TF- & DM-Series. Turbine flowmeter

Transcription

1 Turbine flowmeter

2 Table of contents 1. General Safety guidelines Marking of important information General safety guidelines Description Design and measuring principle Technical data Pressure drop Dimensions Model numbering key Model numbering key TF- & DM-Series Model Numbering key Pickoff Installation / commissioning Flow meter Safety guidelines Checks after delivery Operating pressure, tightening torque Installation Piping Configuration Contamination / filter Commissioning Pickoff and amplifier Checking the signal pick-up Installation Connection of pickoff, amplifier, electronics Explosion protection (ATEX) Troubleshooting Maintenance Declaration of conformity Warranty Customer service TrigasDM GmbH

3 1. General Thank you for selecting a TrigasDM product for your flow measurement application. Flow meter manufacture As a specialist in flow measurement technology, TrigasDM supplies high-quality measuring instruments, electronics and calibrators for liquids and gases. Made in Germany Our products are exclusively developed and manufactured in Neufahrn, 20 km north of Munich, ensuring world-class technical know-how for our customers. Contact We are proud of our high-quality products and friendly customer service and welcome you as a valued customer to our growing family. You can benefit from our long-standing experience and our comprehensive technical support. TrigasDM GmbH Tel.: Erdinger Str. 2b Fax: info@trigasdm.com Neufahrn, Germany This user manual contains information on the description, operation, commissioning and maintenance of the TrigasDM turbine flow meter. For special applications, repair or further information on this or other products, please contact TrigasDM directly. The manufacturer may modify this document without prior notice. Prior to use, request or enquire about valid documentation from the manufacturer if necessary. Warranty claims against the manufacturer may become void if invalid documentation is used. TrigasDM GmbH

4 2. Safety guidelines 2.1 Marking of important information Important information is specially highlighted in this user manual. CAUTION To avoid danger to persons, this information is marked with CAUTION. ATTENTION To avoid danger to equipment, this information is marked with ATTENTION. NOTE Special information for operation / commissioning and maintenance is marked with NOTE. 2.2 General safety guidelines Before using the TrigasDM flow meter, this user manual and all safety instructions must be carefully read in their entirety and understood. Take all necessary precautions to ensure the safety of personnel and equipment. These precautions include, but are NOT limited to, the following examples: Mechanical and electrical installations must only be carried out by qualified and authorized personnel. It must be ensured that the upper limit of the measuring range of the flow meter is not exceeded. Do not install measuring instruments and cables in the vicinity of strong magnetic sources, such as electrical cables, electric motors, transformers, welding equipment, relays or high-voltage cables. These sources can cause electrical noise, resulting in incorrect pulse signals. Flow meters which are designed for applications in liquids are not suitable for applications in gas. Applicable safety standards (for example the ones in accordance with the German Occupational Safety and Health Act) must be observed for the installation and/or operation of the flow meter. Non-observance can result in DANGER to personnel. A flow meter is a precision instrument. Do not use compressed air to clean the flow meter or check its function. TrigasDM GmbH

5 3. Description 3.1 Design and measuring principle Turbine flow meters are the ideal solution for measurement applications in liquids, where there is a requirement for high accuracy, very fast response times, compact design, high reliability in continuous operation and flow changes at fluctuating temperatures. The flow-sensitive element of this volumetric measuring instrument is a turbine rotor concentrically suspended on precision bearings. The flow of the medium imparts a rotational movement on the turbine wheel which is proportional to the velocity of the flowing fluid. The innovative helical design of the rotor blades guarantees improved linearity and reduced pressure loss. Because the flow passage is fixed, the rotation speed is also a real measure of the liquid volume flowing through the flow meter. The rotation of the turbine rotor generates electrical impulses in the Pickoff. Each of these impulses represents a minute and well defined volume of liquid. The turbine flow meter consists of 3 main components: Housing (1) Helical rotor & flow straightener (2) Pickoff with lock nut (3) TrigasDM GmbH

6 3.2 Technical data Flow range: Response time: see "Measuring ranges" table <3 ms Temperature range: TF-Series -270 C up to 150 C DM-Series -270 C up to 400 C Operating pressure: Viscosity: Calibration accuracy: Repeatability: Linearity: Standard material: up to 540 bar depending on connection AN: up to 540 bar HS: up to 34 bar Tri-Clamp: up to 50 bar Each turbine is calibrated according to customer specifications and delivered with individual calibration protocols. (Standard viscosity: 1.3 mm²/s) ±0.03% of reading ±0.05% of reading ±0.5% of reading value in the linear flow range ±0.1% with linearization electronics Stainless steel TrigasDM GmbH

7 3.2.1 Measuring ranges TF- & DM-Series Linear Range Extended Flowrange K-Faktor 1) max. Frequency 1) [l/min] [l/min] [Pulse/l] [Hz] RF 2) und Mag 3) RF 2) Mag 3) Alle Model min. max. min. min. max. DM2-8 0,5 4) 5 4) 0,05 0,8 5, TF/DM4-8 0, ,1 0, TF/DM6-8 1,9 20 0,2 0, TF/DM8-8 2,8 33 0,3 0, TF/DM-08 3,0 40 0,4 0, TF/DM-10 4,5 60 0,6 1, TF/DM-12 7,6 90 0,9 1, TF/DM ,2 3, TF/DM ,8 6, DM , DM DM ) The K-factors and frequency data are average values. Each turbine is calibrated according to customer specifications and delivered with individual calibration protocols. 2) RF = Frequency-modulated pickoff 3) Mag = Magnetic pickoff 4) DM2-8 ±2% of reading TrigasDM GmbH

8 3.2.2 Pressure drop Subsequently, the pressure losses at different flow rates are listed. TF- & DM-Serie Pressure drop [bar] % of the max. linear flow Model 10% 25% 40% 55% 70% 85% 100% DM2-8 0,00 0,01 0,03 0,05 0,08 0,11 0,15 TF/DM4-8 0,01 0,03 0,06 0,16 0,19 0,27 0,35 TF/DM6-8 0,01 0,02 0,06 0,11 0,16 0,23 0,32 TF/DM8-8 0,01 0,05 0,11 0,20 0,30 0,46 0,61 TF/DM-08 0,01 0,03 0,08 0,14 0,21 0,29 0,36 TF/DM-10 0,06 0,12 0,23 0,41 0,61 0,92 1,22 TF/DM-12 0,06 0,13 0,24 0,42 0,64 0,93 1,22 TF/DM-16 0,06 0,09 0,16 0,27 0,39 0,57 0,74 TF/DM-20 0,06 0,13 0,24 0,43 0,62 0,96 1,31 DM-24 0,07 0,16 0,32 0,60 0,89 1,32 1,74 DM-32 0,07 0,08 0,14 0,24 0,34 0,51 0,66 DM-40 0,03 0,06 0,13 0,21 0,40 0,45 0,61 TrigasDM GmbH

9 3.2.3 Dimensions TF- & DM-Series AN-Housing Inner Tube Ø Housing [mm] Connection Ø AN-Size Pickoff Model [mm] A B C ["] t [mm] Thread DM2-8 7,6 62,2 25 / 25 ¾ -16UNJF-3A 1/2 7,7 TF/DM4-8 7,6 62,2 25 / 25 ¾ -16UNJF-3A 1/2 7,7 TF/DM6-8 9,4 62,2 25 / 25 ¾ -16UNJF-3A 1/2 7 TF/DM8-8 10,2 62,2 25 / 25 ¾ -16UNJF-3A 1/2 6,7 TF/DM-08 11,2 62,2 25 / 25 ¾ -16UNJF-3A 1/2 6,2 TF/DM-10 12,8 69,1 SW 36 7/8-14UNJF-3A 5/8 10,6 TF/DM-12 14,3 82,6 SW /16-12UNJ-3A 3/4 9,5 TF/DM-16 21,9 90,4 SW /16-12UNJ-3A 1 8,1 TF/DM-20 25,4 103 SW /8-12UNJ-3A 1 1/4 10,3 DM-24 33,4 116,6 SW /8-12UNJ-3A 1 1/2 8,9 DM-32 44,5 154,0 SW /2-12UNJ-3A 2 10,4 TF- & DM-Series HS-Gehäuse Inner Ø Housing [mm] Connection Pickoff Model [mm] A B C t [mm] Thread DM2-8 7,6 62,2 22 / 17 9,5 7,2 TF/DM4-8 7,6 62,2 22 / 17 9,5 7,2 TF/DM6-8 9,4 62,2 25 / 25 12,7 6,6 TF/DM8-8 10,2 62,2 25 / 25 12,7 6,2 TF/DM-08 11,2 62,2 25 / 25 12,7 5,7 TF/DM-10 12,8 69,1 26 / 22 15,9 10,1 TFDM-12 14,3 82,6 26 / 22 19,1 7,0 TF/DM-16 21,9 90,4 33 / 25 25,4 5,7 TF/DM-20 25,4 103,0 43 / 27 31,8 10,4 DM-24 33,4 116,6 50 / 24 38,1 8,9 DM-32 44,5 154,0 63 / 24 50,8 10,4 DM-40 59,7 128,0 Ø 85 64,0 8,1 The total height is calculated from the height (B) of the flow meter plus measuring element minus the screw-in depth (t). DM-Serie 5/8-18UNF-2B DM-Serie 5/8-18UNF-2B TF-Serie 11/16-24NEF-2B TF-Serie11/16-24NEF-2B TrigasDM GmbH

10 3.3 Model numbering key The type number describes the properties of the measuring instrument Model numbering key TF- & DM-Series (f.e. DM-16AN-BC-1-S) DM -16 AN -BC -1 -S Configuration -S = Standard -L = Lightweight construction -K = Lightweight short version Construction Material -1 = Stainless Steel Bearing -BA = Ball Bearing, Standard -BC = Ball Bearing, Ceramic End Fitting AN = AN thread connection HS = Hose Barb NE = NPT thread connection T1 = Tri-Clamp ½ ¾ T2 = Tri-Clamp 1" - 1 ½ T3 = Tri-Clamp 2 T4 = Tri-Clamp 2 1/2" Base Model 2-8 = iø 7,6 mm 4-8 = iø 7,6 mm 6-8 = iø 9,4 mm 8-8 = iø 10,2 mm -08 = iø 11,2 mm -10 = iø 12,8 mm -12 = iø 14,3 mm -16 = iø 21,9 mm -20 = iø 25,4 mm -24 = iø 33,4 mm -32 = iø 44,5 mm -40 = iø 59,7 mm Model DM = DM-Series TF = TF-Series TrigasDM GmbH

11 3.3.2 Model numbering key Pickoff (f.e. R07C3T) R 01 C3 O Temperature Sensor T = Integrated in Pickoff 0 = without Connector C2 = MS Connector 2 Pins C3 = MS Connector 3 Pins C4 = MS Connector 4 Pins L1 = 1m cable outlet L3 = 3m cable outlet L5 = 5m cable outlet Thread 01 = 5/8-16, High Profile 02 = 5/8-16, Low Profile 03 = 5/8-16, High Profile, Explosion Proof 04 = 5/8-16, High Profile, High Temp. 06 = 11/16-24, High Profile 07 = 11/16-24, Low Profile 08 = 11/16-24, High Profile, Explosion Proof 09 = 11/16-24, High Profile, High Temp. Model R = Modulated Carrier (RF) M = Magnetic (Mag) L = Lysis SMART-RF A = Amplified (TTL) TrigasDM GmbH

12 4. Installation / commissioning 4.1 Flow meter Safety guidelines Mechanical and electrical installations must only be carried out by qualified and authorized personnel. The maximum measuring range of the flow meter must not be exceeded. The flow meter operates under pressure. Only carry out work on the flow meter when it is depressurised. If toxic, explosive or other dangerous liquids are used, they must be drained off into a safe area. The system must be completely drained and rinsed before commencing work. The metals utilised in construction are slightly porous at a microscopic level, and traces of liquids that are used during calibration may be retained. The mixture of two relatively safe fluids can potentially lead to an unstable and unpredictable reaction, even in case of trace residues, which may remain in the pores. Establish the system pressure slowly during commissioning, to avoid possible damage to the rotor from over-speeding. Flow meters which are designed for applications in liquids are not suitable for applications in gas Checks after delivery Carefully unpack the flow meter and check for cleanliness (e.g. packaging residues). Check the condition of the flow meter and look for visible damage. Check the rotor for ease of movement. TrigasDM GmbH

13 4.1.3 Operating pressure, tightening torque TF- & DM-Series max.operating pressure Max.operating pressure [bar] Model AN HS DM TF/DM TF/DM TF/DM TFDM TF/DM TF/DM TF/DM TF/DM DM DM DM-40 N/A 34 TF- & DM-Series tightening torque Tightening torque [Nm] Aluminium pipe Steel pipe Modell Min. Max. Min. Max. DM TF/DM TF/DM TF/DM TFDM TF/DM TF/DM TF/DM TF/DM DM DM TrigasDM GmbH

14 4.1.4 Installation The flow meter must be installed according to the marking that indicates the direction of flow (on the housing). Turbine flow meters function correctly in any installation position. To optimize the accuracy of flow measurement at low flow rates, the flow meter should be installed in the same position in which it was calibrated. The default installation configuration for the flowmeter during calibration is horizontal with the pickoff in vertical position, pointing up Piping Configuration Turbine flow meters can be affected by the velocity profile of the fluid being measured. Installation with proper pipe runs will reduce or completely eliminate flow profile induced measurement errors during calibration and operation. Inlet section and outlet section, schematic diagram A straight run of pipe of at least 10 times the pipe diameter in an upstream direction, and 5 times the pipe diameter in a downstream direction are recommended (see figure and table). The upstream section should be fitted with flow straightening vane. Appropriate flow straightening sets (up- and downstream) are available on request. TrigasDM GmbH

15 Inner Ø Minimum lenght for Up- & Downstream [mm] Upstream Standard Downstream Standard Upstream Flowstraightener TrigasDM Downstream Flowstraightener TrigasDM Model DM2-8 7, TF/DM4-8 7, TF/DM6-8 9, TF/DM8-8 10, TFDM-08 11, TF/DM-10 12, TF/DM-12 14, TF/DM-16 21, TF/DM-20 25, DM-24 33, DM-32 44, DM-40 59, N/A N/A Longer straight sections may be required if there are devices that significantly disturb the volume flow upstream of the installation location of the flow meter. Pumps, valves, elbows, etc. may cause strong velocity profile distortions or swirl in the pipe making the installation of flow straighteners necessary. Connecting mating pipes and fittings to the housing of the flow meter should be implemented with appropriate supports, to avoid undue strain on the flow meter. The flow meter should not be exposed to excessive vibrations, as they have a negative impact on the precision of the measurements and may cause damage to the bearing. The inner diameters of the pipe connections and the turbine must be matched. If they cannot be identical, it is preferable that the inner diameter of the pipe connection is slightly smaller than the inner diameter of the turbine rather than the other way around. Flow metering sections must be designed in such a way as to prevent the introduction of pressure surges onto the flow meter. Pressure surges can cause the instrument to display a flow rate that is too high, and in extreme cases, can damage the flow meter. At the installation location of the flow meter, pressure surges must be kept below 10% of the current flow rate. Control valves should be installed downstream of the flow meter. Opening a valve upstream of the flowmeter when the meter section is drained can result in a hard impact of the liquid striking the rotor (Water Hammer), possibly resulting in damage to the rotor. This can also have a negative effect on calibration. Installing a bypass section parallel to the flow meter makes it possible to clean the pipe when a measuring instrument is installed, or to repair or replace the flow meter without interrupting system operation. TrigasDM GmbH

16 Liquid flow meters should be installed so that liquid remains in the area of the flow meter when flow in the system is interrupted Contamination / filter All pipe sections and components in the metering line must be cleaned prior to the installation of the flow meter. Pipe Sealants, metal shavings and slag can damage the flow meter. If the cleanliness of the fluid cannot be guaranteed, a filter should be installed upstream of the flow meter, subject to the diameter of the flow meter. Model Inner Ø [mm] Filter mesh width DM2-8 7,6 10 Mikrometer TF/DM4-8 7,6 10 Mikrometer TF/DM6-8 9,4 10 Mikrometer TF/DM8-8 10,2 10 Mikrometer TFDM-08 11,2 10 Mikrometer TF/DM-10 12,8 10 Mikrometer TF/DM-12 14,3 10 Mikrometer TF/DM-16 21,9 20 Mikrometer TF/DM-20 25,4 20 Mikrometer DM-24 34,4 50 Mikrometer DM-32 44,5 50 Mikrometer DM-40 59,8 50 Mikrometer TrigasDM GmbH

17 4.1.7 Commissioning ATTENTION Increase the pressure slowly during commissioning, to avoid possible damage to the rotor from over-speeding. ATTENTION Avoid dry running! Liquid flow meters must not remain in pipes in the system that have been partially or completely emptied. This may lead to corrosion and damage to the bearings. The type of measuring fluid, the bearing type used in the flow meter, and the period during which the metering section is decommissioned and therefore dry, can reduce the service life and negatively affect the operation of the flow meter. If it is economically viable and possible in the specific operating conditions, the flow meter should be always removed from the line, cleaned and stored, if there is any doubt about the level of the liquid in the pipe during the decommissioning period. TrigasDM GmbH

18 4.2 Pickoff and amplifier CAUTION Mechanical and electrical installations must only be carried out by qualified and authorized personnel. NOTE The standard pickoff is an R01C20 with a two-pin MS connector. A wide variety of pickoffs are available, with customer-specific connectors. Please contact TrigasDM for a detailed consultation Checking the signal pick-up Measure the resistance between pin A and pin B: 1. Target value for magnetic measuring element: 2200 Ohm +/-10%, 2. Target value for modulated carrier frequency (RF) measuring elements: 10 Ohm +/-15%, 3. Resistance between each pin and housing: >1 MOhm at 500 V. If one of these values is outside the tolerance, the pickoff must be replaced Installation ATTENTION Tighten the pickoff manually without using force, to prevent the housing from being deformed. 1. Hand-tighten the Pickoff Do not use tools. 2. Tighten the lock nut securely. 3. The measuring element is removed from the housing by loosening the lock nut. TrigasDM GmbH

19 4.2.3 Connection of pickoff, amplifier, electronics The pickoff produces a relatively weak output signal. An amplifier is required to convert the signals from the measuring element into a signal that is suitable for evaluation electronics. In addition, a flow computer or similar signal receiver is required to convert the flow meter signals into a visual display on a display, or to provide control signals. TrigasDM offers a complete range of electronic devices for flow meters. Do not install measuring instruments and cables in the vicinity of strong magnetic sources, such as electrical cables, electric motors, transformers, welding equipment, relays or high-voltage cables. These sources can cause electrical noise, resulting in incorrect pulse signals. A shielded cable (preferably with braided shielding) must be used for the connections between pickoff, amplifier, electronics and display instrument. The amplifier should be installed as close as possible to the flowmeter pickoff. Pickoff cables may not be installed together with other cables (no shared cable protection). A ground cable with a cross-section of 2.5 mm² (see #14 AWG or larger diameter) between the amplifier ground and measuring element housing or the cable protection can reduce electrical noise. A ground connection with the amplifier ground can also reduce electrical noise. ATTENTION The cable shield may only be grounded in accordance with the operating manual of the electronics used Explosion protection (ATEX) Pickoffs and electronics can be supplied in explosion proof versions (ATEX) on request. With explosion proof electronics, TrigasDM turbine flow meters can be used in environments as severe as Ex-Zone 1. TrigasDM GmbH

20 4.3 Troubleshooting The following Steps for error detection or error correction can be taken if the turbine emits no signal or a faulty signal: Check the power supply of the electronics Turbine check for proper operation and true running. If necessary, clean the turbine. Check Pickoff (see Chap ): RF Pickoff: 10 Ohm ± 15% Magnetic Pickoff: 2200 Ohm ± 10% More details and values for other Pickoffs are available on demand. Check wiring. Check cable shield. 5. Maintenance The TrigasDM turbine flow meters do not require any user performed maintenance. Depending on, e.g.: Type, System design, Environmental or operating conditions, Measuring liquid and Age, these flow meters need to be periodically recalibrated and if damaged, repaired or replaced. NOTE Independent consulting and calibration as well as repair services are available through TrigasFI. TrigasFI maintains a flow calibration laboratory which is certified to the highest ISO levels and maintains traceability to German and other international standards. Calibration history is maintained for all flowmeters and which forms the basis for the determination of customer-specific and application-specific recalibration intervals. ATTENTION A flow meter is a precision instrument. Do not use compressed air to clean the flow meter or check its function. TrigasDM GmbH

21 6. Declaration of conformity TrigasDM flow meters are not subject to the WEEE directive and comply with the RoHS directive. TrigasDM flow meters comply with the valid EU directives (EU Declaration of Conformity). 7. Warranty TrigasDM GmbH (supplier) guarantees that all the equipment supplied hereunder is flawless with regard to materials and workmanship, provided that the equipment was selected in accordance with its intended purpose, installed properly and not operated incorrectly. Only the current "General Terms and Conditions" of TrigasDM apply. You can either request a copy of the terms and conditions by calling , or visit our website at for information. 8. Customer service If you should require customer service for your TrigasDM products, please contact our customer service department. All requests for information concerning a specific flowmeter must include the model and serial number of the measuring instrument. We will provide you with all possible assistance over the phone. If your equipment has to be examined or repaired at our plant, whether within the warranty period or after its expiration, our customer service department will issue an authorisation number, which is used to initiate our quick and efficient customer service processing. On receipt at our plant, your equipment will be repaired or replaced without delay, calibrated and returned to you within the shortest period possible. Please do not return any products without an authorisation number. TrigasDM GmbH Tel.: Erdinger Str. 2b Fax: info@trigasdm.com Neufahrn, Germany TrigasDM GmbH