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SUPMEA SUP-LDG User Manual

Electromagnetic flow/btu meter
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Headquarters
5th floor,Building 4,Singapore Hangzhou Science Technology Park,No. 6 street,
Hangzhou Economic Development Area,Hangzhou 310018,China
Singapore
2 Venture Drive #11-30 Vision Exchange Singapore
info@supmea.com
www.supmea.com
Supmea Automation Co.,Ltd.
User Manual
Electromagnetic flow/BTU meter
U-LDG/LDGC/LDGR-SUP-EN4

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  • Page 1 User Manual Electromagnetic flow/BTU meter Headquarters 5th floor,Building 4,Singapore Hangzhou Science Technology Park,No. 6 street, Hangzhou Economic Development Area,Hangzhou 310018,China Singapore 2 Venture Drive #11-30 Vision Exchange Singapore info@supmea.com www.supmea.com U-LDG/LDGC/LDGR-SUP-EN4 Supmea Automation Co.,Ltd.
  • Page 2 Preface Thank you for purchasing electromagnetic flow meter. Please read this manual carefully before operating and using it correctly to avoid unnecessary losses caused by false operation. Note Modification of this manual’s contents will not be notified as a result of some ...

  • Page 3: Table Of Contents

    Contents Chapter 1 Safety instructions ...................1 1.1. Manufacturer's safety Instructions ...............1 1.2. Safety instructions for operators ..............3 1.3. Warranty & After-sales Service ..............3 Chapter 2 Introduction ..................... 4 2.1. Scope of delivery ..................4 2.2. Measuring principle ..................6 2.3. Mechanical Construction ................8 2.4.
  • Page 4 Chapter 5 Start up ....................35 5.1. Power on ....................35 5.2. Converter start up ..................35 Chapter 6 Operation ....................36 6.1. Display and operating elements ..............36 6.2. Display (operation mode) ................38 6.3. Display button operation instructions ............39 6.4.

  • Page 6: Chapter 1 Safety Instructions

    For every purchase of products, they are applicable to product documentation and manufacturer's sale terms. As for document contents including this disclaimer, the manufacturer reserves and has the right to modify at any time in any way for any reason without any notice in www.supmea.com...
  • Page 7 This symbol signifies related and important safety tips. Warning! Such warnings must be paid attention to. Slight negligence may lead to serious health threat, and may damage the equipment itself or the operating factory facilities. Note! Such warnings must be paid attention to. Any slight negligence www.supmea.com...

  • Page 8: Safety Instructions For Operators

    We promise to deal with the customer's technical questions within 2 hours.  For the instruments returned to the factory for maintenance, we promise to  issue the test results within 3 working days and the maintenance results within 7 working days after receiving them www.supmea.com...

  • Page 9: Chapter 2 Introduction

    Otherwise, please contact manufacturer or supplier. (1) Remote type flowmeter Figure 1 Remote type flowmeter signal converter Remote type electromagnetic flowmeter sensor Signal cable User manual www.supmea.com...
  • Page 10 Chapter 2 Introduction (2) Compact type flowmeter (DN65, refer to type selection manual for specific parameters) Figure 2 Compact type electromagnetic flowmeter User manual www.supmea.com...

  • Page 11: Measuring Principle

    When measuring the flow, the fluid flows through a magnetic field which is perpendicular to the flow direction. The flow of conductive fluid induces a potential proportional to the average flow velocity, thus requiring the conductivity of the measured flowing liquid to be higher than the minimum conductivity (5us/cm). www.supmea.com...
  • Page 12 ρ： Density of water flowing through the BTU meter, kg/m3; ：Volume flow of water flowing through the BTU meter, m3/h; ∆h： The enthalpy difference of water at the inlet and outlet temperatures of the heat τ：Time，h。 exchange system, J/kg; Figure 4 www.supmea.com...

  • Page 13: Mechanical Construction

    It is also equipped with 1-2 grounding electrodes for grounding and anti-interference of flow signal measurement. (5) Measuring tube: The measured medium flows through the measuring tube. www.supmea.com...

  • Page 14: Application Introduction

    30μS/cm.Meanwhile,the conductivity measured online must prevail, for that measured offline may be relatively higher due to carbon dioxide and nitrogen dioxide contained in the air may dissolve into the medium. www.supmea.com...

  • Page 15: Wiring Introduction

    Ground ALM1，ALM2: Relay out POUT，PCOM: Pulse/Frequency output 485A，485B: RS485 communication IOUT，ICOM: 4-20mA output TIA, TIB, TIC, TID: Water supply temperature (Pt1000) TOA, TOB, TOC, TOD: Return water temperature (Pt1000) EXT1，EXT2: Excitation signal SIG1，SIG2，SGND: Electrode signal DS1，DS2: Electrode shield www.supmea.com -10-...
  • Page 16 4-20mA output connection POUT，PCOM: Pulse/Frequency/Relay out THA, THB, THC, THD: Water supply temperature (Pt1000) TCA, TCB, TCC, TCD: Return water temperature (Pt1000) CCOM: RS485 communication ground Converter instrument grounding protection (Note: the left terminal is the BTU meter terminal) www.supmea.com -11-...

  • Page 17: Notice

    Note: The left terminal is the BTU meter terminal User Inside device of the (Level converter input) Figure 9 Recommendation: The pull-up resistor R in the figure is recommended to use a 2K, 0.5W resistor, and the power supply E is recommended to use 24V DC. www.supmea.com -12-...

  • Page 18: Nameplate

    Instead, you need to check whether the parameters indicated on the nameplate are correctly preset against with the actual working conditions. The following are parameters on the nameplate. Figure 10 Warning: it is strictly prohibited to open the housing, without first switching off the power supply. www.supmea.com -13-...

  • Page 19: Chapter 3 Installation

    (1) Leave enough space on the side. (2) Do not make the electromagnetic flowmeter subject to violent vibration. 3.4. Pipe design (1) Location The electromagnetic flowmeter shall be installed in a dry and ventilated place. Places that could be flooded should be avoided. www.supmea.com -14-...
  • Page 20 10 times of pipe diameters (10D), and the length of straight pipe on the downstream be at least 5 times of pipe diameters (5D) www.supmea.com -15-...
  • Page 21 When the electromagnetic flowmeter is required to be installed underground, the pipes at both inlet and outlet ends shall be provided with support items, and a metal protection plate shall be installed above the flowmeter. ≥10D ≥5D Figure 11 ≥5D ≥ Figure 12 www.supmea.com -16-...

  • Page 22: Installation Conditions

    Otherwise, this would cause converter signals opened and zero drift due to the fact that deposits are not covered by the electrode. www.supmea.com -17-...
  • Page 23 In addition, impurities will not precipitate at the bottom of the measuring tube. It shall be guaranteed that liquids flow from bottom to top to ensure that the sensor measuring tube is always filled with medium. www.supmea.com -18-...
  • Page 24 (6) For pipes with open discharges, the electromagnetic flowmeter shall be installed at the bottom section (lower part of the pipe). Figure 18 (7) For places where fall head of pipes is over 5 m, the air valve shall be installed on the downstream of the electromagnetic flowmeter. www.supmea.com -19-...
  • Page 25 It’s not allowed to install the electromagnetic flowmeter at a place where the liquid conductivity is extremely uneven. Injection of chemicals from the upstream of the meter can easily result in uneven liquid conductivity, which can cause serious www.supmea.com -20-...

  • Page 26: Mechanical Installation

    It’s prohibited to use a stick or rope to lead through the measuring tube of sensor. Instead, follow the correct lifting as shown in the figure below. www.supmea.com -21-...
  • Page 27 B. Conduct regular inspection. Check against the measures mentioned above and the terminal box for at least once a year. In the event of water entry into the meter (eg, after heavy rain, etc.), the meter shall be inspected www.supmea.com -22-...
  • Page 28 When the flowmeter is installed, the inner diameter of sealing washers shall be slightly larger than that of the pipe to aviod interference to the fluids in the pipe. Flange Nut Seal washer Bolt Figure 22 www.supmea.com -23-...

  • Page 29: Btu Meter Installation Requirements

    (there are three ways to insert the temperature sensor as shown in the figure below: 1 represents the temperature sensor sheath, 2 represents the pipeline opening, 3 represents the pipeline section, and 4 represents the temperature sensor probe) www.supmea.com -24-...
  • Page 30 The situation should be explained to the manufacturer when ordering. Do not increase or decrease the lead length of the temperature sensor at will; (9) After the installation of the heat meter is completed, seal each connection, especially where the sensor is inserted into the pipe. www.supmea.com -25-...

  • Page 31: Dimensions For Electromagnetic Flowmeter

    8*18 8*18 8*23 12*23 12*25 12*23 1029 16*23 16*25 20*25 20*25 1 MPa 20*30 1052 24*30 1164 1015 950 24*33 1264 1115 1050 28*33 1000 1000 1374 1230 1160 28*36 1200 1200 1589 1405 1340 32*33 0.6 MPa www.supmea.com -26-...

  • Page 32: Converter Dimensions

    Chapter 3 Installation 3.8. Converter dimensions Unit:mm Figure 27 Compact type Figure 28 Remote type Table 2 Dimension[mm] Weight[Kg] 214.5 233.5 69.7 45.7 www.supmea.com -27-...

  • Page 33: Chapter 4 Electrical Connection

    The equipment must be grounded in accordance with regulations so as to protect the operator from electrical shock. Danger! In case that equipment is used in explosion danger areas, special notes are given to explosion-proof instructions for safety tips. www.supmea.com -28-...

  • Page 34: Potential Equalization

    SIG2--The negative electrode sensor signal SGND--Signal ground 4.3. Potential Equalization Danger! No potential difference is allowed between the measuring sensor and casing or protective earth of converter. The electromagnetic flowmeter must be grounded separately during operation. If it is grounded with www.supmea.com -29-...

  • Page 35: Power Supply

    The equipment must be grounded in accordance with regulations so as to protect the operator from electrical shock. (1) 220VAC power supply Figure 30 Tips! Allowable range: 85VAC -245VAC，50Hz-60Hz L: AC live line N: AC neutral line : Connect ground wire to the ground screw www.supmea.com -30-...

  • Page 36: Input Termination

    The meter can only be installed, used, or operated by trained and authorized persons. This document will help you to establish favorable operating conditions so as to make sure that you use the equipment in a safe and effective way. www.supmea.com -31-...

  • Page 37: Output Termination

    The meter can only be installed, used, or operated by trained and authorized persons. This document will help you to establish favorable operating conditions so as to make sure that you use the equipment in a safe and effective way. www.supmea.com -32-...
  • Page 38 Pulse output: POUT, PCOM Relay out :ALM1,ALM2 Active mode: High 24V, 5mAdrive current Output electrical isolation: photoelectric isolation, isolation voltage: > 1000VDC Scale Frequency output: Frequency 2KHz (configurable 0-5 kHz), corresponding to the upper limit of the flow range www.supmea.com -33-...
  • Page 39 Additional remarks: pulse output is OC gate output, it needs external power supply. The general counters are equipped with pull-up resistors, and the signal can be directly connected therein. Manufacturer's suggestion: use a pull-up resistor R of 2K, 0.5W, and 24V DC power supply for power supply www.supmea.com -34-...

  • Page 40: Chapter 5 Start Up

    After energization, the instrument will perform self-check for one time. Then it will immediately begin to measure and display the current values. Figure 35 electromagnetic flow meter startup interface Figure 36 BTU meter startup interface www.supmea.com -35-...

  • Page 41: Chapter 6 Operation

    (5) Instantaneous unit of heat/cold; (6) Heat related parameters; (7) Mechanical keys/touch keys. Heat-related parameters can be switched between each other by pressing the button The heat screen can be switched to the flow screen by pressing the button . www.supmea.com -36-...
  • Page 42 Measuring Mark Menu mode Function mode Data mode mode Switch menu Data right > categories shift Switch Switch menu Confirm accumulative Confirmation subclass data ↲ amount Change ↑ ↓ Selection data > + ↲ Enter menu Exit menu www.supmea.com -37-...

  • Page 43: Display (Operation Mode)

    Except key combination, it is forbidden to put other fingers on the other photoelectric keys when operating the touch-key. Photoelectric keys are optional, please see type selection manual for details. Figure 39 www.supmea.com -38-...

  • Page 44: Display Button Operation Instructions

    Key parameters to facilitate the manufacturer and user to quickly set up the meter: Press on at the same time to enter the parameter setting interface. Enter the password. Quickly set the password: 300000（Used to modify the quick setup menu） www.supmea.com -39-...

  • Page 45: Configuration Details

    Used to calculate the mass flow, Q =ρV . When the flow unit is volume, this parameter are not displayed. Density unit: g/cm Time Figure User 0-99S constant Damping coefficient of the filter, select the average selected within the www.supmea.com -40-...
  • Page 46 The peak amplitude (not shown when peak inhibition allows configuration closing ) Peak inhibition Option User 0-3s time The peak amplitude (not shown when peak inhibition allows configuration closing ) Flow 1-10 Option Manufacturer Y, N correction www.supmea.com -41-...
  • Page 47 At the interval of the modified point 4 ＞ The original flow velocity ≥ The modified flow velocity = Correction factor 4× The original flow velocity Note: when set the modified point, shall keep the following relationship www.supmea.com -42-...
  • Page 48 Flow rate modified point 3, when The flow rate function is disabled, this parameter does not display. Flow correction Figure Manufacturer 0.0-99.999 1.000 coefficient 3 1-16 Flow rate modified point 3, when The flow rate function is disabled, this parameter does not display. Flow 1-17 Figure Manufacturer 0.0-99.999 correction www.supmea.com -43-...
  • Page 49 Frequency type pulse, alarm Frequency ,pulse equivalent/alarm output optional Transistor High/low Option User High level state level Select the level state of no frequency output, no pulse equivalent output, no alarm output Max. Figure User 0-5000 2000 frequency www.supmea.com -44-...
  • Page 50 5- Alarm contacts (3-0 set to show the configuration at alarm output ) Password Parameter Type Option Default level range Alarm High/Low transistor Option User High level lever state Touch spot outputs high and low level under no alarm state . Alarm1 output Option User www.supmea.com -45-...
  • Page 51 Max. flow Figure User 0-999.9% 100% value alarm Set the upper limit alarm value and range percentage. Min. flow Figure User 0-999.9% value alarm Set the lower limit alarm value and range percentage. Alarm Figure User 0-99.9% www.supmea.com -46-...
  • Page 52 38400、 57600 Baud rate of serial communication of physical layer Even-odd NONE/ODD/ Option User NONE check EVEN Serial communication verification mode of physical layer 2-1 4-3 、 3-4 Byte swap Option User 1-2、4-3 1-2、 2-1 4-3 1-2 3-4 www.supmea.com -47-...
  • Page 53 Measured conductivity equivalent value when the tube is empty, default values can be used for general natural water. It needs to observe whether the empty pipe for special fluid is that displayed as 9-1, then record it in 9-3. empty pipe Figure Manufacturer 0-9999 check min www.supmea.com -48-...
  • Page 54 For details, see sensor coefficient calibration section Cali Figure Manufacturer coefficient 10-5 Ex-factory unification calibration coefficient of converter Zero Figure Manufacturer 0-99.999 correction 10-6 For correcting the sensor’s nonlinear correction for small flow (below 0.3 www.supmea.com -49-...
  • Page 55 The heat unit is synchronized with the total unit. Please be careful to modify this parameter in normal use. Temperature 0~99 Option User damping time (s) 20-2 Temperature filter damping coefficient, which sets the time constant used to smooth the temperature display. www.supmea.com -50-...
  • Page 56 When the measurement medium is selected as other medium, this parameter displays 1000.0 density(kg/m3) 100~9999.99 Option User 21-3 Sets the density value of the heat calculation for other media When the measurement medium is selected as other medium, this www.supmea.com -51-...
  • Page 57 Set the fractional part of the total heat Cooling Total Number 0~999999999 User Integer 22-3 Set the integer part of the total cooling capacity Cooling Total Number 0.0~0.999 User Decimals 22-4 Set the fractional part of the total cooling capacity www.supmea.com -52-...

  • Page 58: Brief Operating Instruction And Function

    Users can conduct the switch operation in the menu by pressing and button, switch among the parameter item of menu by pressing the button and meanwhile store a modified parameter value. Adjust the parameter value by pressing button. Such as flow upper limit. www.supmea.com -53-...
  • Page 59 Chapter 6 Operation Figure 41 www.supmea.com -54-...
  • Page 60 Chapter 6 Operation 6.6.2. Display measurement ∑+: Forward cummulant ，∑-: Reverse cummulant, Σ:Net cummulant, V: Current This picture will display after startup flow velocity，MT: Conductivity equivalent Figure 42 www.supmea.com -55-...
  • Page 61 Chapter 6 Operation 6.6.3. Flow setup and analog output menu Figure 43 www.supmea.com -56-...
  • Page 62 Chapter 6 Operation 6.6.4. Pulse output and total set menu Figure 44 6.6.5. Relay out setup menu Figure 45 www.supmea.com -57-...
  • Page 63 Chapter 6 Operation 6.6.6. System function, empty pipe function, sensor function, test function setup menu Figure 46 www.supmea.com -58-...

  • Page 64: Chapter 7 Display Functions

    Sensor signal is greater than the AD sampling of the upper limit AD_Hi The current real-time flow rate exceeds the setting flow limit The current real-time flow rate exceeds systemAD sampling limit Rng_Hi The range scope set by user exceeds the upper limit of pulse output. Pls_Hi www.supmea.com -59-...
  • Page 65 Chapter 7 Display Functions 7.2 Report Operation Instructions The user can use key switch between the heat screen, the flow screen and the cumulative report screen with the keys. www.supmea.com -60-...
  • Page 66 Cumulative report query On the cumulative report screen, use keys to switch between report query status, report type switching status, and cumulative data unit switching status In the report query state, use keys to switch the report list www.supmea.com -61-...
  • Page 67 Chapter 7 Display Functions In the report type switching state, use the keys to switch the reportdata type. www.supmea.com -62-...
  • Page 68 Chapter 7 Display Functions In the accumulated data unit switching state, use the keys to switch the accumulated data unit. Cumulative report configuration Menu 23-0, set parameter Y to clear cumulative report www.supmea.com -63-...

  • Page 69: Pulse/Frequency/Current Output

    Counter instrument should be used when measuring pulse output. Frequency meter instrument shouldn’t be used. 7.2.2. Frequency Output It is mainly used for manufacturer coefficient calibration and user measurement use. In the third group configuration parameters setting: frequency corresponds to www.supmea.com -64-...

  • Page 70: Communication

    Read Holding Registers command. 7.3.1. Registered Address Communication data and register address are in the following table. Table 10 Parameter Type Address Explanation Real-time flow rate float Real-time flow velocity float Flow percentage float 50 stands for 50% Electric conductivity float www.supmea.com -65-...
  • Page 71 1,000 times 123 stands decimal for 0.123 float Instantaneous heat float Input temperature float Output temperature Heat accumulation ulong integer The decimal part Heat accumulation ulong magnifies by 1,000 times decimal 123 stands for 0.123 www.supmea.com -66-...
  • Page 72 00 00 40 80 7.3.3. Readout Real-time Quantity Floating-point Communications Example: Real-time floating point number reading Send message: 08 04 00 63 00 02 81 4C Return message: 08 04 04 22 6E 41 3F 79 61(Real-time flow：11.95) www.supmea.com -67-...
  • Page 73 Last three bits: the physical signal type Byte8 Equipment logo Byte9-11 Device ID number Minimum number of leading codes for the response Byte12 (slave->primary) Byte13 Maximum number of device variables Byte14-15 Configuration modification count Additional device status (maintenance Byte16 required/parameter alarms) www.supmea.com -68-...
  • Page 74 Quaternary variable value HART Command 6: POLLING Address This is the data link layer management command. This command writes the Polling address to the device, which is used to control the primary variable AO output and provide the device identification. www.supmea.com -69-...
  • Page 75 (Span) unit code, primary variable sensor upper limit, primary variable sensor lower limit, and sensor minimum accuracy. The sensor upper and lower limit/minimum accuracy (Span) units are the same as those of the primary variable. Table 15 Request Response Byte0-2 Primary variable sensor serial number www.supmea.com -70-...
  • Page 76 Command 34: Primary Variable Damping Value This is a command about the primary variable. The primary variable damping value represents a time constant (the output to the step response should be 63% of the steady state value when that time is up). Both www.supmea.com -71-...
  • Page 77 The device is configured into fixed primary variable current mode, and the response value shows the actual current value of the current device. If the request value is set to "0", the fixed current mode will be exited, as well as when the device is powered off. www.supmea.com -72-...
  • Page 78 If the device is not in the correct loop current mode or the current is not set to the exact minimum value, response code 9 - Incorrect Current Mode or Value - is returned. Table 21 Request Byte0-3 External measured current value, unit: mA. Response Byte0-3 Actual measured primary variable current value, unit: www.supmea.com -73-...
  • Page 79 The loop current command allows the host to impose a loop current value on the field device and perform a two-point adjustment of the field device loop current www.supmea.com -74-...
  • Page 80 20 mA. 4.Through command 46, adjust the loop current gain. 5.If you need to set it more accurately, repeat steps 1-4. When the loop current is well calibrated, exit the fixed current mode (set 0 mA) by command 40. www.supmea.com -75-...

  • Page 81: Chapter 8 Technical Parameters

    Not deeper than 3 meters (only for remote type sensors with IP68 protection) Sensor cable Suitable only for remote type instruments. The standard cable length is 10 m; flowmeters can be equipped with a cable of optional length up to 100 m. www.supmea.com -76-...
  • Page 82 -10 ℃ ~ 55 ℃ for Converter of Remote-Type Flowmeter -40 ℃ ~ 65 ℃ Storage Electric Conductivity Table 29 Water Min. 20μS/cm (Actual electric conductivity should be greater than 50μS/cm) Other Min. 5μS/cm (Actual electric conductivity should be greater than 50μS/cm) -77- www.supmea.com...
  • Page 83 5000 cp/s Setting 0.001L ~ 1m Fmax ≤ 5000Hz Frequency Setting 0-5000Hz Passive ≤ 36VDC Outer ≤ 24VDC Internal Active I≤ 4.52 mA Status output Function Output as alarm Passive ≤ 36VDC Outer ≤ 24VDC External Active I≤ 4.52mA www.supmea.com -78-...

  • Page 84: Electrode Selection And Specification

    Applicable: most acids, such as concentrated hydrochloric acid, boiling point, nitric acid and sulfuric acid below 175 ℃ . nitric acid and sulfuric acid, including hydrochloric acid with Not applicable: alkalis, hydrofluoric acid, sulfur trioxide. Applicable: various acids (excluding aqua regia), alkalis and salts. www.supmea.com -79-...
  • Page 85 So this table is only for reference. Users may make their ownchoices based on actual situation. You may refer to corrosion prevention manual for general media. But for media with complex compositions like mixed acid, you may need to conduct corrosion tests for materials to be selected. www.supmea.com -80-...

  • Page 86: Flowmeter

    2500-5429 57.3-500 600-2500 3000-6871 70.7-600 800-3000 4000-8482 102-800 1000-4000 5000-12216 139-1200 1600-5000 6000-16620 181-1600 2000-6000 8000-21720 229-1600 2000-8000 10000-27480 1000 283-2000 2500-10000 12000-33924 1200 407-2500 3000-12000 16000-48833 Reduction formula: (Flow )Q = (flow velocity) V×π×(DN/2) ,Unit: m/s and www.supmea.com -81-...

  • Page 87: Flow And Velocity Parallel Table For Electromagnetic Flowmeter

    DN800 229.0 1145 2290 22902 27480 34350 DN900 1131 1414 2827 28274 33924 42405 DN1000 1628 2034.7 4069.4 40694 48832.8 61041 DN1200 1108 2216 2769.5 5539.4 55390 66468 83085 DN1400 1447 2894 3617.3 7234.6 72346 86815.2 108519 DN1600 www.supmea.com -82-...

  • Page 88: Accuracy

    Chapter 8 Technical parameters 8.5. Accuracy Reference condition (1) Medium: water (2) Temperature: 20℃ (3) Pressure: 0.1MPa (4) Front straight conduit: ≥10DN, Rear straight conduit: ≥5DN Figure 48 X[m/s]: Flow rate Y[%]: Actual measured value deviation（mV） www.supmea.com -83-...

  • Page 89: Chapter 9 Plug-In Type Electromagnetic Flowmeter Series

    1 ~ 5kHz frequency output at the same time. Because the flowmeter ( sensor ) has the above-mentioned advantages, it has been widely used in industrial sections such as chemical industry, chemical fiber, metallurgy, chemical fertilizer, paper making, water supply and drainage, www.supmea.com -84-...

  • Page 90: Product Form And Composition

    50m (special length can be customized) (11) Flowmeter output signal: ( 4~20 ) mA, load resistance is 0~750Ω Frequency: 1~5kHz (12) Connection method: flanged ball valve connection, threaded (screw) ball valve connection. (13) 15D upstream and 10D downstream of the straight pipe section. www.supmea.com -85-...

  • Page 91: Structure

    Except for the electrode tip or the inner wall of the measuring tube, the other parts are insulated from the fluid to be measured. Excitation system: The excitation system is used to generate a working magnetic www.supmea.com -86-...

  • Page 92: Installation And Use

    The ambient temperature should not change much. (3) The installation environment should be convenient for installation and maintenance. Choice of installation location (1) The installation position must ensure that the pipeline is always filled with the fluid to be measured. www.supmea.com -87-...
  • Page 93 1.6Mpa pressure without leakage. 9.5.5. Sensor installation (1) Clean the welding slag and burrs on the mounting base of the tube under test. (2) Turn off the upstream flow control valve or use low pressure water supply. www.supmea.com -88-...
  • Page 94 When the pipeline to be tested is a non-metallic pipeline, in order to ensure good grounding, the grounding terminal of the sensor www.supmea.com -89-...

  • Page 95: Maintenance, Repair And Common Troubleshooting

    (measuring tube) adhere and scale, it must be cleaned regularly. The cleaning cycle depends on the rate of adhesion and fouling. When cleaning the electrode and the measuring head (measuring tube), be careful www.supmea.com -90-...
  • Page 96 Cleaning electrode much Deposits on the electrodes The output signal The sensor enters the water Replace the sensor gradually drifts Electrodes are covered cleaning electrode towards zero www.supmea.com -91-...

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