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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 L, November 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
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 ................ - Page 4 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 Interf ace sof tware or through three push buttons built into the device. Depending on the probe length, the FastFlo 620S is suitable f or pipes or ducts f rom 1 inch up to 24 inches (DN25 up to DN600) . The FastFlo’s simple installation combines with an easy-to-use interf ace... -
Page 7: Note And Safety Information
If the problem persists af ter f ollowing the troubleshooting procedures out- lined in Chapter 4, contact Sierra Instruments by f ax 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 f or the unsur- passed accuracy and reliability of Sierra mass f low meters. The sensor consists of two sensing elements–a velocity sensor and a temperature sensor which automatically corrects f or changes in gas temperature. -
Page 9: Fastflo Electronics Features
Chapter 1 Introduction FastFlo™ 620S Instruction Manual FastFlo Electronics Features Instrument Validation Two simple tests of f er f ull “f ield-validation” of your FastFlo mass f low me- ter. The f irst test checks the system electronics, linearization and micro- processor f unctionality. -
Page 10: Enclosure Options
Software Smart Interface ™ Sierra’s Smart Interf ace Windows ™ -based sof tware is available f or con- necting your PC directly to the FastFlo™. An RS-232 serial cable along with CD-ROM containing the program and system f iles are available f rom the f actory. -
Page 11: Installation Overview
Chapter 2 Installation Installation Overview The FastFlo 620S flow meter is factory calibrated to the specific pipe size shown on the meter’s Certificate of Calibration. The factory calibration eliminates the task of calculating the average flow 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 flow profile. Valves, elbows, control valves and other piping components may cause flow disturbances. Check your specific piping condition against the examples shown below. -
Page 13: Installation
FastFlo™ 620S Instruction Manual Chapter 2 Installation Installation Use the following data as a guide to prepare the pipe for flow meter in- sertion. Refer to a standard code for all pipe tapping operations. The following instructions are general in nature and intended for 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 flow 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 flow meter user full 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 flow meter terminal block. The alarm outputs relays are normally-open single- pole relays with one common connection. There are two connection options for alarm outputs–the first with a separate power supply (isolated) and the second using the flow meter power supply (non-isolated). -
Page 18: Remote Sensor Probe Wiring
Remote Sensor Probe Wiring Use only factory supplied cables when connecting the sensor probe to a remotely mounted flow meter enclosure. The electronics, sensors and interconnecting cables supplied by Sierra Instruments are calibrat- Caution! ed as a complete precision mass flow 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 func- tions. Use the push buttons to enter: alarm parameters • Caution! • change the user full scale Before making any ad- adjust the K-factor... -
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 flow meter equipped with the optional LCD display you will see the product name, the software version, unit serial number, the range number, the user full scale (UFS), the current flow rate and the totalized flow. -
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 for a specific alarm function, Sierra recommends that you set the high measuring gas flow alarm at 100% of the user full 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-factor adjusts the meter’s output signal without affecting the factory calibration curve. Use the K-factor calibration offset for additional flow profile compensation (the factory includes an initial flow profile 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 full scale (UFS) feature adjusts the flow meter output range an- ywhere within 50% to 100% of the factory full scale (FFS). This feature al- Caution! lows you to re-range the voltage or current output of the meter to accom- The flow meter must modate different flow rates. -
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 from 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 functions can compensate for resistance... -
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 before 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 verified by injecting a known input value and con- firming that the flow meter outputs the expected value. This test con- firms 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. Verify the flow meter is off line from any remote communications. Make sure the meter’s user full scale setting is the same as the fac- tory full scale setting. If not, adjust the user full scale value as need- Caution! Before beginning this 2. -
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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