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Summary of Contents for Sierra FastFlo 620S
- Page 1 FastFlo™ 620S Instruction Manual Table of Contents FastFlo 620S ™ Insertion Mass Flow Meter Instruction Manual Part Number IM-62S Revision I, May 2022 IM-62S...
- Page 2 Sierra Instruments. The information contained in this manual is subject to change without notice.
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Page 3: Table Of Contents
FastFlo™ 620S Mass Flow Meters ...........1-1 Using this Manual..............1-1 Note and Safety Information ............1-2 Receipt of System Components ..........1-2 Technical Assistance ..............1-2 The FastFlo 620S Flow Sensing Principle .........1-3 FastFlo™ Electronics Features............1-4 Enclosure Options ................1-5 Smart Interface Software ..............1-5 Chapter 2 Installation and Wiring Installation Overview ...............2-1... - Page 4 Troubleshooting the Flow Meter ............4-1 Obtaining a Return Material Authorization .........4-3 Appendix A Product Specifications Appendix B Warranty Policy List of Figures 1-1. FastFlo 620S™ Sensor Assembly ........1-3 2-1. Recommended Pipe Length Requirements......2-2 2-2. Wiring Access ..............2-4 2-3. Input Power Connections .............2-4 2-4.
- Page 5 FastFlo™ 620S Instruction Manual Table of Contents Warnings and Cautions Warning! All wiring procedures must be performed with the power Off. Warning! To avoid potential electric shock, follow National Electric Code safety practices or your local regulations when wiring this unit to a power source and to peripheral devices. Fail- ure to do so could result in injury or death.
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Page 6: Chapter 1 Introduction
RS-232 and Sierra’s Smart Interface software or through three push buttons built into the device. Depending on the probe length, the FastFlo 620S is suitable for pipes or ducts from 1 inch up to 24 inches (DN25 up to DN600) . The FastFlo’s simple installation combines with an easy-to-use interface... -
Page 7: Note And Safety Information
If the problem persists after following the troubleshooting procedures out- lined in Chapter 4, contact Sierra Instruments by fax or by E-mail (ser- vice@sierrainstruments.com). For phone support you may call (800) 866-0200 or (831) 373-0200 between 8:00 a.m. -
Page 8: The Fastflo 620S Flow Sensing Principle
Chapter 1 Introduction The FastFlo 620S Flow Sensing Principle Sierra’s unique FastFlo 620S sensor probe is responsible for the unsur- passed accuracy and reliability of Sierra mass flow meters. The sensor consists of two sensing elements–a velocity sensor and a temperature sensor which automatically corrects for changes in gas temperature. -
Page 9: Fastflo Electronics Features
Chapter 1 Introduction FastFlo™ 620S BT Instruction Manual FastFlo Electronics Features Instrument Validation Two simple tests offer full “field-validation” of your FastFlo mass flow me- ter. The first test checks the system electronics, linearization and micro- processor functionality. This is performed by injecting a known input value and confirming that the flow meter outputs the expected value. -
Page 10: Enclosure Options
™ Smart Interface Software ™ Sierra’s Smart Interface Windows -based software is available for con- necting your PC directly to the FastFlo™. An RS-232 serial cable along with CD-ROM containing the program and system files are available from the factory. See the Smart Interface User Guide included with the software for operating instructions. -
Page 11: Installation Overview
Chapter 2 Installation Installation Overview The FastFlo 620S f low meter is f actory calibrated to the specif ic pipe size shown on the meter’s Certif icate of Calibration. The f actory calibration eliminates the task of calculating the average f low across the pipe to de- termine the correct insertion depth. -
Page 12: Unobstructed Flow Requirements
Chapter 2 Installation FastFlo™ 620S Instruction Manual Unobstructed Flow Requirements Select an installation site that will minimize possible distortion in the f low prof ile. Valves, elbows, control valves and other piping components may cause f low disturbances. Check your specif ic piping condition against the examples shown below. -
Page 13: Installation
FastFlo™ 620S Instruction Manual Chapter 2 Installation Installation Use the f ollowing data as a guide to prepare the pipe f or f low meter in- sertion. Ref er to a standard code f or all pipe tapping operations. The f ollowing instructions are general in nature and intended f or guideline purposes only. -
Page 14: Wiring Connections
Failure to PWR (+) do so could result in injury Power & signal or death. PWR (–) – Sensor Note! The FastFlo input power is a Sierra exclusive at 18 to 30 VDC. Figure 2-3. Input Power Connections IM-62S... -
Page 15: Output Signal Wiring
FastFlo™ 620S Instruction Manual Chapter 2 Installation Output Signal Wiring All f low meters are equipped with either a calibrated 0-5 VDC (0-10 VDC optional) or a calibrated 4-20 mA output signal. These linear output sig- nals represent 0-100% of the f low meter user f ull scale. DC Output Wiring The 0-5 VDC (0-10 VDC optional) signal can drive a load of 1000 Ohms. -
Page 16: Isolated 4-20 Ma Current Loop Connections
Chapter 2 Installation FastFlo™ 620S Instruction Manual Figure 2-5. Isolated 4-20 mA Current Loop Connections Jumper AUX PWR OUT R load Current 4-20 out (+) V out (–) (Common) Figure 2-6. Non-isolated 4-20 mA Current Loop Connections IM-62S... -
Page 17: Alarm Output Wiring
FastFlo™ 620S Instruction Manual Chapter 2 Installation Alarm Output Wiring Two alarm outputs (Low Alarm and High Alarm) are included on the f low meter terminal block. The alarm outputs relays are normally-open single- pole relays with one common connection. There are two connection options f or alarm outputs–the f irst with a separate power supply (isolated) and the second using the f low meter power supply (non-isolated). -
Page 18: Remote Sensor Probe Wiring
Use only f actory supplied cables when connecting the sensor probe to a remotely mounted f low meter enclosure. The electronics, sensors and interconnecting cables supplied by Sierra Instruments are calibrat- Caution! ed as a complete precision mass f low circuit. -
Page 19: Range Selection Wiring
FastFlo™ 620S Instruction Manual Chapter 2 Installation Range Selection Wiring If your meter is equipped with an optional second range calibration, con- nect a contact switch as shown below. When the switch is closed the de- vice changes to Range 2. Open the switch to return to Range 1. Range 1 RNG 2 Range 2... -
Page 20: Using The Fastflo Electronics Basic Features
FastFlo™ 620S Instruction Manual Chapter 3 Operation Chapter 3 Operation Using the FastFlo Electronics Basic Features Three push buttons allow selection and adjustment of the basic user f unc- tions. Use the push buttons to enter: alarm parameters • Caution! change the user f ull scale •... -
Page 21: Using The Single-Digit Led For Programming
Chapter 3 Operation FastFlo™ 620S Instruction Manual Flow Meter Start Up When applying power to a f low meter equipped with the optional LCD display you will see the product name, the sof tware version, unit serial number, the range number, the user f ull scale (UFS), the current f low rate and the totalized f low. -
Page 22: Using The Lcd Display For Programming
FastFlo™ 620S Instruction Manual Chapter 3 Operation Using the LCD Display for Programming Start Up Screens Sierra Flow meter model Flow Meter Sof tware v ersion Version Meter serial number Serial No. Run Mode LCD Display FUNCTIONS Current f low rate... -
Page 23: Entering Alarm Parameters
If you choose not to use the high alarm not be reporting or f or a specif ic alarm f unction, Sierra recommends that you set the high measuring gas flow alarm at 100% of the user f ull scale setting which creates an “over-range”... -
Page 24: K-Factor Adjustment
FastFlo™ 620S Instruction Manual Chapter 3 Operation K-Factor Adjustment Entering a K-f actor adjusts the meter’s output signal without af f ecting the f actory calibration curve. Use the K-f actor calibration of fset f or additional f low prof ile compensation (the f actory includes an initial f low prof ile cor- Caution! rection in the calibration curve of the unit). -
Page 25: User Full Scale Adjustment
Chapter 3 Operation FastFlo™ 620S Instruction Manual User Full Scale Adjustment The user f ull scale (UFS) f eature adjusts the f low meter output range an- ywhere within 50% to 100% of the f actory f ull scale (FFS). This f eature al- Caution! lows you to re-range the voltage or current output of the meter to accom- The flow meter must... -
Page 26: Time Response Delay Adjustment
FastFlo™ 620S Instruction Manual Chapter 3 Operation Time Response Delay Adjustment Changing the Time Response Delay with the LCD Display 1. Press FUNCTION, enter the password. Press FUNCTION until Time Response appears on the display. 2. Use the UP or DOWN button to adjust the time response delay f rom 0.10 to 7.2 seconds. -
Page 27: Voltage Zero Adjustment
Chapter 3 Operation FastFlo™ 620S Instruction Manual Using the FastFlo 620S Advanced Features Zero and span (Function 1 through 4) can be used to validate system operation and calibrate the digital to analog signals on the Boiler-Trak™. Additionally, these f unctions can compensate f or resistance in long... -
Page 28: Current Zero Adjustment
FastFlo™ 620S Instruction Manual Chapter 3 Operation Note: when adjusting zero the current signal will be driven to 4 mA and when ad- justing span the current signal will be driven to 20 mA. We recommend recording the current values bef ore making any changes to the current zero or span set- tings. -
Page 29: Instrument Validation
Chapter 3 Operation FastFlo™ 620S Instruction Manual Instrument Validation System electronics are verif ied by injecting a known input value and con- f irming that the f low meter outputs the expected value. This test con- f irms that the microprocessor, analog to digital and digital to analog con- verters, the linearizer and the display are working properly. -
Page 30: Electronics Validation Procedure
FastFlo™ 620S Instruction Manual Chapter 3 Operation Electronics Validation Procedure (Manual method) 1. Verif y the f low meter is of f line f rom any remote communications. Make sure the meter’s user f ull scale setting is the same as the f ac- tory f ull scale setting. -
Page 31: Sensor Validation Procedure
Chapter 3 Operation FastFlo™ 620S Instruction Manual Calibration Certificate Values Validation Test Results Flow Flow Sam- Bridge Indicated Output Indicated Meter Output Meter Voltage Flow (V or mA) Flow Stated (V or mA) Stated Point (LCD) Accura- Accuracy 100% Table 3-1. Electronics Validation Results Sensor Validation Procedure (Manual method) 1. -
Page 32: Sensor Validation Results
FastFlo™ 620S Instruction Manual Chapter 3 Operation 4. Set the multimeter to read Ohms in the 2K range. Connect the mul- timeter to terminals J5 and J6 (temperature sensor). Measure the resistance between J5 and J6 and record the temperature sensor re- sistance (in Ohms) in Table 3-2. -
Page 33: Chapter 4 Troubleshooting And Repair
4-3 for Return Material Authorization (RMA) and shipping in- structions. Flow Meter Calibration Sierra Instruments maintains fully equipped, quality controlled Flow Cali- bration Metrology Laboratories for re-calibration. These laboratories have ISO 9001 certification. If the flow body or electronics have been damaged or if you simply want to have the flow meter re-calibrated, con- tact the factory for shipping instructions. - Page 34 No power Turn on power to the flow meter sensor assembly Low flow cutoff too high Correct low flow cutoff programming using Sierra’s Smart Interface software Flow rate below meter’s minimum Contact factory for instructions flow rating Microprocessor locked Switch off power, wait 10 seconds,...
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Page 35: Obtaining A Return Material Authorization
Verify that your settings and ad- justments are consistent with factory recommendations. If the problem persists, Sierra is eager to help you. You may contact us at any of the following Technical Support Centers listed below. It may also help to call your Sierra Sales Agent, who is also well trained in the opera- tion of the product. - Page 36 Factory Calibration—All Models Sierra Instruments maintains a fully-equipped calibration laboratory. All meas- uring and test equipment used in the calibration of Sierra transducers are trace- able to NIST Standards. Sierra is ISO-9001 registered and conforms to the re- quirements of ANSI/NCSL-Z540 and ISO/IEC Guide 25.
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Page 37: Product Specifications
FastFlo™ 620S Instruction Manual Appendix A Specifications Appendix A Product Specifications IM-62S... - Page 38 Appendix A Specifications FastFlo™ 620S Instruction Manual IM-62S...
- Page 39 FastFlo™ 620S Instruction Manual Appendix A Specifications IM-62S...
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Page 40: Warranty Policy
Appendix B Warranty Policy LIMITED WARRANTY POLICY- REGISTER ONLINE All Sierra products are warranted to be free from defects in material and workmanship and will be repaired or replaced at no charge to Buyer, provided return or rejection of product is made within a reasonable period but no longer than one (1) year for calibration and non-calibration defects, from date of delivery.
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