Sierra 240-VTP, 241-VTP instruction manual Flange-Style Flow Meter Installation

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Series 24-HP Instruction Manual	Chapter 2 Installation

Flange-Style Flow Meter Installation

Caution! When using toxic or corro- sive gases, purge the line with inert gas for a mini- mum of four hours at full gas flow before installing the flow meter.

Install the flange-style meter between two conventional pipe flanges of the same nominal size as the flow meter. If the process fluid is a liquid, make sure the meter is located where the pipe is always full. This may re- quire locating the meter at a low point in the piping system. Note: Vortex flow meters are not suitable for two-phase flows (i.e., liquid and gas mix- tures). For horizontal pipelines having a process temperature above 300° F, mount the meter at a 45 or 90-degree angle to avoid overheating the electronics enclosure. To adjust the viewing angle of the enclosure or dis- play/keypad, see page 2-17.

Figure 2-4. Flange-Style Flow Meter Installation

When installing the meter make sure the flange marked “inlet” is positioned upstream of the outlet flange, facing the flow. This ensures that the sensor head is positioned downstream of the vortex shedder bar and is correctly aligned to the flow. Installing the meter opposite this direction will result in completely inaccurate flow measurement. To install the meter:

1.Turn off the flow of process gas, liquid or steam. Verify that the line is not pressurized. Confirm that the installation site meets the re- quired minimum upstream and downstream pipe diameters.

2.Seat the meter level and square on the mating connections with the flange marked “inlet” facing the flow. Position a gasket in place for each side. Make sure both gaskets are smooth and even with no gasket material ex- tending into the flow profile. Obstructions in the pipeline will disturb the flow and cause inaccurate measurements.

3.Install bolts in both process connections. Tighten the nuts in the se- quence shown in Figure 2-2. Check for leaks after tightening the flange bolts.

IM-24-HP

2-5

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Contents Models 240-VT, 240-VTP, 241-VT, 241-VTP Copyright Sierra Instruments Customer NoticeTable of Contents Troubleshooting and Repair Tables FiguresTable of Contents Introduction Using This ManualInnova-MassMulti-Parameter Vortex Mass Flow Meters Technical Assistance Receipt of System ComponentsVelocity Measurement How the Innova-Mass Vortex Mass Flow Meter OperatesVortex Frequency Sensing Vortex Shedding FrequencyGas Liquid Flow Velocity RangeReynolds Number Range for the Innova-Mass Temperature MeasurementPressure Measurement Flow Meter ConfigurationsFlow Meter Electronics Installation Overview InstallationFlow Meter Installation Requirements Unobstructed Flow Requirements Flange Bolt Specifications Series 240 In-Line Flow Meter InstallationWafer-Style Flow Meter Installation Wafer-Style Flow Meter InstallationFlange-Style Flow Meter Installation Flange-Style Flow Meter InstallationMounting Position Series 241 Insertion Flow Meter InstallationIsolation Valve Selection Cold Tap Guidelines Flow Hot Tap GuidelinesUse the Correct Insertion Formula Flow Meter InsertionExample Installing Flow Meters with a Compression ConnectionInsertion Procedure for Meters with a Compression Connection Example 1 Flange Style Meters Installing Flow Meters with a Packing Gland ConnectionExample 2 NPT Style Meters Flow Meter with Permanent Insertion Tool 10. Flow Meter with Removable Insertion Tool 11. Insertion Calculation Meters without Insertion Tool Installation Display/Keypad Adjustment All Meters Adjusting Meter Orientation13. Enclosure Viewing Adjustment Enclosure Adjustment Series 240 OnlyDC Power Wiring Wiring ConnectionsInput Power Connections AC Power Wiring16. Load Resistance Versus Input Voltage MA Output ConnectionsPulse Output Connections 20. Isolated Pulse Output with External Power Supply 23. Isolated Alarm Output with External Power Supply Alarm Output Connections25. Isolated Alarm Output Using Meter Provided Power Supply Remote Electronics WiringOptional Energy EMS Input Electronics Wiring Optional Input Electronics WiringPage Flow Meter Display/Keypad Operating InstructionsSierra Start-Up Run Mode ScreensProgramming the Flow Meter Using the Setup MenusTimeConstSec Xxxx Output MenuFirst, set the desired units of measurement Example for Setting an OutputDisplay Menu Example for Changing a Run Mode Display ItemExample for Setting an Alarm Alarms MenuTotalizer #1 Menu Example for Setting the TotalizerTotalizer #2 Menu Energy Menu For EMS Energy Meters Only ConfigurationFluid Menu Units Menu Time & Date Menu Example for Setting the TimeDiagnostics Menu Calibration Menu Password Menu Hidden Diagnostics Menus Troubleshooting and RepairColumn One Hidden Diagnostics Values IM-24-HP A2D Ref. Resistor = Factory Use Only Analog Output Calibration Troubleshooting the Flow Meter Symptom Output at no Flow Symptom No Output Symptom Meter Displays Temperature Fault Electronics Assembly Replacement All Meters Pressure Sensor Replacement Appendix a Product Specifications Appendix a Specifications Appendix a Specifications Cnpt IP66, Nema Page C D Appendix B GlossaryK L S T Page Viscosity Appendix C Fluid CalculationsCalculations for Steam T & P DensityDensity for real gases is calculated from the equation Calculations for Gas Real Gas and Other GasCalculations for Liquid Page PV AO Appendix D Hart Commands with DD MenuPV AO PV LRV URV Appendix D Hart Commands without DD MenuApplicable Flow Meter Models Appendix E Modbus CommunicationModbus Order Register Definitions Appendix E Modbus Commands Following registers contain the display units strings Control Register Definitions Examples An attempt to read registers that don’t exist 8C 3A CRC not the correct CRC EJS-02-06-07 Appendix E Modbus Commands