Summary of Contents for Meister DWG Series
- Page 1 Operating instructions DWG Module BASICS Flow Monitor Series DWG Type DWG-1,5 thru 50 Read this manual prior to performing any task!
- Page 2 Telephone: +49 6096 9720 - 0 Fax: +49 6096 9720 - 30 E-mail: sales@meister-flow.com Internet: www.meister-flow.com DWG Modul BASICS, 2, en_US These instructions were compiled by: Meister Strömungstechnik GmbH Subject to change without notice © Meister Strömungstechnik GmbH 2018 03.09.2018 DWG Module BASICS Flow Monitor...
- Page 3 – even in part – as well as dissemina- tion and/or communication of their con- tent is forbidden without prior written Limitations of liability authorization from Meister Strömung- All details and instructions in this stechnik ("manufacturer"). Violations manual have been compiled under...
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Page 4: Table Of Contents
Table of contents Table of contents Overview....................10 1.1 Short description................10 1.2 Warranty and guarantee provisions........... 10 1.3 Customer service................10 Safety......................11 2.1 Explanation of symbols..............11 2.2 Correct use in accordance with these instructions......13 2.3 Special precautions................14 2.3.1 Hazards from electrical current............ - Page 5 Table of contents 5.2 Requirements at the place of installation........... 28 5.3 Preparatory work................29 5.4 Installation in the pipe system............33 5.5 Initial startup..................37 5.6 Electrical connection................38 5.6.1 Switch contact SG-30 with connector in compliance with EN175301-803................39 5.6.2 Switch contact SG-30 with plug connector M12x1......
- Page 6 Table of contents 9.3 Return Materials................74 9.3.1 Return Materials Authorization............74 9.4 Disposal..................... 74 Technical data..................75 10.1 Device data plate................75 10.2 Switch contact data plate..............75 10.2.1 Switch contact data plate for UL Recognized switch contacts..75 10.3 Dimension sheet................
- Page 7 List of figures List of figures DWG flow monitor... 10 Fig. 21: Switch position under no- Fig. 1: flow condition....42 Front view......23 Fig. 2: Fig. 22: Detach socket....43 Switch contact and Fig. 3: Fig. 23: Remove socket....43 female socket....
- Page 8 Fig. 41: Remove slot nozzle..61 Fig. 65: Switch contact rating plate........ 75 Fig. 42: O-ring (seal)....63 Fig. 66: Switch contact rating Fig. 43: O-ring (glass buffer)..64 plate with positioning arrow ......75 Fig. 44: Position of O-rings... 64 Fig.
- Page 9 List of tables List of tables Table 1: Correct use in non- hazard areas....13 Table 2: Correct use of UL Rec- ognized Components in non-hazard areas... 13 03.09.2018 DWG Module BASICS Flow Monitor...
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Page 10: Overview
1.2 Warranty and guar- antee provisions Warranty and guarantee provisions are contained in the general terms and conditions of Meister Strömung- stechnik. 1.3 Customer service For technical support, please contact our customer service department (for contact details, see Page 2). -
Page 11: Safety
Safety Explanation of symbols Safety 2.1 Explanation of sym- This chapter provides an overview of important safety aspects required for bols optimum protection of personnel as Safety instructions well as for safe installation and safe operation of the device. Safety instructions in this manual are marked by symbols. - Page 12 Safety Explanation of symbols Designates step-by-step han- dling instructions CAUTION! ð Designates a state or an This combination of symbol and automatic sequence as a signal word indicates a possibly result of a specific operating dangerous condition that might step result in minor or slight injury if it is not avoided.
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Page 13: Correct Use In Accordance With These Instructions
Safety Correct use in accordance with these instructions 2.2 Correct use in Intended use in explosion-hazard zones includes the observance of all accordance with specifications in these Operating these instructions Instructions, as well as those for "DWG Module ATEX" The device has been designed and constructed solely for the correct use Any additional or different application, in accordance with these instructions. -
Page 14: Special Precautions
Safety Special precautions – Do not use the flow monitor as the sole monitoring device to prevent dan- These operating instructions gerous conditions cannot cover all conceivable – Do not install the flow mon- dangers because many dan- itor as a load bearing part gers arise, not from the device within a pipeline system itself, but from the respective... -
Page 15: Hazards From Electrical Current
Safety Special precautions > Mechanical hazards 2.3.1 Hazards from elec- – Cover or cordon off trical current other live parts in the vicinity Electrical current – Never bridge fuses or put them out of operation. DANGER! Always observe the correct current ratings when Danger to life from electrical replacing fuses... -
Page 16: Hazards From High Or Low Temperatures
Safety Special precautions > Hazards from high or low temperatures 2.3.3 Hazards from high or low temperatures WARNING! Hot or cold surfaces Risk of injury on sharp edges and pointed corners! Sharp edges and pointed cor- WARNING! ners can cause abrasions and skin cuts. -
Page 17: Radiation Hazards
Safety Special precautions > Hazards caused by media 2.3.4 Radiation hazards – Do not place any electronic devices within the vicinity of Strong magnetic fields the magnetic source. These could be damaged WARNING! – Do not place any electronic storage media, credit Danger to life from strong cards, etc. -
Page 18: Personnel Requirements
Safety Personal safety equipment 2.4 Personnel require- Qualified electrician Due to specialized training, knowledge ments and experience as well as knowledge of the relevant standards and regula- tions, the qualified electrician is able to WARNING! independently perform work on the Risk of injury due to insuffi- electrical systems as well as to detect ciently trained and qualified... -
Page 19: Protective Systems
Safety Protective systems When performing the various tasks at, The goggles are used to protect the and with the device, personnel must eyes from flying debris and splashing wear personal safety equipment. Spe- fluid. cial reference is made of this in the individual chapters within these Oper- Protective gloves ating Instructions. -
Page 20: Replacement Parts
Safety Environmental protection 2.7 Replacement parts 2.8 Environmental pro- tection WARNING! NOTICE! Risk of injury due to use of incorrect replacement parts! Risk to the environment due to improper handling of envi- Use of incorrect or faulty ronmentally hazardous sub- replacement parts may result in stances! dangers to personnel as well as... -
Page 21: Responsibility Of The Owner
Safety Responsibility of the owner Lubricants conditions arising at the location at which the device is used, espe- Lubricants such as greases and oils cially in regard to the media used. contain toxic substances. They must He must then implement these never be released into the environ- within Operating Instructions for ment and must be disposed of by a... - Page 22 Safety Responsibility of the owner During the entire period of use of The owner must ensure that the the device, the owner must check maintenance intervals described in periodically to ensure that the these Operating Instructions are Operating Instructions correspond adhered to at all times.
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Page 23: Design And Function
Design and function Device description Design and function 3.1 Overview A float inside the flow monitor is moved by the flowing medium. A mag- netic field is generated by the magnets inside the float. The position of the float is detected by the switch contact. In addition to electrical control by the Reed-contact (switch contact), the cur- rent flow can also be read-off on the... -
Page 24: Component Description
Design and function Component description 3.3 Component descrip- Sight glass tion Switch contact Fig. 4: Sight glass A measuring scale is burnt onto the sight glass, from which the current rate Fig. 3: Switch contact and female of flow can be read-off. socket A potential-free Reed-contact is cast into the switch contact (Fig. -
Page 25: Transport, Packaging And Storage
Transport, packaging and storage Packaging Transport, packaging and storage 4.1 Safety instructions 4.2 Transport inspec- for transport tion On delivery, make an immediate check for completeness and check for trans- port damages. Improper transport If there are any visible external trans- port damages, proceed as follows: NOTICE! Do not accept the delivery... -
Page 26: Symbols On The Shipping Box
Transport, packaging and storage Storage Handling packaging materials Fragile Dispose of packaging material in accordance with the valid legal regula- tions and local ordinances. NOTICE! Designates packages with breakable Danger to the environment or damageable contents. due to incorrect disposal! Handle the package carefully and do Packaging is made of valuable not allow it to fall or be subjected to... - Page 27 Transport, packaging and storage Storage Storage instructions in addition to the instructions listed here may be listed on the packages. Follow these instructions also. 03.09.2018 DWG Module BASICS Flow Monitor...
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Page 28: Installation Und Initial Startup
Installation und initial startup Requirements at the place of installation Installation und initial startup 5.1 Safety Safeguard against restart Incorrect installation and initial startup WARNING! Danger to life due to unau- thorized restart! WARNING! There is a risk of severe or Risk of injury due to incorrect even fatal injury due to unau- installation and initial... -
Page 29: Preparatory Work
Installation und initial startup Preparatory work The flow monitor must be installed in such a way as to preclude WARNING! damage by outside force. It must be ensured that the flow monitor Danger due to incorrect cannot be damaged. If necessary, installation! install an appropriate impact pro- If the requirements listed above... - Page 30 Installation und initial startup Preparatory work The flow monitor must only be installed Unimpeded flow sections in one of the positions displayed above. The medium must flow in the direction of the arrow (from a low to a NOTICE! high scale value). Measuring inaccuracy due to incorrect installation! The measuring accuracy of the...
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Page 31: Fig. 6: Unimpeded Flow Section
Installation und initial startup Preparatory work Unimpeded outlet Fig. 7: Unimpeded outlet If the pipe system ends at an unim- peded outlet, the flow monitor must not be installed directly in front of the Fig. 6: Unimpeded flow section opening. The device must always be 10 x DN completely filled with media to ensure 5 x DN... -
Page 32: Fig. 8: Strainer
Installation und initial startup Preparatory work Strainer Prepare the device NOTICE! Risk of damage to property due to contamination! Contamination and deposits may impair the free movement of the float, thereby damaging the device. – Ensure that there are no foreign particles in the device –... -
Page 33: Installation In The Pipe System
Installation und initial startup Installation in the pipe system 5.4 Installation in the pipe system WARNING! Risk of injury from hot or cold surfaces! WARNING! Pipelines can heat up or cool Risk of injury from pressur- down dramatically due to the ized lines! media flowing through them. - Page 34 Installation und initial startup Installation in the pipe system WARNING! Risk of injury from media in A suitable sealant must be the pipe system! selected, depending on the condition/composition of the If the pipe system contains toxic pipe lines, the medium and the or other hazardous media, operating and environmental severe injury may be caused by...
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Page 35: Fig. 9: Apply Sealing Thread
Installation und initial startup Installation in the pipe system Sealing the pipe connection Personnel: Qualified personnel Nap the thread Fig. 10: Pipe connection with sealing thread ð The pipeline is now ready for assembly (Fig. 10) Fig. 9: Apply sealing thread Apply sealing thread (Fig. -
Page 36: Fig. 11: Screw In The Device
Installation und initial startup Installation in the pipe system Install device in pipe system Personnel: Qualified personnel Protective equipment: Protective gloves Tools: Fixed spanner CAUTION! Fig. 12: Screw in the device Do not hold the device by its Keep turning in the adapter threads. -
Page 37: Initial Startup
Installation und initial startup Initial startup 5.5 Initial startup NOTICE! The following steps must be taken before initial startup and any subse- Vent the pipeline. If there quent startup (e.g. after removal and are air pockets in the line installation during maintenance). during the measurement, this could result in damage to the device... -
Page 38: Electrical Connection
Installation und initial startup Electrical connection 5.6 Electrical connec- – Before commencing work tion on live parts of electrical systems and components, The electrical connection of the flow disconnect the equipment monitor is accomplished through the and ensure that it remains connector plug or the cast on power disconnected for the dura- cable leading from the switch housing. -
Page 39: En175301-803
Installation und initial startup Electrical connection > Switch contact SG-30 with connector in compliance with EN175301-803 5.6.1 Switch contact Change Over (COC): SG-30 with con- nector in compli- ance with EN175301-803 Wiring diagram of the supplied socket (EN 175301-803, Form A) front view. -
Page 40: Switch Contact Sg-30 With Plug Connector M12X1
Installation und initial startup Electrical connection > Switch contact SG-30 with plug connector M12x1 5.6.2 Switch contact Change Over (COC): SG-30 with plug connector M12x1 Wiring diagram, socket (M12x1) Fig. 19: Switch position under no-flow condition Fig. 17: Pin-assignment, socket M12x1 (Form 30x70) Wiring diagram Normally Open (NOC):... -
Page 41: Switch Contact Sg-30 With Cable
Installation und initial startup Electrical connection > Switch contact SG-30 with cable 5.6.3 Switch contact SG-30 with cable The individual cores of the cable are numbered (basic version) or color coded (UL-version) according to the following connection diagrams. Wiring diagram Normally Open (NOC): Fig. -
Page 42: Degree Of Protection (Ip-Code)
Installation und initial startup Grounding the device 5.6.4 Degree of protection Change Over (COC): (IP-Code) The specified degree of protection (IP) is only ensured if approved connection material is used (see following table). Device Specifi- Degree of connec- cation protection tion of con- nection... -
Page 43: Plug Connection
Installation und initial startup Plug connection 5.8 Plug connection Personnel: Qualified electrician Tools: Flat-bladed screwdriver Fig. 22: Detach socket Fig. 24: Loosen inner section Release the fixing screw Remove the plug insert from the (Fig. 22/1) from the socket plug by placing a flat-bladed screwdriver into the slot (Fig. -
Page 44: Fig. 25: Loosen The Screw Connection
Installation und initial startup Plug connection Plug the female socket onto the connector plug and tighten the fixing screw (Fig. 22/1) Fig. 25: Loosen the screw connection Unscrew the screw connection Fig. 26: Pin assignment, plug socket, (Fig. 25/1) by turning in the normally-open contact (SG-30 with direction of the arrow connector in compliance with... -
Page 45: Contact Protection Measures
Installation und initial startup Contact protection measures Suitable measures must be taken to protect against overload (see following examples): Inductive load There is danger of voltage peaks from inductive loads when switching off (up to 10 times the rated voltage). Induc- tive loads are caused by, e.g.: Contactors, relays Solenoid valves... -
Page 46: Fig. 30: Protective Measure Against Capacitive Loads
Installation und initial startup Contact protection measures Long connecting cables Fig. 32: Example 2 Capacitive consumers Protection against ohmic loads can be achieved through installation of a Example of protective measure: resistor in the circuit, or by heating the glow filament. For connection to high- impedance consumers (ex. -
Page 47: Operation
Operation Setting the switch point Operation 6.1 Setting the switch Personnel: point Qualified personnel Tools: Flat-bladed screwdriver Setting the switch point of an Adjust the flow to be monitored installed device and read it off at the scale on the device. The top edge of the float is the read-off point The following instructions describe the procedure for a... -
Page 48: Fig. 34: Loosen Set Screws
Operation Setting the switch point Condition 1: The contact is now Setting the switch point of a non- closed installed device Slowly push the switch contact in the direction of flow until the contact opens Condition 2: The contact is now open Slowly push the switch contact in the direction of flow until the... -
Page 49: Checking The Flow
Operation Checking the flow 6.2 Checking the flow Condition 1: The contact is now closed Reading-off the flow value Slowly push the switch contact Personnel: in the direction of flow until the Qualified personnel contact opens Protective equipment: Condition 2: The contact is now open Goggles Slowly push the switch contact... - Page 50 Operation Checking the flow To obtain greatest reading accu- racy, read-off at eye level. (Fig. 35, middle arrow). The read-off value can be falsified by viewing at an angle Read-off the flow value from the measuring scale 03.09.2018 DWG Module BASICS Flow Monitor...
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Page 51: Troubleshooting
Troubleshooting Safety Troubleshooting 7.1 Safety This chapter describes possible mal- functions of the device, their causes Work performed incorrectly to and repair. remedy a malfunction If malfunctions persist or increase, shorten the maintenance interval to meet the actual operating conditions. WARNING! For malfunctions not described in this Risk of injury due to incorrect... - Page 52 Troubleshooting Safety – Before placing the device back into operation, ensure that all work has been per- The following troubleshooting formed and completed in guide provides an indication of compliance with the specifi- who is qualified to repair the cations and instructions in fault.
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Page 53: Troubleshooting Guide
Troubleshooting Troubleshooting guide 7.2 Troubleshooting guide Fault description Cause Remedy Personnel The switch contact No medium Check that medium is Qualified does not switch flowing through flowing through the personnel flow monitor pipeline Flow is too low or Adjust the switch con- Qualified the switch con- tact to a lower flow... - Page 54 Troubleshooting Troubleshooting guide Fault description Cause Remedy Personnel Switch contact is Switch contact is Remedy the cause of Qualified permanently defective the defect (short-cir- personnel switched cuit, overload) Replace the switch contact The switch point is Improper scale Request proper con- Qualified not the same as installed for...
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Page 55: Maintenance
Maintenance Maintenance plan Maintenance 8.1 Safety – Before placing the device back into operation ensure Maintenance work performed incor- that all work has been per- rectly formed and completed in compliance with the specifi- cations and instructions in WARNING! these Operating Instruc- Risk of injury due to mainte- tions. -
Page 56: Removal From The Pipe System
Maintenance Removal from the pipe system Interval Maintenance work Personnel Visual inspection for dirt/soiling Qualified personnel Visual inspection for free-movement of float Qualified personnel Visual inspection for leaks from the device Qualified personnel Check function of switch contact Qualified personnel 8.3 Removal from the pipe system WARNING! - Page 57 Maintenance Removal from the pipe system WARNING! WARNING! Risk of injury from media in Risk of injury from media res- the pipe system! idue in the device! If the pipe system contains toxic After the pipe system has been or hazardous media, severe emptied, media residue can still injury may be caused by be present inside the device.
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Page 58: Disassembly
Maintenance Disassembly Removing the device from the pipe system WARNING! Personnel: Risk of injury due to incorrect Qualified personnel disassembly! Protective equipment: – The device may still contain media residue As specified in the Safety Data Sheet of the medium, protective –... -
Page 59: Fig. 36: Loosen Screws
Maintenance Disassembly Protective equipment: Fig. 36: Loosen screws As specified in the Safety Data Loosen the top 3 hex head Sheet of the medium, protective screws (Fig. 36/1) using a hex equipment must be worn when screwdriver handling hazardous media. In addition, the specifications of the system operator must be followed. -
Page 60: Fig. 38: Slot Nozzle Buffer O
Maintenance Disassembly Fig. 38: Slot nozzle buffer O-ring Fig. 39: Loosen screws Remove the slot nozzle buffer Loosen the lower 3 hex head O-ring (Fig. 38/1) from the sight screws (Fig. 39/1) glass 03.09.2018 DWG Module BASICS Flow Monitor... -
Page 61: Maintenance
Maintenance Maintenance Fig. 40: Remove the inner section Fig. 41: Remove slot nozzle Carefully remove the inner sec- Using the alignment tool, push tion (Fig. 40/1) of the device the slot nozzle out of the sight (sight glass, slot nozzle and glass until it can be pulled out by float) as a unit together with the hand (Fig. -
Page 62: Cleaning
Maintenance Maintenance > Cleaning 8.5.1 Cleaning CAUTION! It is the responsibility of the operator to establish appropriate intervals and pro- Risk of injury due to dam- cedures for cleaning the individual aged parts! parts of the device. It must be ensured If parts of the device are broken that the parts are not damaged during or damaged, they may cause... -
Page 63: Parts Replacement
Maintenance Maintenance > Assembly 8.5.2 Parts replacement Personnel: Qualified personnel Depending on the operating condi- tions, wear parts such as O-rings, float Tools: and sight glass may have to be Hex screwdriver replaced. Steps required to replace Torque screwdriver and assorted these parts correspond to those used blades when assembling the device... -
Page 64: Fig. 43: O-Ring (Glass Buffer)
Maintenance Maintenance > Assembly Repeat steps 1 and 2 for the second process connection Fig. 43: O-ring (glass buffer) Carefully seat the O-ring (glass buffer) onto the process connec- Fig. 45: O-ring (centering the slot tion (Fig. 43)so that it is properly nozzle) seated on the lower portion of Place the O-ring (for centering... -
Page 65: Fig. 46: Insert Slot Nozzle
Maintenance Maintenance > Assembly Fig. 46: Insert slot nozzle Fig. 47: Centering the slot nozzle Using the alignment tool, insert Place the lower O-ring which the slot nozzle through the sight centers the slot nozzle onto the glass until the lower groove pro- end of the slot nozzle (Fig. -
Page 66: Fig. 48: Float
Maintenance Maintenance > Assembly Fig. 48: Float Fig. 49: Process connection (Inlet) Guide the float (Fig. 48/1) into the sight glass so that the lid of CAUTION! the float (recognizable by the two drill holes) points towards Carefully insert the the slot nozzle process connection (Inlet) (Fig. -
Page 67: Fig. 50: Spanner Flats
Maintenance Maintenance > Assembly Fig. 51: Insert the process connection into the device housing Insert the process connection (inlet) with the inner section into the device housing (Fig. 51) and axially align the connection to the housing. The locating pin hole in the process connection must be centered to the front locking screw of the device... -
Page 68: Fig. 53: Align Slot Nozzle
Maintenance Maintenance > Assembly Fig. 53: Align slot nozzle Fig. 54: O-ring, slot nozzle buffer Using the alignment tool/test rod Insert O-ring (slot nozzle buffer) (Fig. 53/1), align the slot nozzle (Fig. 54/1) and the measuring scale (Fig. 53/2) centered to the sight window of the device housing. -
Page 69: Fig. 55: Position The Outlet Process Connection
Maintenance Maintenance > Assembly Fig. 55: Position the outlet process Fig. 56: Tighten hex socket screws connection Tighten the 3 hex socket screws Insert the outlet process con- (Fig. 56/1), observing the proper Ä Chapter 11.1 “Tight- nection (Fig. 55/1) into the torque ( device housing, pressing lightly. -
Page 70: Switch Contact Replacement
Maintenance Maintenance > Switch contact replacement 8.5.4 Switch contact replacement Tools: Flat-bladed screwdriver Fig. 58: Loosen female socket Loosen the fixing screw Fig. 57: Check for free movement (Fig. 58/1) of the female socket with a flat-bladed screwdriver Check the float for ease of movement by applying light pressure with the alignment tool/ test rod (Fig. -
Page 71: Fig. 60: Loosen Set Screws
Maintenance Maintenance > Switch contact replacement Fig. 60: Loosen set screws Fig. 62: Rotate guide rail to the side Using a flat-bladed screwdriver, Rotate guide rail with switch loosen the set screws Fig. 60/1) contact to the side of the switch contact until it moves freely Fig. -
Page 72: Measures To Be Taken After Maintenance Work
Maintenance Measures to be taken after maintenance work Tighten the set screws (Fig. 60/1) observing the proper tightening torque of the screws Ä Chapter 11.1 “Tightening torque of screws” on page 84) Position the female socket and gasket, then tighten fixing screw 8.6 Measures to be taken after mainte- nance work... -
Page 73: Disassembly And Disposal
Disassembly and disposal Disassembly Disassembly and disposal 9.2 Disassembly After its period of useful life, the device must be disassembled and disposed of Before disassembly: in an environmentally safe manner. Remove fluids and lubricants and all other packaging material and 9.1 Safety dispose of them in an environmen- tally safe manner... -
Page 74: Return Materials
MEISTER will apply. Return shipments which do not comply with the returns – Have electrical scrap, elec- policy may be refused by MEISTER at tronic components, lubri- the expense of the consignor. cants and other supplies disposed of by approved specialists 9.4 Disposal... -
Page 75: Technical Data
Technical data Switch contact data plate > Switch contact data plate for UL Recognized switch contacts Technical data 10.1 Device data plate 10.2.1 Switch contact data plate for UL The data plate is on the mechanical Recognized part of the flow monitor/flowmeter and switch contacts contains the following information: Fig. -
Page 76: Dimension Sheet
Technical data Dimension sheet 10.3 Dimension sheet 03.09.2018 DWG Module BASICS Flow Monitor... -
Page 77: General Specifications
Technical data General specifications 10.4 General specifications Type Overall dimensions (mm) 1/4" DWG-1,5 3/8" 1/2" 1/4" DWG-3 3/8" 1/2" 1/4" DWG-8 3/8" 1/2" 1/4" DWG-12 3/8" 1/2" 1/2" DWG-18 3/4" 3/4" DWG-35 1" 3/4" DWG-50 1" 03.09.2018 DWG Module BASICS Flow Monitor... - Page 78 Technical data General specifications Type Overall dimensions (mm) Weight 1/4" – – – ca. 96 DWG-1,5 3/8" – – – ca. 96 1/2" – – – ca. 96 1/4" – – – ca. 96 DWG-3 3/8" – – – ca. 96 1/2"...
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Page 79: Electrical Specifications
Technical data Electrical specifications 10.5 Electrical specifications Change-Over Contact (COC) Data Value Unit Voltage 250 V Current, maximum 1,5 A Power, maximum 50 VA Minimum load 3 VA Normally Open contact (NOC) Data Value Unit Voltage 250 V Current, maximum Power, maximum 100 VA Change-Over Contact (COC) M12x1 (-20 °C–85 °C) -
Page 80: Electrical Specifications For Ul Recognized Devices
Technical data Electrical specifications > Electrical specifications for UL Recognized devices Normally Open contact (NOC) M12x1 (-20 °C–85 °C) Data Value Unit Voltage 250 V Current, maximum Power, maximum 100 VA Change-Over Contact (COC), PLC Data Value Unit Voltage 250 V Current, maximum Power, maximum 60 VA... -
Page 81: Measuring Ranges
Technical data Measuring ranges > Standard measuring ranges Normally Open Contact (NOC) Data Value Unit Voltage 250 V AC/DC Current, maximum Power, maximum 100 VA Frequency 50/60 Hz 10.6 Measuring ranges 10.6.1 Standard measuring ranges Switch range for H O at 20 °C Type l/min DWG-1,5... -
Page 82: Operating Data
Technical data Operating data 10.7 Operating data Description Value Unit Max. operating pressure Pressure loss 0,01 – 0,2 Max. media temp. 100 (optional: 160) °C Max. media temp. for UL °C Recognized Components Measuring accuracy ± 5 % of full scale value Min. - Page 83 Technical data Operating data NOTICE! It must be ensured that the medium does not freeze. Operating data for devices employed in explosion hazard zones differs from the above and are specified in the Oper- ating Instructions for "DWG Module ATEX, Chapter 4. 03.09.2018 DWG Module BASICS Flow Monitor...
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Page 84: Annex
Annex Replacement parts Annex 11.1 Tightening torque of screws Component/ Designation Size Torque function Device Hexagon M6x6 3 Nm housing screw socket screw Guide rail Countersunk M3x10 0,4 Nm screw screw Switch contact Cylinder head M3x10 0,4 Nm housing screw with assembly slot screw... -
Page 85: Fig. 69: Replacement Parts Drawing
Annex Replacement parts The following replacement parts drawing provides an example of the construction of a DWG Type flow monitor. The actual configuration may vary depending on the model. Fig. 69: Replacement parts drawing Description Process connection, (inlet) O-ring (glass buffer) O-ring (seal) Sight glass Device body... -
Page 86: Tools
Annex Sealant Description Slot nozzle Float with magnets Process connection, (outlet) Guide rail Fixing screw, guide rail Switch contact with male connector Female socket and gasket Fixing screw, (female socket) Washer Fixing screw, (switch contact) 11.3 Tools 11.4 Sealant The following tools are required: Tools Fixed spanner 32, 41, mm Before using a sealant, ensure... -
Page 87: Lubricants
Annex Lubricants 11.5 Lubricants Before using a lubricant, always make sure that it is compatible with the operating medium. For the proper mounting of O-rings, device-specific O-ring installation tools may be purchased from the manufacturer. The following lubricants are suitable to facilitate installing the O-rings: Lubricant O-ring material EPDM... -
Page 88: Index
Index Index Environmental protection ..20 cleaning fluids ... . 20 Application ....13 lubricants . - Page 89 Index Sealant ....86 Service ....10 Maintenance .
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