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Summary of Contents for Eletta M Series
- Page 1 M-series Flow Meter Manual 2022-04-22 61B2E23...
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Page 2: Table Of Contents
____________________________________________________________________________________________________ 1 Contents CONTENTS ..............................2 ABOUT THIS MANUAL ........................... 4 PROPRIETARY RIGHTS ......................... 4 SAFETY INSTRUCTIONS ........................4 DISTRIBUTORS ............................5 CUSTOMER SERVICE ..........................5 ABOUT TROUBLESHOOTING ......................5 GENERAL INFORMATION ........................5 ........................... 5 ENERAL ESCRIPTION ....................6 IFFERENTIAL RESSURE RINCIPLE... - Page 3 ____________________________________________________________________________________________________ 14.3 ............................. 26 AS FLOW MODE INSTALLATION MODIFICATIONS ....................28 15.1 ........................28 HANGE OF IRECTION 15.2 ..........................28 HANGE OF ANGE MAINTENANCE ..........................28 16.1 ................................29 OUSING 16.2 ....................29 LECTRICAL WIRING AND CONNECTIONS 16.3 ............................29 OLTS AND SCREWS 16.4 ...........................
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Page 4: About This Manual
This manual contains confidential technical data, including trade secrets and proprietary information, that are the property of Eletta Flow AB, Sweden. Any changes or alterations to downloaded or printed Eletta original documentation such as manuals, drawings, leaflets, newsletters etc, are not permitted without a written permission from Eletta Flow AB, Sweden. -
Page 5: Distributors
8 General Information 8.1 General Description The M-series Eletta Flow Meters are used to measure and control flows of liquids and gases in threaded pipes with sizes DN15-DN40 and flange fitted pipe sizes DN15 to DN400. Note that the M-series Flow Meters arrives factory calibrated and programmed at delivery. At the time of order, data for your specific application is used for configuration of the unit. -
Page 6: The Differential Pressure Principle
M325, with standard pressure operating range of 12,5 – 1250 mbar • M350, with standard pressure operating range of 25 – 2500 mbar The differential pressure range can be customized using Eletta Flow Center or specified at the time of ordering. 8.3 Accuracy The M-series Flow Meter measures media pressure using two independent pressure transducers. -
Page 7: Control Unit
____________________________________________________________________________________________________ 8.4.1 Control unit The Control Unit contains the two pressure sensors, the circuit board and the electrical connector with integrated filter. The circuit board outputs 4-20 mA and ModBus RTU through the output connector. The settings are adjustable using Flow Center or ModBus. Settings for the optional display can be changed directly at the meter but will not change the measurements. -
Page 8: Pipe Dimensions
Conformity assessment has been performed according to module A. Internal production control combined with module A2. Internal manufacturing checks with monitoring of the final assessment, for category 2. Performed by Kiwa Inspecta AB. PED Declaration of conformity will be sent to you upon request and are also available on www.eletta.com... -
Page 9: Emc
9.2 Preparations Before installation, we kindly ask you to perform the following steps: 1) Eletta recommends that you choose a correct position for the installation of the flow meter in your pipe system. The following table serves as a guideline. -
Page 10: Installing The Flow Meter
____________________________________________________________________________________________________ For a GL or FA pipe the engraved arrow on the M-unit should coincide with the red flow pointer on the pipe, see below pics. 9.3 Installing the Flow Meter - Disconnect all electrical power before installation! - Make sure that the system is not pressurized! 1) Install the Flow Meter in any desired direction, vertical or horizontal. - Page 11 ____________________________________________________________________________________________________ For FA and FSS pipe sections, please support the Flow Monitors with rigid brackets. We recommend installing them in the pipeline downstream and upstream to avoid unnecessary stress in the installation area. If your system still suffers from vibrations, we recommend separate mounting of the Pipe Section and Control Unit.
- Page 12 Therefore, the recommendation above serves only as a guideline, i.e. a method that has proven to secure the measurement accuracy. If shorter runs are used, Eletta neither can guarantee the specified maximum accuracy, nor predict the flow in your specific application.
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Page 13: Electrical Installation
____________________________________________________________________________________________________ 9.4 Electrical Installation The electrical installation must only be made by authorized personnel! Do not install the M-series flow meter in Ex-hazardous areas! The connection cable is included in the purchase of your M-unit. The cable has eight wires and a M12-female connector with screw locking and one end open. -
Page 14: Display (Option)
____________________________________________________________________________________________________ In order to operate several devices at one serial interface, they are simply all connected in parallel (RS485A, RS485B, GND and +Vcc). Before incorporating the devices into the bus, each device must be programmed with a different address. It is possible to configure a network up to a length of 1300 metres with a maximum of 128 devices. -
Page 15: Rst Total
____________________________________________________________________________________________________ 10.2 Rst total Pressing the green button will reset the volume of the logged flow to zero. 10.3 Rotate 180 Pressing the green button will rotate the screen 180 degrees/ flip it horizontally; the buttons will be automatically adjusted for the viewing angle. 10.4 Unit select Pressing the green button will bring up the unit submenu. -
Page 16: Set Qmax
____________________________________________________________________________________________________ 10.5 Set Qmax The Set Qmax menu is used to set the maximum flow value witch is the same maximum value set in flow center. Each number is increased by pressing the up arrow and decreased by pressing the down arrow, pressing the green button will select the shown value. The chosen number will shift to the left by one for each press of the green button. -
Page 17: Optional Accessories
____________________________________________________________________________________________________ 11 Optional accessories 11.1 Separate Mounting Sometimes, the pipe Section and the Control Unit need to be separately located from each other. The reasons could be lack of space, high system media temperature or vibrations. The following section explains our Separate Mounting kit. The orifice plate creates two pressures, one on each side of the plate. -
Page 18: Separate Mounting - Installation
Such pipes are not supplied by Eletta Flow, contact a local hardware store or plumber. If you are using a chemical reactive media, check with your tubing supplier which is the most suitable material to use for your application. -
Page 19: Combination Instrument , Parallel Connectorm
____________________________________________________________________________________________________ 6) Ensure that the hoses have the same length in order to avoid different pressures between the two channels, which will cause inaccurate flow reading. 7) Both adapters have engraved “+” and “– “signs. Connect one of the hoses between the respective “+”... -
Page 20: Cover In Stainless Steel
M-unit will be working together with; normally a V1, S2, V15 or S25 unit. The M- series will then be configured accordingly from factory. It is also possible to re-configure your M-unit with our configuration software Eletta Flow Center. 11.4 Cover in Stainless steel The cover of the M-unit is manufactured in Polyamid plastic;... -
Page 21: Communication Cable For Flow Center
The M-series is always configured according to order information when delivered from our factory. But it is also possible to re-configure your M-unit with our configuration software Eletta Flow Center. Eletta Flow Center is available at our download page of our homepage together with the required drivers for the communication cable. -
Page 22: Tool Kit For Orifice Exchange G-Br Pipes
____________________________________________________________________________________________________ USB connection cable included in the scope of delivery 11.7 Tool kit for orifice exchange G-BR pipes. The orifice is held in place by the plate holder. There are two slots in the plate holder which is used as tool grip when removing the plate holder. Easiest way to remove the plate holder is by using our Tool kit which ensures a firm grip. -
Page 23: Differential Pressure Measurements
12 Differential Pressure Measurements 12.1 The Differential Pressure Principle The function of the Eletta Flow Meters and Flow Monitors is based on the proven and dependable differential pressure principle. The instruments use interchangeable sharp-edged orifice plates designed for different measurement ranges. - Page 24 ____________________________________________________________________________________________________ d = the diameter of the bore in the orifice plate D= the inside diameter of the pipe Normally β is in the interval 0.2 – 0.7 resulting in a permanent pressure loss of 0.96 Δpa – 0.51 Δpa. The second formula approximates the relation between the actual pressure drop and the flow: Δpa = actual pressure loss in mbar...
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Page 25: The Output Signal
____________________________________________________________________________________________________ The permanent pressure drop will then be 0,864 * 125 = 108 mbar If we now compare this drop with the system media pressure of 5 bar, we find that the efficiency η is almost 98%. η = (5 - 0,108)/5 = 97,8% This means that mounting a Flow Meter with a bore, that temporarily decreases the flow area with as much as 86%, only decreases the static pressure with approximately 2 % at 50% flow. -
Page 26: Customized Range
____________________________________________________________________________________________________ 13.1 Customized range Using our software Flow Center (can be downloaded from our web pae), it is possible to let the output signal range limits correspond to other values than 0% and 100 % flow. In this way, if your application always has a flow of 40-60%, you can “zoom in” on this range and let 4 mA correspond to 40% flow, and 20 mA correspond to 60% flow. - Page 27 ____________________________________________________________________________________________________ Assume a unit M310 set for normal running conditions at 5 bar (g), 25 deg C and 100 Nl/min. The following is the response from Flow Center at atmospheric condition for Gas flow (ABS). The gas will be expanded at this state and will only measure between 5 and around 80 mbar (Turndown 1:4 in Q).
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Page 28: Installation Modifications
In each case of changing the orifice plate in-field, we kindly ask you to first contact your distributor or Eletta for advise about the correct orifice plate. The properties of each orifice plate is carefully calculated and designed to match the specific conditions of your installation. -
Page 29: Housing
17 Trouble Shooting 17.1 Inaccurate flow prediction If you find that a purchased Eletta Flow Meter does not show the same value as a reference meter on site, this could either be due to that the reference meter has been calibrated under other reference conditions, or that the Eletta Flow Meter now is used under other conditions than the Eletta factory reference conditions. -
Page 30: The Meter Shows The Wrong Value Or Nothing At All
The Control unit of Eletta M-series contains no exchangeable parts Do not try to repair the Flow Meter yourself. It is not possible to replace certain spare parts since the Flow Meter has to be calibrated as a whole. Contact your local distributor or Eletta Flow for advice. -
Page 31: Technical Specifications
____________________________________________________________________________________________________ 19 Technical Specifications 19.1 Dimensions unit 19.2 Dimensions threaded pipe... -
Page 32: Flange Fitted Pipe Sections
____________________________________________________________________________________________________ 19.3 Flange fitted pipe sections, Painted steel / Bronze metal with shut off block 19.4 Flange fitted pipe sections, stainless steel... -
Page 33: Property - Specification
____________________________________________________________________________________________________ 19.5 Property - Specification Property Specification Accuracy +/- 1% FS of the default differential pressure at reference conditions. (M310: 500 mbar, M325: 1250 mbar, M350: 2500 mbar) Display option: The 4-20mA signal and ModBus RTU accuresies are unchanges. The displayed value will not differ from the output during normal use but can differ up to 4.5% during high power EMC interfearence. - Page 34 ____________________________________________________________________________________________________ Pressure endurance 10 pressure cycles from 0 to F.S. at 25° C Vibration endurance 20 g, 20 to 5000 Hz Shock endurance 20g, sinus 11 ms Control unit Housing Polyamide plastic with EMC shielding inside. Connector 8-poles LTW Connection cable PUR Standard cable 2,5 m (10 m cable available as option) 8 x 0,25 mm Protection class...
- Page 35 316L) Orifice material Stainless steel EN 1.4435 (ASTM 316L) CE approvals Eletta Flow Meters conform with the following EU directives: Low voltage. 2014/35/EU For electromagnetic compatibility, EMC directive 2004/108/EC ( EN 61 000 – 6 – 3:2007 and EN 61 000 – 6 - 2:2005)
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Page 36: Measurement Flow Ranges, Water
____________________________________________________________________________________________________ 20 Measurement flow ranges, Water The following table states the standard flow ranges for the M-series. The chart is a guideline of what flow ranges are achievable for different pipe sections. For other flow ranges and media (gases, oils etc.) consult your local distributor. -
Page 37: Type Plates
____________________________________________________________________________________________________ 21 Type plates On each flow meter you find two type plates stating technical data for your specific flow meter. Examples of type plates are shown below. The largest plate is the main type plate which states: • Type •... -
Page 38: Bom
____________________________________________________________________________________________________ 22 BOM... - Page 39 ____________________________________________________________________________________________________...
- Page 40 ____________________________________________________________________________________________________ M-Display ITEM NO. PART NUMBER DESCRIPTION MATERIAL QTY. 40-93193 Intermediate part CW602N 40-94144 Cover M, with display PA12 Grilamid Ikn-5h 40-94069 Gasket M cover 40-94070 O-ring 18.1x1.6, NBR Pressure Transmitter 40-91091-2 PD-9FLX. 10 bar 40-93191 Baseplate M-HP BR SS-EN 12168 (SS 5170) 40-90076 MFX M3x10 A2 A2 (1.4306/ 1.4301)
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Page 41: Recycling
Please contact your local authority or your household waste disposal service for further details of your nearest designated collection point. Correct product disposal saves resources and prevents negative effects on human health and the environment. Eletta Flow AB P.O. Box 5084 SE-141 05 Kungens Kurva SWEDEN E-mail info@eletta.com...
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