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Summary of Contents for KROHNE DK37
- Page 1 DK32 - DK34 - DK37 DK32 - DK34 - DK37 DK32 - DK34 - DK37 DK32 - DK34 - DK37 Handbook Handbook Handbook Handbook Variable area flowmeter © KROHNE 07/2009 - 4000287102 MA DK32-34-37-R04-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 2010 by KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany) www.krohne.com 07/2009 - 4000287102 MA DK32-34-37-R04-en...
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Page 3: Table Of Contents
4.1 Safety instructions......................14 4.2 Electrical connection of limit switches ................15 4.3 Setting the limit switch for DK32 DK34................16 4.4 DK37/M8M limit switches....................17 4.5 DK37/M8E electrical signal output ................18 4.5.1 Power supply......................... 19 ® 4.5.2 Load for HART communication .................. - Page 4 CONTENTS DK32 - DK34 - DK37 6.4.1 General information......................24 6.4.2 Form (for copying) to accompany a returned device............25 6.5 Disposal .......................... 25 7 Technical data 7.1 Operating principle......................26 7.2 Technical data......................... 27 7.3 Dimensions ........................30 7.4 Flow table ........................33 7.5 Differential pressure regulators ..................
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Page 5: Safety Instructions
• ATEX Directive 94/9/EC for instruments in Ex-areas And also • NAMUR Recommendations NE 21 and NE 43 (DK37/M8E) KROHNE Messtechnik GmbH & Co. KG certifies successful testing of the product by applying the CE mark. 07/2009 - 4000287102 MA DK32-34-37-R04-en... -
Page 6: Safety Instructions From The Manufacturer
SAFETY INSTRUCTIONS DK32 - DK34 - DK37 1.3 Safety instructions from the manufacturer 1.3.1 Copyright and data protection The contents of this document have been created with great care. Nevertheless, we provide no guarantee that the contents are correct, complete or up-to-date. -
Page 7: Product Liability And Warranty
SAFETY INSTRUCTIONS DK32 - DK34 - DK37 1.3.3 Product liability and warranty The operator shall bear responsibility for the suitability of the device for the specific purpose. The manufacturer accepts no liability for the consequences of misuse by the operator. Improper installation and operation of the devices (systems) will cause the warranty to be void. -
Page 8: Warnings And Symbols Used
SAFETY INSTRUCTIONS DK32 - DK34 - DK37 1.3.5 Warnings and symbols used Safety warnings are indicated by the following symbols. DANGER! This information refers to the immediate danger when working with electricity. DANGER! This warning refers to the immediate danger of burns caused by heat or hot surfaces. -
Page 9: Device Description
DEVICE DESCRIPTION DK32 - DK34 - DK37 2.1 Scope of supply INFORMATION! Inspect the cartons carefully for damage or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer. INFORMATION! Check the packing list to check if you received completely all that you ordered. -
Page 10: Device Versions
2.2 Device versions • DK32 with valve and horizontal connection • DK34 without valve and vertical connection • DK37 with valve and horizontal connection The following designs are available as options: • with inlet pressure regulator • with outlet pressure regulator... -
Page 11: Nameplate
DEVICE DESCRIPTION DK32 - DK34 - DK37 2.3 Nameplate INFORMATION! Before installing the flowmeter, make sure that the information given on the nameplate corresponds to the ordering data. Figure 2-2: Nameplates 1 Type of meter 2 Manufacturer 3 Appointed ATEX & DGRL body 4 Design data: temperature &... -
Page 12: Description Code
DEVICE DESCRIPTION DK32 - DK34 - DK37 2.4 Description code Description code DK32 DK34 The description code consists of the following elements*: 1 32 - mit Ventil und horizontalem Anschluss / 34 ohne Ventil und vertikalem Anschluss 2 RE - Vordruckregler / RA - Nachdruckregler 3 K1 - ein Grenzwertgeber / K2 - zwei Grenzwertgeber 4 S - Anschlussstecker / L - Leitungseinführung inkl. -
Page 13: Installation
INSTALLATION DK32 - DK34 - DK37 3.1 Notes on installation INFORMATION! Inspect the cartons carefully for damage or signs of rough handling. Report damage to the carrier and to the local office of the manufacturer. INFORMATION! Check the packing list to check if you received completely all that you ordered. -
Page 14: Electrical Connections
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.1 Safety instructions DANGER! All work on the electrical connections may only be carried out with the power disconnected. Take note of the voltage data on the nameplate! DANGER! Observe the national regulations for electrical installations! DANGER! For devices used in hazardous areas, additional safety notes apply;... -
Page 15: Electrical Connection Of Limit Switches
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.2 Electrical connection of limit switches The electrical connections for limit switches is effected: • DK../../S - in the plug connector • DK../../L - using a preassembled cable. The following procedures must be performed (DK../../S): •... -
Page 16: Setting The Limit Switch For Dk32 Dk34
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 Connection three-wire reed contact Figure 4-2: Electrical connection of reed contact limit switch Strand colours for flowmeters with preassembled cables: 1 Silicone-insulated wire - yellow/green / FEP-insulated wire - red 2 Silicone-insulated wire - brown / FEP-insulated wire - brown 3 Silicone-insulated wire - blue / FEP-insulated wire - blue 4.3 Setting the limit switch for DK32 DK34... -
Page 17: Dk37/M8M Limit Switches
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.4 DK37/M8M limit switches The limit switches can be set over the entire measuring range using the maximum pointer. The set limit values are displayed on the scale. The pointers are set to the desired limit values using a slip coupling along the scale. -
Page 18: Dk37/M8E Electrical Signal Output
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.5 DK37/M8E electrical signal output Figure 4-5: Electrical connection M8E 1 Terminal connection 2 Auxiliary power 14.8...30VDC 3 Measurement signal 4...20mA 4 External load, HART communication The circuitry for connection to other devices such as digital evaluator units or process control equipment must be designed with especial care. -
Page 19: Power Supply
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.5.1 Power supply INFORMATION! The supply voltage has to be between 14.8VDC and 30VDC. This is based on the total resistance of the measuring loop. To determine this, add up the resistances of each component in the measuring loop (not including the meter). -
Page 20: Ground Connections
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.6 Ground connections The earthing can be done on the head piece of the measuring section (M4 threaded hole) Figure 4-7: Ground connections 1 Earth connection on the measuring section DANGER! The earth conductor must not transfer any interference voltage. -
Page 21: Protection Category
ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.7 Protection category The flowmeter meets all requirements of protection category IP 65. DANGER! After all servicing and maintenance work on the flowmeter, the specified protection category has to be ensured again. Therefore it is essential to observe the following points: •... -
Page 22: Start-Up
START-UP DK32 - DK34 - DK37 5.1 Standard device CAUTION! When starting up the device, the following points must be observed: Compare the actual operating pressure and the product temperature of the system with the • specifications on the nameplate (PS and TS). These specifications may not be exceeded. -
Page 23: Service
SERVICE DK32 - DK34 - DK37 6.1 Maintenance Within the scope of routine maintenance of the system and pipelines, the flowmeter should also be inspected for signs of fouling, corrosion, mechanical wear and leaks, as well as damage to the measuring tube and indicator. -
Page 24: Spare Parts Availability
SERVICE DK32 - DK34 - DK37 6.2 Spare parts availability The manufacturer adheres to the basic principle that functionally adequate spare parts for each device or each important accessory part will be kept available for a period of 3 years after delivery of the last production run for the device. -
Page 25: Form (For Copying) To Accompany A Returned Device
SERVICE DK32 - DK34 - DK37 6.4.2 Form (for copying) to accompany a returned device Company: Address: Department: Name: Tel. no.: Fax no.: Manufacturer's order no. or serial no.: The device has been operated with the following medium: This medium is:... -
Page 26: Technical Data
G = A + W. Figure 7-1: Operating principle For the DK32, DK34 and DK37/M8M 1 the flow-dependent height of the float in the measuring section is transmitted by means of a magnetic coupling and displayed on a scale. -
Page 27: Technical Data
TECHNICAL DATA DK32 - DK34 - DK37 7.2 Technical data INFORMATION! The following data is provided for general applications. If you require data that is more • relevant to your specific application, please contact us or your local representative. Additional information (certificates, special tools, software,...) and complete product •... - Page 28 -13...+275 Max. ambient temperature T -25...+70 -13...+158 amb. 1 High temperature version up to 200°C / 392°F Indicators of DK32 DK34 DK37/M8M with limit switches Cable fitting DK3x/Kx/S M16 x 1,5 Cable diameter DKx/Kx/L 7 ... 8mm Clamp connection DK3x/Kx/S 1.5mm...
- Page 29 TECHNICAL DATA DK32 - DK34 - DK37 External resistance dependency <0.1% Effect of temperature <10µA/K Max. external resistance / load 640 Ohm (30VDC) impedance 250 Ohm ® Min. load for HART Software- firmware version 01.1.4 Ident No. 3204090300 ® M8E HART...
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Page 30: Dimensions
TECHNICAL DATA DK32 - DK34 - DK37 7.3 Dimensions Dimensions, DK32 DK34 Device [mm] ["] [mm] ["] [mm] ["] [mm] ["] DK32 with valve and 1,66 4,65 3,55 3,94 horizontal process connections DK34 without valve 1,66 4,33 3,07 and vertical process... - Page 31 TECHNICAL DATA DK32 - DK34 - DK37 DK37 dimensions d approx. Device [ mm] ["] [ mm] ["] [ mm] ["] [ mm] ["] DK37/M8E with 2,21 6,03 4,92 ca. 5,67 valve and horizontal process connections DK37/M8E with 2,21 7,21 6,11 ca.
- Page 32 TECHNICAL DATA DK32 - DK34 - DK37 Min. installation distance If several instruments are installed side by side, a minimum distance betwween these instruments is required. Min. distance Device [mm] ["] DK32 / DK34 2,36 DK37/M8M 3,94 DK37/M8E 4,73 Weights Approx.
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Page 33: Flow Table
Air 20°C / 68°F - 1.013 bar abs. / 14,7 psi Other flow ranges on request Conversion for other materials or operating data (pressure, temperature, density, viscosity) is performed at KROHNE using the calculation method in accordance with VDI /VDE Directive 3513 07/2009 - 4000287102 MA DK32-34-37-R04-en www.krohne.com... - Page 34 TECHNICAL DATA DK32 - DK34 - DK37 Valves (only DK32 and DK37) Max. low rate Qv Valve characteristic Valve spindle Water Cones Ø [mm] Ø ["] [l/h] [gph] [l/h] [scfh] /h] [gpm] K 005 - K 010 0,039 1,32 3,72 0.018...
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Page 35: Differential Pressure Regulators
DK32 - DK34 - DK37 7.5 Differential pressure regulators Differential pressure regulators are used (DK32 and DK37 only) to help maintain constant flow rates in the case of fluctuating inlet or outlet pressures. Minimum pressure levels are required to permit operation of the regulators (see Regulator characteristics). - Page 36 TECHNICAL DATA DK32 - DK34 - DK37 Control range inlet pressure regulator 1 Max. flowrate Water Min. inlet pressure Δ p1 [bar] Δ p1 [psig] [l/h] [gph] [l/h] [scfh] RE-1000 ...40 ...11 ...1000 ...37 0.007 RE-4000 ...80 ...20 ...2000 ...75 0.015...
- Page 37 0,91 DK37/M8M approx. approx. approx. approx. 0,91 1 with outlet pressure regulator DK32 with inlet pressure regulator DK37/M8E and M8M with inlet pressure regulator DK32 with outlet pressure regulator DK37/M8E with outlet pressure regulator 07/2009 - 4000287102 MA DK32-34-37-R04-en www.krohne.com...
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Page 38: Notes
NOTES DK32 - DK34 - DK37 www.krohne.com 07/2009 - 4000287102 MA DK32-34-37-R04-en... - Page 39 NOTES DK32 - DK34 - DK37 07/2009 - 4000287102 MA DK32-34-37-R04-en www.krohne.com...
- Page 40 Measuring systems for the oil and gas industry • Measuring systems for sea-going tankers Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 D-47058 Duisburg (Germany) Tel.:+49 (0)203 301 0 Fax:+49 (0)203 301 10389 info@krohne.de The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...
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