Sierra 780S Series Flat-Trak Instruction Manual

Series 780S Instruction Manual Table of ContentsIM-78S-B 0-1Sierra 780S Series Flat-Trak™Mass Flow MeterInstruction ManualPart Number IM-78S07/99 Revi

Chapter 1 Introduction Series 780S Instruction Manual1-4 IM-78S-BSmart Electronics FeaturesInstrument ValidationTwo simple tests offer full “field-val

Series 780S Instruction Manual Chapter 1 IntroductionIM-78S-B 1-5TotalizerWith the optional LCD display, actual mass flow appears on line 1and the tot

Chapter 1 Introduction Series 780S Instruction Manual1-6 IM-78S-B

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-1Chapter 2 InstallationInstallation OverviewThe Series 780S Flat-Trak™ is available w

Chapter 2 Installation Series 780S Instruction Manual2-2 IM-78S-BUnobstructed Flow RequirementsSelect an installation site that will minimize possible

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-3To install the flow meter:1. Turn off the flow of process gas. Verify that the line

Chapter 2 Installation Series 780S Instruction Manual2-4 IM-78S-BWiring ConnectionsFor NEMA 4X enclosures, use TB2 for power and signal connec-tions,

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-5Input Power WiringAC Power WiringThe AC power wire size must be 26 to 16 AWG with the

Chapter 2 Installation Series 780S Instruction Manual2-6 IM-78S-BDC Power WiringThe DC power wire size must be 26 to 16 AWG with the wirestripped 1/4

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-7Output Signal WiringOutput signal cable should be completely screened with a 100%shie

Table of Contents Series 780S Instruction Manual0-2 IM-78S-BCustomer Notice Sierra Instruments, Inc. is not liable for any damage or personal injury,

Chapter 2 Installation Series 780S Instruction Manual2-8 IM-78S-B4-20 mA Output WiringThe 4-20 mA current loop output can be self-powered (non-isolate

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-9R load4-20 out (+)4-20 out (–)12 VDCto36 VDCCurrent– +121516NEMA 4X Enclosu

Chapter 2 Installation Series 780S Instruction Manual2-10 IM-78S-BAlarm Output WiringTwo alarm outputs (Low Alarm and High Alarm) are included on thef

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-111234567891020191817161514131211Hazardous-Area EnclosuresLoad LoadLO ALARM (–)AC or

Chapter 2 Installation Series 780S Instruction Manual2-12 IM-78S-BVelocitysensorREDGREENORANGEWHITEBLACKTemperaturesensorRemote enclosureSensorprobeNE

Series 780S Instruction Manual Chapter 2 InstallationIM-78S-B 2-13Figure 2-22. Sensor Junction Box to Remote Enclosure ConnectionsRange Selection Wiri

Chapter 2 Installation Series 780S Instruction Manual2-14 IM-78S-B

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-1Chapter 3 OperationThis chapter covers flow meter operation, programming and instru-men

Chapter 3 Operation Series 780S Instruction Manual3-2 IM-78S-BUsing the Smart Electronics Basic FeaturesThis section covers the basic features of the

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-3LCD Display Programming MenuVersionSerial No.SierraFlow MeterCurrent flow rate Totalized

Series 780S Instruction Manual Table of ContentsIM-78S-B 0-3Table of ContentsChapter 1 IntroductionSeries 780S Flat-Trak Mass Flow Meters ...

Chapter 3 Operation Series 780S Instruction Manual3-4 IM-78S-BSingle-Digit LED Programming Menu FUNCTION AssignmentsVersionVoltage SpanVoltage ZeroHig

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-5Entering Alarm ParametersUse the High Alarm and Low Alarm function to set or adjust alar

Chapter 3 Operation Series 780S Instruction Manual3-6 IM-78S-BK-Factor AdjustmentEntering a K-factor adjusts the meter’s output signal without affect-

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-7User Full Scale AdjustmentThe user full scale (UFS) feature adjusts the flow meter outpu

Chapter 3 Operation Series 780S Instruction Manual3-8 IM-78S-BTime Response Delay AdjustmentChanging the Time Response Delay using the LCD Display1.

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-9Totalizer ResetIf your device is equipped with the optional LCD display, reset thetotali

Chapter 3 Operation Series 780S Instruction Manual3-10 IM-78S-B

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-11Using the Smart Electronics Advanced FeaturesZero and span (Function 1 through 4) can b

Chapter 3 Operation Series 780S Instruction Manual3-12 IM-78S-BNote: when adjusting zero the current signal will be driven to 4 mA andwhen adjusting s

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-13Instrument ValidationSystem electronics are verified by injecting a known input value a

Table of Contents Series 780S Instruction Manual0-4 IM-78S-BChapter 4 Troubleshooting and RepairTroubleshooting the Flow Meter...

Chapter 3 Operation Series 780S Instruction Manual3-14 IM-78S-BElectronics Validation Procedure1. Verify the flow meter is off line from any remote c

Series 780S Instruction Manual Chapter 3 OperationIM-78S-B 3-15Calibration Certificate Values Validation Test ResultsSamplePointBridgeVoltageIndicated

Chapter 3 Operation Series 780S Instruction Manual3-16 IM-78S-B4. Set the multimeter to read Ohms in the 2K range. Connect themultimeter to the termi

Series 780S Instruction Manual Chapter 4 Troubleshooting & RepairIM-78S-B 4-1Chapter 4 Troubleshooting and RepairTroubleshooting the Flow MeterBe

Chapter 4 Troubleshooting & Repair Series 780S Instruction Manual4-2 IM-78S-BProblem Possible Cause SolutionVelocity measurement iserratic or fluc

Series 780S Instruction Manual Chapter 4 Troubleshooting & RepairIM-78S-B 4-3Returning Equipment to FactoryBefore returning any mass flow meter to

Chapter 4 Troubleshooting & Repair Series 780S Instruction Manual4-4 IM-78S-B

Series 780S Instruction Manual Appendix A SpecificationsIM-78S-B A-1Appendix A Product SpecificationsPerformance SpecificationsAccuracy ± 2% of readin

Appendix A Specifications Series 780S Instruction ManualA-2 IM-78S-BLeak Integrity 1 X 10–4 atm cc/sec of helium maximumPower Requirements 18 to 30 VD

Series 780S Instruction Manual Table of ContentsIM-78S-B 0-5Warnings and CautionsWarning! Agency approval for hazardous location installations varies

Table of Contents Series 780S Instruction Manual0-6 IM-78S-B

Series 780S Instruction Manual Chapter 1 IntroductionIM-78S-B 1-1Chapter 1 IntroductionSeries 780S Flat-Trak™ Mass Flow MetersSierra’s Series 780S Fla

Chapter 1 Introduction Series 780S Instruction Manual1-2 IM-78S-BNote and Safety InformationWe use note, caution and warning statements throughout thi

Series 780S Instruction Manual Chapter 1 IntroductionIM-78S-B 1-3The Series 780S Flow Sensing PrincipleSierra’s unique Steel-Trak™ sensor probe is res