32 with 4...20 mA/HART signal output 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com...
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Page 14: Nameplate
9 Note to observe the documentation and for disposal Additional markings on the measuring device: • SO - sales order / item • PA - production order • Vx - product configurator code • AC - article code www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 15: Description Code
2.5 Electronic revision DK32/ESK, DK34/ESK The electronic revision of the ESK3x indicates the respective hardware/software status of the electronics. Electronic revision Explanation ER 1.0.x Basic version Table 2-1: Description of the electronic revision 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 16: Installation
The device must not be heated by radiated heat (e.g. exposure to the sun) to an electronics • housing surface temperature above the maximum permissible ambient temperature. If it is necessary to prevent damage from heat sources, a heat protection (e.g. sun shade) has to be installed. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 17: Electrical Connections
INFORMATION! Look at the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 18: Electrical Connection Of The Limit Switches
5 Lift slot 6 Fastening screw of connection box Contact connection Stranded wire colour for cable assembly Min minus white Min plus yellow Max minus green Max plus brown Table 4-1: Contact connections www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 19: Settings Of Limit Switches Of Dk32, Dk34
The reed contact is actuated directly by the float magnet. The desired switching point can only be determined in measuring mode. A reference to the scale and/or pointer cannot be established. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 20: Electrical Signal Output Esk3X For Dk32, Dk34
For devices intended for use in hazardous areas with dust-resistant housing and/or secondary pressure containment, the special conditions for sealing the electronic compartment and for the cable entry are available in the supplementary instructions. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 21: Power Supply
The current flow rate can be transmitted using the integrated HART counter can be configured. Two limit values can be monitored. The limit values are assigned either to flow values or to the counter overflow. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 22: Settings Of Limit Switches For Dk37/M8M
If the pointer vane goes into the slot, an alarm is triggered. An alarm is also triggered in the event of a cable break or short circuit if a suitable amplifier is used. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 23: Electrical Signal Output For Dk37/M8E
Figure 4-7: Electrical connection with galvanic isolation 1 Terminal connection 2 Signal converter isolator with galvanic isolation 3 Power supply (refer to isolator information) 4 Measuring signal 4...20 mA ® 5 External load, HART communication 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 24: Power Supply
Two limit values can be monitored. The limit values are assigned either to flow values or to the counter overflow. The limit values are not depicted on the display. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 25: Grounding Connections
Figure 4-8: Grounding connections 1 Grounding connection at measuring unit DANGER! The grounding wire may not transfer any interference voltage. Do not use this grounding cable to ground any other electrical devices. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 26: Ingress Protection
• Do not remove the required cable bushing from the cable feedthrough. Figure 4-9: Cable feedthrough 1 Use blanking plugs if no cable is routed through 2 Tighten the protection cap 3 Lay the cable in a loop www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 27: Start-Up
When measuring liquids ensure that the pipelines are carefully evacuated. • When measuring gases, increase pressure slowly. • Avoid float impact (e.g. caused by solenoid valves), as this is likely to damage the measuring • unit or float. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 28: Service
It may be necessary to push the locking pin 2 back against its internal spring. Comply with a maximum torque of 4 Nm. CAUTION! Valves that have not been used for a longer period of time may exhibit a higher actuating torque. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 29: Spare Parts Availability
• such dangerous substances, to enclose a certificate with the device confirming that it is safe to handle and stating the • product used. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 30: Form (For Copying) To Accompany A Returned Device
The user must dispose of the WEEE to a designated collection point for the recycling of WEEE or send them back to our local organisation or authorised representative. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 31: Disassembly And Recycling
This should be done especially in the case of devices that have been operated with toxic, corrosive, radioactive, flammable or water- contaminating products to protect both the environment and the health and safety of staff. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 32: Indicator Versions
24 cm² / 3.72 in² Table 6-2: Main components of the electronic components INFORMATION! The PCBs are partially potted with silicone. It is thus not easy to separate the components by hand. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... - Page 33 Electrolytic capacitors LC display Table 6-4: Main components of the electronic components INFORMATION! The PCBs are partially potted with silicone. It is thus not easy to separate the components by hand. 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com...
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Page 34: Technical Data
For DK37/M8E, DK32/ESK and DK34/ESK 2 the flow-dependent height of the float in the measuring unit is transmitted to the electronic display by means of a magnetic coupling on sensors S1 and S2. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 35: Technical Data
Inlet and outlet sections None Protect devices from vibration and high- Use in accordance with IEC 61298-3 in control room or field frequency oscillation with medium vibration level 1 Higher pressures on request 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... - Page 36 DK32, DK34 with transmitter ESK3x -40…+70 -40...+158 DK37/M8E -40…+70 -40...+158 DK32 HT, DK34 HT high-temperature -25…+200 -13...+392 1 For restrictions in hazardous areas refer to the temperature tables in the supplementary Ex instructions www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
- Page 37 Type: SPDT (3-wire, normally closed and normally open) Switching reproducibility: < 5% of full scale range Switching capacity: 12 VA Max. switching capacity: 30 VDC Max. switching current: 0.5 A 1 Reduced values for Ex 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com...
- Page 38 <3.6 or > 21 Maximum 118.75 23.0 Multi-Drop operation Min. U 12 VDC ext. Capacitance number (CN) ESK3x HART Device Manufacturer name (code) KROHNE Messtechnik (0x0045) Model name ESK3x (0x45BA) Revision 7.6 ® HART protocol Device revision Equipment category Transmitter www.krohne.com...
- Page 39 01.15 Identification number 3204090400 NAMUR type test acc. to NE 95 Fulfills NE 21, NE 43 ® M8E HART configuration Manufacturer name (code) KROHNE Messtechnik (69) Model name M8E (230) Revision 5.1 ® HART protocol Device revision Physical Layer Equipment category...
- Page 40 II2D Ex ia IIIC T75°C Db IECEx Electrical Ex ia IIC T6 Gb Ex ia IIIC T75°C Db QPS (US/C) Electrical IS/I/1/ABCD; T6 Other approvals as NEPSI, INMETRO, KCS, CCOE, EAC on request. www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
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Page 41: Dimensions And Weight
["] [mm] ["] [mm] ["] [mm] ["] DK32 1.81 approx. approx. 1500 approx. approx. 1.54 3.55 1.97 DK34 1.32 Weight for DK32 with differential pressure regulator: 2500 g / 5.51 lb 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... - Page 42 [mm] ["] [mm] ["] [mm] ["] DK32 10.2 3.55 approx. approx. 7.68 DK34 10.2 Extra weight for flange adapter dependent on pressure rating of flange: approx. 1.5...9 kg / 3.3...19.8 lb www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
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Page 43: Dk32, Dk34 With Transmitter Housing Esk3X
Total length of flange connection adapter: DK32/ESK with top or bottom valve: 250 mm / 9.8" Weights approx. g approx. lb DK32 with transmitter ESK3x 1100 2.43 DK34 with transmitter ESK3x 1000 2.21 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 44: Dk37/M8M
DK37/M8M with top/bottom valve: 250 mm / 9.8" Weights approx. g approx. lb DK37/M8M 1.76 DK37/M8M with differential pressure 2600 5.73 regulator DK37/M8M/R 2100 4.63 DK37/M8M/R with differential pressure 3900 8.60 regulator www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 45: Dk37/M8E
DK37/M8E with top valve: 300 mm / 11.8" Weights approx. g approx. lb DK37/M8E 1000 2.21 DK37/M8E with differential pressure 2800 6.18 regulator DK37/M8E/R 2300 5.07 DK37/M8E/R with differential pressure 4100 9.04 regulator 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... -
Page 46: Minimum Distances When Installing Several Measuring Devices
When installing several measuring devices side by side, a minimum distance between them has to be observed. Figure 7-2: Minimum distances when installing several measuring devices Device [mm] ["] DK32, DK34 2.36 DK32/ESK, DK34/ESK 5.51 DK37/M8M 3.94 DK37/M8E 4.73 www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en... -
Page 47: Measuring Ranges
/h: Volume flow at standard (norm.) conditions 0°C / +32°F, 1.013 bara / 14.7 psia (DIN 1343) - SCFM or SCFH: Volume flow at standard (std.) conditions +15°C / +59°F, 1.013 bara / 14.7 psia (ISO 13443) 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... - Page 48 42.3 4300 0.48 0.552 Valve characteristics Spindle 1.0 mm / 0.039" Spindle 2.5 mm / 0.098" Spindle 4.5 mm / 0.177" 1 Flow, air 2 Flow, water 3 Spindle revolution n www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
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Page 49: Differential Pressure Regulators
The flow rate in the device remains constant with a fluctuating outlet pressure greater than 0...5.5 bar / 0...79.8 psi. Regulator characteristics 1 Inlet pressure regulators, type RE and NRE 2 Outlet pressure regulators, type RA and NRA 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com... - Page 50 /h: Volume flow at standard (norm.) conditions 0°C / +32°F, 1.013 bara / 14.7 psia (DIN 1343) - SCFM or SCFH: Volume flow at standard (std.) conditions +15°C / +59°F, 1.013 bara / 14.7 psia (ISO 13443) www.krohne.com 11/2018 - 4000287105 - MA DK32-34-37 R07 en...
- Page 51 DK37 0.91 DK37/M8E 0.91 1 with outlet pressure regulator DK32 with inlet pressure regulator DK37/M8M and M8E with inlet pressure regulator DK32 with outlet pressure regulator DK37/M8E with outlet pressure regulator 11/2018 - 4000287105 - MA DK32-34-37 R07 en www.krohne.com...
- Page 52 • 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...