Panametrics PT878GC - User Manual

Useful Tips and Hints
Cable ends are protected by a metal sheath. To remove from the PT878 - pull the sheath back. •
The[ENTER]keyallowsyoutoenterandconrmaparameter,enteramenuandenteradropdownmenu.•
The red end of the cable needs to be placed on the upstream transducer and the blue end on the downstream transducer.•
Keypad Description
The PT878 keypad has 25 function keys. The functions for each of the keys are as follows:•
3functionkeys([F1],[F2],[F3])-Enableyoutoselectthespecialfunctionswhichappearatthebottomofthescreen.•
12numerickeys(including[-]and[.])-Enableyoutoenternumericdata.•
4 arrow keys - Enable you to move through the menu options.•
[?] Help key - Enables you to acces online help•
[MENU] Menu key - Enables you to access the Main Menu•
[ENTER]-Enablesyoutoenteraparticularmenu,andentersselectedvaluesintothePT878memory.•
[SEL] - Enables you to move between data measurementson the screen.•
[ESC] - Enables you to exit menus or menu options at any time; cancels a numeric entry.•
RedKey-TurnsthepowerOnorOFF,andtogglesthebacklightOnorOff.•
Programming Transducer, Pipe and Fluid Parameters
Entering the Standard Volume / Mass Flow Parameters
The Standard Volume/Mass Flow option enables the user to correct standard volumetric
unitsfortemperatureandpressure.Italsoallowsyoutoenableordisablemassow.
3.TherstparameterallowsyoutoenableordisabletheStandardVolumeoption.
4. Use the arrow keys to scroll to correct radio button.
5.Press[ENTER]toconrmyourselection.
Note: If you select “Disabled” you cannot select any other prompts in this window.
1. Scroll to the Program Menu and press [ENTER].
6. The next option asks you to enter the base pressure. Press [ENTER] to open the text box
andusethenumerickeystotypethis.Press[ENTER]toconrmtheentry.
7. The next option asks for the atmospheric pressure. Press [ENTER] to open the text box
andusethenumerickeystotypethis.Press[ENTER]toconrmtheselection.
8.Thenalpromptinthiswindowasksforthebasetemperature.Press[ENTER]toopen
thetextboxandusethenumerickeystotypethis.Press[ENTER]toconrmtheselection.
PresstheuparrowkeytoreturntotheStandardVolumeprompt,andthenbacktotheSettingstab.
Toconrmtheentriesandreturntooperatemode,press[F3](OK).
Entering Inputs in the Standard Volume Option
2. Scroll across to the Inputs tab and press [ENTER] to open the Inputs window.
3.Scrolldowntotherstpromptwhichasksifthepressureisxedoractive.Scrolltothe
appropriateoptionandpress[ENTER]toconrmtheselection.
Note: Only select Active if you have live pressure and temperature readings being fed into
the meter.
4.Ifyouhaveselectedaxedpressure,youwillbeaskedtoenterthebasepressure.Press[ENTER]toopenthetext
boxandthenumerickeystoenterthepressurevalue.Press[ENTER]toconrmtheentry.
5.Thenextpromptwillappearwhetheryouhaveselectedanactiveorxedpressurevalue.
The desired input needs to be entered. Scroll from the Pressure text box to the Input menu
and press [ENTER] to open the drop down menu. Scroll to input A or B and press [ENTER]
toconrmtheselection.
6.Thenextpromptasksifthetemperatureisxedoractive.Scrolltothecorrectoptionand
press[ENTER]toconrmtheselection.
7.Ifyouhave selecteda xedtemperature,you willbe askedto enterthe temperature
value. Press [ENTER] to open the text box and use the numeric keys to enter the temperature
value.Press[ENTER]toconrmtheentry.
8.The nextpromtwill appearwhetheryou haveselected anactiveor xedtemperature
value. The desired input needs to be entered. Scroll from the Temperature text box to the
Input menu and press [ENTER] to open the drop down menu. Scroll to input A or B and press
[ENTER]toconrmtheselection.
Note: Ifyouhaveswitchedbothactiveinputsto#A(orto#B),thePT878GCautomaticallyswitchesoneinputtothe
other letter. This change ensures that only one analog input is assigned to one measurement type.
Entering Mass Flow Parameters
1.ToentermassowparametersintheStandardVolume/MassFlowoption,scrollacross
to the Mass Flow tab and press [ENTER] to open the window.
2.TherstpromptasksifyouwanttoenableordisabletheMassFlowoption.Scrolltothe
appropriateoptionandpress[ENTER]toconrmtheselection.
3. If you have selected “Enable” Mass Flow the following prompt will appear asking for the
calculatedmethod.Threeoptionsareavailable:staticdensity,saturatedsteamandsteam.
Press [ENTER] to open the drop-down menu. Scroll to the appropriate method for your
applicationandpress[ENTER]toconrmtheentry.
- If you select Saturated Steam: The prompt asks for the Saturated Steam input. Press
[ENTER]toopenthetextbox,entertheappropriatevalue,andpress[ENTER]to conrm
the entry.
- If you select Static Density: The prompt asks for the Static Density value. Press [ENTER] to
openthetextbox,entertheappropriatevalue,andpress[ENTER]toconrmtheentry.
1.Toenterstandardvolumeinputs,returntothesettingstabatthetopoftheStandard
Volume window.
Note: Ifyouselect“Disabled”,youcannotselectanyotherpromptinthiswindow.
2. Scroll down to the Std Vol / Mass Flow button and press [ENTER].
BeforethePT878canbegintakingmeasurementstheuserneedstoenterthetransducer,
pipeanduidparametersbyfollowingthesesteps:
1. Press the [MENU] key and scroll across to the Program Menu tab using the arrow keys.
Press[ENTER]to enterthe menu,and then[ENTER] againtoenterthe TransducerMenu
(seepiconright).
2. Work through the transducer options selecting the appropriate options from the drop
downmenus,ormanuallytype inthecorrect selection(ifa boxisgreyedout youdonot
need to enter a selection for this parameter). Wedge temperature is typically half way
between the pipe and air temperatures.
3.Once youhave completedthe transducertab, scrollto thetop ofthe pageand press
the right arrow to highlight the Pipe Menu tab. Press [ENTER] to open the Pipe Menu. Work
through the options as in step 2.
6. The meter shoulddisplay thefollowing warningmessage: “WARNING:TRANSDUCER
SPACINGHASCHANGED”.Thisisthespacebywhichyouwillneedtosetthetransducers
apart by.
4.Repeatstep3onthethreeremainingtabs,Fluid,LiningandPath.
5.Oncecompletepress[F3]toconrmyourchoicesandreturntothemainscreen.
Error Messages and Testing the Cables and Transducers
AwayoftestingthatthecablesandtransducersareworkingistoconnectthemalluptothePT878GCandputthetransducertoyourear.Listen
out for a frequent buzzing sound. If you do not hear this there is a problem with either the cables or transducers.
Make sure the transducers are spaced properly.
Error messages - error code messages are displayed when the PT878 is displaying measurements. For meanings of error messages and a full list
ofsolutions,pleaserefertotheDiagnosisandTroubleshootingsectionoftheGEPanametricsOperationandInstallationGuide.
E0-Errormessageisdisplayedbrieyafteranothererrormessage.Noactionisneededinthiscase.
E1-Themeterhasapoorultrasonicsignalstrength.Thiscouldbedowntobrokencables,brokentransducers,owcell  
problems or electronic failure.
E2 - Soundspeed error. This could be caused by incorrect programming and spacing of the transducers.
E3-Velocityrangeerror.Causedbyincorrectprogramming,incorrectspacingoftransducersorpoorowconditions.
E4-Signalqualityproblem.Iftoolowitisaowcellorelectricalproblem.Iftoohighitiselectronicfailure.Possiblychangetocorrelatemode
under signal setup
E5-Amplitudeerror.Thereareexcessivebubblesorparticlesintheuid.
PressingtheupkeyreturnsthemetertotheMassFlowprompt,andthentotheMassFlow
tab.
ToconrmtheentriesandreturntoOperatemode,press[F3](OK).
Panametrics PT878GC Ultrasonic Flowmeter
Quick Start Guide
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Panametrics PT878GC Specifications